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3970 vulnerabilities found for Thunderbird by Mozilla
CVE-2026-8975 (GCVE-0-2026-8975)
Vulnerability from nvd – Published: 2026-05-19 12:30 – Updated: 2026-07-15 02:47
VLAI
EPSS
VEX
Title
Memory safety bugs fixed in Firefox ESR 115.36, Firefox ESR 140.11 and Firefox 151
Summary
Memory safety bugs present in Firefox ESR 115.35, Firefox ESR 140.10 and Firefox 150. Some of these bugs showed evidence of memory corruption and we presume that with enough effort some of these could have been exploited to run arbitrary code. This vulnerability was fixed in Firefox 151, Firefox ESR 115.36, Firefox ESR 140.11, Thunderbird 151, and Thunderbird 140.11.
Severity
8.8 (High)
7.5 (High)
SSVC
Exploitation: none
Automatable: no
Technical Impact: total
CISA Coordinator (v2.0.3)
CWE
Assigner
References
30 references
Impacted products
19 products
| Vendor | Product | Version | |
|---|---|---|---|
| Mozilla | Firefox |
Unaffected:
115.36 , ≤ 115.*
(rpm)
Unaffected: 140.11 , ≤ 140.* (rpm) Unaffected: 151 , ≤ * (rpm) |
|
| Mozilla | Thunderbird |
Unaffected:
140.11 , ≤ 140.*
(rpm)
Unaffected: 151 , ≤ * (rpm) |
|
| Red Hat | Red Hat Enterprise Linux 10 |
Unaffected:
0:140.11.0-1.el10_2 , < *
(rpm)
cpe:/o:redhat:enterprise_linux:10.2 |
|
| Red Hat | Red Hat Enterprise Linux 10.0 Extended Update Support |
Unaffected:
0:140.11.0-1.el10_0 , < *
(rpm)
cpe:/o:redhat:enterprise_linux_eus:10.0 |
|
| Red Hat | Red Hat Enterprise Linux 7 Extended Lifecycle Support |
Unaffected:
0:140.11.0-1.el7_9 , < *
(rpm)
cpe:/o:redhat:rhel_els:7 |
|
| Red Hat | Red Hat Enterprise Linux 8 |
Unaffected:
0:140.11.0-1.el8_10 , < *
(rpm)
cpe:/a:redhat:enterprise_linux:8 |
|
| Red Hat | Red Hat Enterprise Linux 8.4 Advanced Mission Critical Update Support |
Unaffected:
0:140.11.0-1.el8_4 , < *
(rpm)
cpe:/a:redhat:rhel_aus:8.4 |
|
| Red Hat | Red Hat Enterprise Linux 8.4 Extended Update Support Long-Life Add-On |
Unaffected:
0:140.11.0-1.el8_4 , < *
(rpm)
cpe:/a:redhat:rhel_eus_long_life:8.4 |
|
| Red Hat | Red Hat Enterprise Linux 8.6 Advanced Mission Critical Update Support |
Unaffected:
0:140.11.0-1.el8_6 , < *
(rpm)
cpe:/a:redhat:rhel_aus:8.6 |
|
| Red Hat | Red Hat Enterprise Linux 8.6 Extended Update Support Long-Life Add-On |
Unaffected:
0:140.11.0-1.el8_6 , < *
(rpm)
cpe:/a:redhat:rhel_eus_long_life:8.6 |
|
| Red Hat | Red Hat Enterprise Linux 8.8 Telecommunications Update Service |
Unaffected:
0:140.11.0-1.el8_8 , < *
(rpm)
cpe:/a:redhat:rhel_tus:8.8 |
|
| Red Hat | Red Hat Enterprise Linux 8.8 Update Services for SAP Solutions |
Unaffected:
0:140.11.0-1.el8_8 , < *
(rpm)
cpe:/a:redhat:rhel_e4s:8.8 |
|
| Red Hat | Red Hat Enterprise Linux 9 |
Unaffected:
0:140.11.0-1.el9_8 , < *
(rpm)
cpe:/a:redhat:enterprise_linux:9 |
|
| Red Hat | Red Hat Enterprise Linux 9.2 Update Services for SAP Solutions |
Unaffected:
0:140.11.0-1.el9_2 , < *
(rpm)
cpe:/a:redhat:rhel_e4s:9.2 |
|
| Red Hat | Red Hat Enterprise Linux 9.4 Update Services for SAP Solutions |
Unaffected:
0:140.11.0-1.el9_4 , < *
(rpm)
cpe:/a:redhat:rhel_e4s:9.4 |
|
| Red Hat | Red Hat Enterprise Linux 9.6 Extended Update Support |
Unaffected:
0:140.11.0-1.el9_6 , < *
(rpm)
cpe:/a:redhat:rhel_eus:9.6 |
|
| Red Hat | Red Hat Enterprise Linux 10 |
cpe:/o:redhat:enterprise_linux:10 |
|
| Red Hat | Red Hat Enterprise Linux 6 |
cpe:/o:redhat:enterprise_linux:6 |
|
| Red Hat | Red Hat Enterprise Linux 7 |
cpe:/o:redhat:enterprise_linux:7 |
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CVE-2026-8974 (GCVE-0-2026-8974)
Vulnerability from nvd – Published: 2026-05-19 12:30 – Updated: 2026-05-26 17:47
VLAI
EPSS
VEX
Title
Memory safety bugs fixed in Firefox ESR 140.11 and Firefox 151
Summary
Memory safety bugs present in Firefox ESR 140.10 and Firefox 150. Some of these bugs showed evidence of memory corruption and we presume that with enough effort some of these could have been exploited to run arbitrary code. This vulnerability was fixed in Firefox 151, Firefox ESR 140.11, Thunderbird 151, and Thunderbird 140.11.
Severity
8.8 (High)
SSVC
Exploitation: none
Automatable: no
Technical Impact: total
CISA Coordinator (v2.0.3)
CWE
- CWE-119 - Improper Restriction of Operations within the Bounds of a Memory Buffer
Assigner
References
Impacted products
2 products
| Vendor | Product | Version | |
|---|---|---|---|
| Mozilla | Firefox |
Unaffected:
140.11 , ≤ 140.*
(rpm)
Unaffected: 151 , ≤ * (rpm) |
|
| Mozilla | Thunderbird |
Unaffected:
140.11 , ≤ 140.*
(rpm)
Unaffected: 151 , ≤ * (rpm) |
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CVE-2026-8973 (GCVE-0-2026-8973)
Vulnerability from nvd – Published: 2026-05-19 12:30 – Updated: 2026-07-15 00:38
VLAI
EPSS
VEX
Title
Memory safety bugs fixed in Firefox 151
Summary
Memory safety bugs present in Firefox 150. Some of these bugs showed evidence of memory corruption and we presume that with enough effort some of these could have been exploited to run arbitrary code. This vulnerability was fixed in Firefox 151 and Thunderbird 151.
Severity
8.8 (High)
7.5 (High)
SSVC
Exploitation: none
Automatable: no
Technical Impact: total
CISA Coordinator (v2.0.3)
CWE
Assigner
References
6 references
| URL | Tags |
|---|---|
| https://bugzilla.mozilla.org/buglist.cgi?bug_id=1… | |
| https://www.mozilla.org/security/advisories/mfsa2… | |
| https://www.mozilla.org/security/advisories/mfsa2… | |
| https://access.redhat.com/security/cve/CVE-2026-8973 | vdb-entryx_refsource_REDHAT |
| https://bugzilla.redhat.com/show_bug.cgi?id=2479864 | issue-trackingx_refsource_REDHAT |
| https://security.access.redhat.com/data/csaf/v2/v… | x_sadp-csaf-vex |
Impacted products
7 products
| Vendor | Product | Version | |
|---|---|---|---|
| Mozilla | Firefox |
Unaffected:
151 , ≤ *
(rpm)
|
|
| Mozilla | Thunderbird |
Unaffected:
151 , ≤ *
(rpm)
|
|
| Red Hat | Red Hat Enterprise Linux 10 |
cpe:/o:redhat:enterprise_linux:10 |
|
| Red Hat | Red Hat Enterprise Linux 6 |
cpe:/o:redhat:enterprise_linux:6 |
|
| Red Hat | Red Hat Enterprise Linux 7 |
cpe:/o:redhat:enterprise_linux:7 |
|
| Red Hat | Red Hat Enterprise Linux 8 |
cpe:/o:redhat:enterprise_linux:8 |
|
| Red Hat | Red Hat Enterprise Linux 9 |
cpe:/o:redhat:enterprise_linux:9 |
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CVE-2026-8972 (GCVE-0-2026-8972)
Vulnerability from nvd – Published: 2026-05-19 12:30 – Updated: 2026-05-20 15:38
VLAI
EPSS
VEX
Title
Privilege escalation in the WebRTC: Audio/Video component
Summary
Privilege escalation in the WebRTC: Audio/Video component. This vulnerability was fixed in Firefox 151 and Thunderbird 151.
Severity
8.8 (High)
SSVC
Exploitation: none
Automatable: no
Technical Impact: total
CISA Coordinator (v2.0.3)
CWE
- CWE-269 - Improper Privilege Management
Assigner
References
Impacted products
2 products
| Vendor | Product | Version | |
|---|---|---|---|
| Mozilla | Firefox |
Unaffected:
151 , ≤ *
(rpm)
|
|
| Mozilla | Thunderbird |
Unaffected:
151 , ≤ *
(rpm)
|
Credits
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CVE-2026-8971 (GCVE-0-2026-8971)
Vulnerability from nvd – Published: 2026-05-19 12:30 – Updated: 2026-05-19 17:10
VLAI
EPSS
VEX
Title
Same-origin policy bypass in the Networking: JAR component
Summary
Same-origin policy bypass in the Networking: JAR component. This vulnerability was fixed in Firefox 151 and Thunderbird 151.
Severity
6.5 (Medium)
SSVC
Exploitation: none
Automatable: yes
Technical Impact: partial
CISA Coordinator (v2.0.3)
CWE
- CWE-346 - Origin Validation Error
Assigner
References
Impacted products
2 products
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|---|---|---|---|
| Mozilla | Firefox |
Unaffected:
151 , ≤ *
(rpm)
|
|
| Mozilla | Thunderbird |
Unaffected:
151 , ≤ *
(rpm)
|
Credits
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CVE-2026-8970 (GCVE-0-2026-8970)
Vulnerability from nvd – Published: 2026-05-19 12:30 – Updated: 2026-05-20 15:38
VLAI
EPSS
VEX
Title
Privilege escalation in the Security component
Summary
Privilege escalation in the Security component. This vulnerability was fixed in Firefox 151, Firefox ESR 140.11, Thunderbird 151, and Thunderbird 140.11.
Severity
8.8 (High)
SSVC
Exploitation: none
Automatable: no
Technical Impact: total
CISA Coordinator (v2.0.3)
CWE
- CWE-269 - Improper Privilege Management
Assigner
References
Impacted products
2 products
| Vendor | Product | Version | |
|---|---|---|---|
| Mozilla | Firefox |
Unaffected:
140.11 , ≤ 140.*
(rpm)
Unaffected: 151 , ≤ * (rpm) |
|
| Mozilla | Thunderbird |
Unaffected:
140.11 , ≤ 140.*
(rpm)
Unaffected: 151 , ≤ * (rpm) |
Credits
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CVE-2026-8969 (GCVE-0-2026-8969)
Vulnerability from nvd – Published: 2026-05-19 12:30 – Updated: 2026-05-19 17:10
VLAI
EPSS
VEX
Title
Mitigation bypass in the DOM: Security component
Summary
Mitigation bypass in the DOM: Security component. This vulnerability was fixed in Firefox 151 and Thunderbird 151.
Severity
8.1 (High)
SSVC
Exploitation: none
Automatable: no
Technical Impact: total
CISA Coordinator (v2.0.3)
CWE
- CWE-693 - Protection Mechanism Failure
Assigner
References
Impacted products
2 products
| Vendor | Product | Version | |
|---|---|---|---|
| Mozilla | Firefox |
Unaffected:
151 , ≤ *
(rpm)
|
|
| Mozilla | Thunderbird |
Unaffected:
151 , ≤ *
(rpm)
|
Credits
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CVE-2026-8968 (GCVE-0-2026-8968)
Vulnerability from nvd – Published: 2026-05-19 12:30 – Updated: 2026-05-19 17:10
VLAI
EPSS
VEX
Title
Denial-of-service due to invalid pointer in the Audio/Video: Web Codecs component
Summary
Denial-of-service due to invalid pointer in the Audio/Video: Web Codecs component. This vulnerability was fixed in Firefox 151, Firefox ESR 140.11, Thunderbird 151, and Thunderbird 140.11.
Severity
7.5 (High)
SSVC
Exploitation: none
Automatable: yes
Technical Impact: partial
CISA Coordinator (v2.0.3)
CWE
- CWE-400 - Uncontrolled Resource Consumption
Assigner
References
Impacted products
2 products
| Vendor | Product | Version | |
|---|---|---|---|
| Mozilla | Firefox |
Unaffected:
140.11 , ≤ 140.*
(rpm)
Unaffected: 151 , ≤ * (rpm) |
|
| Mozilla | Thunderbird |
Unaffected:
140.11 , ≤ 140.*
(rpm)
Unaffected: 151 , ≤ * (rpm) |
Credits
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CVE-2026-8967 (GCVE-0-2026-8967)
Vulnerability from nvd – Published: 2026-05-19 12:30 – Updated: 2026-05-20 15:46
VLAI
EPSS
VEX
Title
Information disclosure in the Graphics: WebGPU component
Summary
Information disclosure in the Graphics: WebGPU component. This vulnerability was fixed in Firefox 151 and Thunderbird 151.
Severity
7.5 (High)
SSVC
Exploitation: none
Automatable: yes
Technical Impact: partial
CISA Coordinator (v2.0.3)
CWE
- CWE-200 - Exposure of Sensitive Information to an Unauthorized Actor
Assigner
References
Impacted products
2 products
| Vendor | Product | Version | |
|---|---|---|---|
| Mozilla | Firefox |
Unaffected:
151 , ≤ *
(rpm)
|
|
| Mozilla | Thunderbird |
Unaffected:
151 , ≤ *
(rpm)
|
Credits
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CVE-2026-8966 (GCVE-0-2026-8966)
Vulnerability from nvd – Published: 2026-05-19 12:30 – Updated: 2026-05-20 15:46
VLAI
EPSS
VEX
Title
Information disclosure in the IP Protection component
Summary
Information disclosure in the IP Protection component. This vulnerability was fixed in Firefox 151 and Thunderbird 151.
Severity
7.5 (High)
SSVC
Exploitation: none
Automatable: yes
Technical Impact: partial
CISA Coordinator (v2.0.3)
CWE
- CWE-200 - Exposure of Sensitive Information to an Unauthorized Actor
Assigner
References
Impacted products
2 products
| Vendor | Product | Version | |
|---|---|---|---|
| Mozilla | Firefox |
Unaffected:
151 , ≤ *
(rpm)
|
|
| Mozilla | Thunderbird |
Unaffected:
151 , ≤ *
(rpm)
|
Credits
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CVE-2026-8965 (GCVE-0-2026-8965)
Vulnerability from nvd – Published: 2026-05-19 12:30 – Updated: 2026-05-20 15:46
VLAI
EPSS
VEX
Title
Information disclosure in the DOM: Security component
Summary
Information disclosure in the DOM: Security component. This vulnerability was fixed in Firefox 151 and Thunderbird 151.
Severity
7.5 (High)
SSVC
Exploitation: none
Automatable: yes
Technical Impact: partial
CISA Coordinator (v2.0.3)
CWE
- CWE-200 - Exposure of Sensitive Information to an Unauthorized Actor
Assigner
References
Impacted products
2 products
| Vendor | Product | Version | |
|---|---|---|---|
| Mozilla | Firefox |
Unaffected:
151 , ≤ *
(rpm)
|
|
| Mozilla | Thunderbird |
Unaffected:
151 , ≤ *
(rpm)
|
Credits
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CVE-2026-8964 (GCVE-0-2026-8964)
Vulnerability from nvd – Published: 2026-05-19 12:30 – Updated: 2026-05-19 17:10
VLAI
EPSS
VEX
Title
Spoofing issue in the Popup Blocker component
Summary
Spoofing issue in the Popup Blocker component. This vulnerability was fixed in Firefox 151 and Thunderbird 151.
Severity
7.5 (High)
SSVC
Exploitation: none
Automatable: yes
Technical Impact: partial
CISA Coordinator (v2.0.3)
CWE
- CWE-451 - User Interface (UI) Misrepresentation of Critical Information
Assigner
References
Impacted products
2 products
| Vendor | Product | Version | |
|---|---|---|---|
| Mozilla | Firefox |
Unaffected:
151 , ≤ *
(rpm)
|
|
| Mozilla | Thunderbird |
Unaffected:
151 , ≤ *
(rpm)
|
Credits
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CVE-2026-8963 (GCVE-0-2026-8963)
Vulnerability from nvd – Published: 2026-05-19 12:30 – Updated: 2026-05-19 17:10
VLAI
EPSS
VEX
Title
Spoofing issue in the Web Speech component
Summary
Spoofing issue in the Web Speech component. This vulnerability was fixed in Firefox 151 and Thunderbird 151.
Severity
7.5 (High)
SSVC
Exploitation: none
Automatable: yes
Technical Impact: partial
CISA Coordinator (v2.0.3)
CWE
- CWE-290 - Authentication Bypass by Spoofing
Assigner
References
Impacted products
2 products
| Vendor | Product | Version | |
|---|---|---|---|
| Mozilla | Firefox |
Unaffected:
151 , ≤ *
(rpm)
|
|
| Mozilla | Thunderbird |
Unaffected:
151 , ≤ *
(rpm)
|
Credits
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CVE-2026-8962 (GCVE-0-2026-8962)
Vulnerability from nvd – Published: 2026-05-19 12:29 – Updated: 2026-05-20 15:46
VLAI
EPSS
VEX
Title
Mitigation bypass in the DOM: Security component
Summary
Mitigation bypass in the DOM: Security component. This vulnerability was fixed in Firefox 151, Firefox ESR 140.11, Thunderbird 151, and Thunderbird 140.11.
Severity
8.1 (High)
SSVC
Exploitation: none
Automatable: no
Technical Impact: total
CISA Coordinator (v2.0.3)
CWE
- CWE-693 - Protection Mechanism Failure
Assigner
References
Impacted products
2 products
| Vendor | Product | Version | |
|---|---|---|---|
| Mozilla | Firefox |
Unaffected:
140.11 , ≤ 140.*
(rpm)
Unaffected: 151 , ≤ * (rpm) |
|
| Mozilla | Thunderbird |
Unaffected:
140.11 , ≤ 140.*
(rpm)
Unaffected: 151 , ≤ * (rpm) |
Credits
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CVE-2026-8961 (GCVE-0-2026-8961)
Vulnerability from nvd – Published: 2026-05-19 12:29 – Updated: 2026-05-20 15:46
VLAI
EPSS
VEX
Title
Spoofing issue in the Form Autofill component
Summary
Spoofing issue in the Form Autofill component. This vulnerability was fixed in Firefox 151, Firefox ESR 140.11, Thunderbird 151, and Thunderbird 140.11.
Severity
6.5 (Medium)
SSVC
Exploitation: none
Automatable: no
Technical Impact: partial
CISA Coordinator (v2.0.3)
CWE
- CWE-290 - Authentication Bypass by Spoofing
Assigner
References
Impacted products
2 products
| Vendor | Product | Version | |
|---|---|---|---|
| Mozilla | Firefox |
Unaffected:
140.11 , ≤ 140.*
(rpm)
Unaffected: 151 , ≤ * (rpm) |
|
| Mozilla | Thunderbird |
Unaffected:
140.11 , ≤ 140.*
(rpm)
Unaffected: 151 , ≤ * (rpm) |
Credits
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CVE-2026-8960 (GCVE-0-2026-8960)
Vulnerability from nvd – Published: 2026-05-19 12:29 – Updated: 2026-05-19 17:10
VLAI
EPSS
VEX
Title
Spoofing issue in WebExtensions
Summary
Spoofing issue in WebExtensions. This vulnerability was fixed in Firefox 151 and Thunderbird 151.
Severity
7.5 (High)
SSVC
Exploitation: none
Automatable: yes
Technical Impact: partial
CISA Coordinator (v2.0.3)
CWE
- CWE-290 - Authentication Bypass by Spoofing
Assigner
References
Impacted products
2 products
| Vendor | Product | Version | |
|---|---|---|---|
| Mozilla | Firefox |
Unaffected:
151 , ≤ *
(rpm)
|
|
| Mozilla | Thunderbird |
Unaffected:
151 , ≤ *
(rpm)
|
Credits
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CVE-2026-8959 (GCVE-0-2026-8959)
Vulnerability from nvd – Published: 2026-05-19 12:29 – Updated: 2026-05-19 17:10
VLAI
EPSS
VEX
Title
Sandbox escape due to incorrect boundary conditions in the Widget: Win32 component
Summary
Sandbox escape due to incorrect boundary conditions in the Widget: Win32 component. This vulnerability was fixed in Firefox 151, Firefox ESR 140.11, Thunderbird 151, and Thunderbird 140.11.
Severity
9.6 (Critical)
SSVC
Exploitation: none
Automatable: no
Technical Impact: total
CISA Coordinator (v2.0.3)
CWE
Assigner
References
Impacted products
2 products
| Vendor | Product | Version | |
|---|---|---|---|
| Mozilla | Firefox |
Unaffected:
140.11 , ≤ 140.*
(rpm)
Unaffected: 151 , ≤ * (rpm) |
|
| Mozilla | Thunderbird |
Unaffected:
140.11 , ≤ 140.*
(rpm)
Unaffected: 151 , ≤ * (rpm) |
Credits
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}
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"value": "Sandbox escape due to incorrect boundary conditions in the Widget: Win32 component. This vulnerability was fixed in Firefox 151, Firefox ESR 140.11, Thunderbird 151, and Thunderbird 140.11."
}
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CVE-2026-8958 (GCVE-0-2026-8958)
Vulnerability from nvd – Published: 2026-05-19 12:29 – Updated: 2026-05-19 17:10
VLAI
EPSS
VEX
Title
Information disclosure, sandbox escape in the Security: Process Sandboxing component
Summary
Information disclosure, sandbox escape in the Security: Process Sandboxing component. This vulnerability was fixed in Firefox 151, Firefox ESR 140.11, Thunderbird 151, and Thunderbird 140.11.
Severity
8.6 (High)
SSVC
Exploitation: none
Automatable: yes
Technical Impact: partial
CISA Coordinator (v2.0.3)
Assigner
References
Impacted products
2 products
| Vendor | Product | Version | |
|---|---|---|---|
| Mozilla | Firefox |
Unaffected:
140.11 , ≤ 140.*
(rpm)
Unaffected: 151 , ≤ * (rpm) |
|
| Mozilla | Thunderbird |
Unaffected:
140.11 , ≤ 140.*
(rpm)
Unaffected: 151 , ≤ * (rpm) |
Credits
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CVE-2026-8957 (GCVE-0-2026-8957)
Vulnerability from nvd – Published: 2026-05-19 12:29 – Updated: 2026-05-20 15:37
VLAI
EPSS
VEX
Title
Privilege escalation in the Enterprise Policies component
Summary
Privilege escalation in the Enterprise Policies component. This vulnerability was fixed in Firefox 151, Firefox ESR 140.11, Thunderbird 151, and Thunderbird 140.11.
Severity
8.8 (High)
SSVC
Exploitation: none
Automatable: no
Technical Impact: total
CISA Coordinator (v2.0.3)
CWE
- CWE-269 - Improper Privilege Management
Assigner
References
Impacted products
2 products
| Vendor | Product | Version | |
|---|---|---|---|
| Mozilla | Firefox |
Unaffected:
140.11 , ≤ 140.*
(rpm)
Unaffected: 151 , ≤ * (rpm) |
|
| Mozilla | Thunderbird |
Unaffected:
140.11 , ≤ 140.*
(rpm)
Unaffected: 151 , ≤ * (rpm) |
Credits
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CVE-2026-8956 (GCVE-0-2026-8956)
Vulnerability from nvd – Published: 2026-05-19 12:29 – Updated: 2026-05-19 17:10
VLAI
EPSS
VEX
Title
Integer overflow in the Networking: JAR component
Summary
Integer overflow in the Networking: JAR component. This vulnerability was fixed in Firefox 151, Firefox ESR 140.11, Thunderbird 151, and Thunderbird 140.11.
Severity
9.8 (Critical)
SSVC
Exploitation: none
Automatable: yes
Technical Impact: total
CISA Coordinator (v2.0.3)
CWE
- CWE-190 - Integer Overflow or Wraparound
Assigner
References
Impacted products
2 products
| Vendor | Product | Version | |
|---|---|---|---|
| Mozilla | Firefox |
Unaffected:
140.11 , ≤ 140.*
(rpm)
Unaffected: 151 , ≤ * (rpm) |
|
| Mozilla | Thunderbird |
Unaffected:
140.11 , ≤ 140.*
(rpm)
Unaffected: 151 , ≤ * (rpm) |
Credits
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CVE-2026-8955 (GCVE-0-2026-8955)
Vulnerability from nvd – Published: 2026-05-19 12:29 – Updated: 2026-05-20 15:37
VLAI
EPSS
VEX
Title
Privilege escalation in the DOM: Workers component
Summary
Privilege escalation in the DOM: Workers component. This vulnerability was fixed in Firefox 151, Firefox ESR 140.11, Thunderbird 151, and Thunderbird 140.11.
Severity
8.8 (High)
SSVC
Exploitation: none
Automatable: no
Technical Impact: total
CISA Coordinator (v2.0.3)
CWE
- CWE-269 - Improper Privilege Management
Assigner
References
Impacted products
2 products
| Vendor | Product | Version | |
|---|---|---|---|
| Mozilla | Firefox |
Unaffected:
140.11 , ≤ 140.*
(rpm)
Unaffected: 151 , ≤ * (rpm) |
|
| Mozilla | Thunderbird |
Unaffected:
140.11 , ≤ 140.*
(rpm)
Unaffected: 151 , ≤ * (rpm) |
Credits
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"vendor": "Mozilla",
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"vendor": "Mozilla",
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CVE-2026-8954 (GCVE-0-2026-8954)
Vulnerability from nvd – Published: 2026-05-19 12:29 – Updated: 2026-05-19 17:10
VLAI
EPSS
VEX
Title
Incorrect boundary conditions, integer overflow in the Audio/Video component
Summary
Incorrect boundary conditions, integer overflow in the Audio/Video component. This vulnerability was fixed in Firefox 151, Firefox ESR 140.11, Thunderbird 151, and Thunderbird 140.11.
Severity
7.5 (High)
SSVC
Exploitation: none
Automatable: yes
Technical Impact: partial
CISA Coordinator (v2.0.3)
CWE
- CWE-119 - Improper Restriction of Operations within the Bounds of a Memory Buffer
Assigner
References
Impacted products
2 products
| Vendor | Product | Version | |
|---|---|---|---|
| Mozilla | Firefox |
Unaffected:
140.11 , ≤ 140.*
(rpm)
Unaffected: 151 , ≤ * (rpm) |
|
| Mozilla | Thunderbird |
Unaffected:
140.11 , ≤ 140.*
(rpm)
Unaffected: 151 , ≤ * (rpm) |
Credits
{
"containers": {
"adp": [
{
"metrics": [
{
"cvssV3_1": {
"attackComplexity": "LOW",
"attackVector": "NETWORK",
"availabilityImpact": "NONE",
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"baseSeverity": "HIGH",
"confidentialityImpact": "HIGH",
"integrityImpact": "NONE",
"privilegesRequired": "NONE",
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CVE-2026-8953 (GCVE-0-2026-8953)
Vulnerability from nvd – Published: 2026-05-19 12:29 – Updated: 2026-05-19 17:10
VLAI
EPSS
VEX
Title
Sandbox escape due to use-after-free in the Disability Access APIs component
Summary
Sandbox escape due to use-after-free in the Disability Access APIs component. This vulnerability was fixed in Firefox 151, Firefox ESR 115.36, Firefox ESR 140.11, Thunderbird 151, and Thunderbird 140.11.
Severity
9.6 (Critical)
SSVC
Exploitation: none
Automatable: no
Technical Impact: total
CISA Coordinator (v2.0.3)
CWE
- CWE-416 - Use After Free
Assigner
References
6 references
Impacted products
2 products
| Vendor | Product | Version | |
|---|---|---|---|
| Mozilla | Firefox |
Unaffected:
115.36 , ≤ 115.*
(rpm)
Unaffected: 140.11 , ≤ 140.* (rpm) Unaffected: 151 , ≤ * (rpm) |
|
| Mozilla | Thunderbird |
Unaffected:
140.11 , ≤ 140.*
(rpm)
Unaffected: 151 , ≤ * (rpm) |
Credits
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CVE-2026-8952 (GCVE-0-2026-8952)
Vulnerability from nvd – Published: 2026-05-19 12:29 – Updated: 2026-05-20 15:37
VLAI
EPSS
VEX
Title
Privilege escalation in the Application Update component
Summary
Privilege escalation in the Application Update component. This vulnerability was fixed in Firefox 151 and Thunderbird 151.
Severity
8.8 (High)
SSVC
Exploitation: none
Automatable: no
Technical Impact: total
CISA Coordinator (v2.0.3)
CWE
- CWE-269 - Improper Privilege Management
Assigner
References
Impacted products
2 products
| Vendor | Product | Version | |
|---|---|---|---|
| Mozilla | Firefox |
Unaffected:
151 , ≤ *
(rpm)
|
|
| Mozilla | Thunderbird |
Unaffected:
151 , ≤ *
(rpm)
|
Credits
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CVE-2026-8950 (GCVE-0-2026-8950)
Vulnerability from nvd – Published: 2026-05-19 12:29 – Updated: 2026-05-19 17:10
VLAI
EPSS
VEX
Title
Same-origin policy bypass in the Networking: HTTP component
Summary
Same-origin policy bypass in the Networking: HTTP component. This vulnerability was fixed in Firefox 151, Firefox ESR 140.11, Thunderbird 151, and Thunderbird 140.11.
Severity
9.3 (Critical)
SSVC
Exploitation: none
Automatable: no
Technical Impact: partial
CISA Coordinator (v2.0.3)
CWE
- CWE-346 - Origin Validation Error
Assigner
References
Impacted products
2 products
| Vendor | Product | Version | |
|---|---|---|---|
| Mozilla | Firefox |
Unaffected:
140.11 , ≤ 140.*
(rpm)
Unaffected: 151 , ≤ * (rpm) |
|
| Mozilla | Thunderbird |
Unaffected:
140.11 , ≤ 140.*
(rpm)
Unaffected: 151 , ≤ * (rpm) |
Credits
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CVE-2026-8949 (GCVE-0-2026-8949)
Vulnerability from nvd – Published: 2026-05-19 12:29 – Updated: 2026-05-19 17:10
VLAI
EPSS
VEX
Title
Integer overflow in the Widget: Win32 component
Summary
Integer overflow in the Widget: Win32 component. This vulnerability was fixed in Firefox 151, Firefox ESR 140.11, Thunderbird 151, and Thunderbird 140.11.
Severity
7.5 (High)
SSVC
Exploitation: none
Automatable: yes
Technical Impact: partial
CISA Coordinator (v2.0.3)
CWE
- CWE-190 - Integer Overflow or Wraparound
Assigner
References
Impacted products
2 products
| Vendor | Product | Version | |
|---|---|---|---|
| Mozilla | Firefox |
Unaffected:
140.11 , ≤ 140.*
(rpm)
Unaffected: 151 , ≤ * (rpm) |
|
| Mozilla | Thunderbird |
Unaffected:
140.11 , ≤ 140.*
(rpm)
Unaffected: 151 , ≤ * (rpm) |
Credits
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CVE-2026-8948 (GCVE-0-2026-8948)
Vulnerability from nvd – Published: 2026-05-19 12:29 – Updated: 2026-07-15 02:48
VLAI
EPSS
VEX
Title
Same-origin policy bypass in the DOM: Networking component
Summary
Same-origin policy bypass in the DOM: Networking component. This vulnerability was fixed in Firefox 151 and Thunderbird 151.
Severity
9.1 (Critical)
7.5 (High)
SSVC
Exploitation: none
Automatable: yes
Technical Impact: total
CISA Coordinator (v2.0.3)
CWE
Assigner
References
6 references
| URL | Tags |
|---|---|
| https://bugzilla.mozilla.org/show_bug.cgi?id=2038803 | |
| https://www.mozilla.org/security/advisories/mfsa2… | |
| https://www.mozilla.org/security/advisories/mfsa2… | |
| https://access.redhat.com/security/cve/CVE-2026-8948 | vdb-entryx_refsource_REDHAT |
| https://bugzilla.redhat.com/show_bug.cgi?id=2479850 | issue-trackingx_refsource_REDHAT |
| https://security.access.redhat.com/data/csaf/v2/v… | x_sadp-csaf-vex |
Impacted products
7 products
| Vendor | Product | Version | |
|---|---|---|---|
| Mozilla | Firefox |
Unaffected:
151 , ≤ *
(rpm)
|
|
| Mozilla | Thunderbird |
Unaffected:
151 , ≤ *
(rpm)
|
|
| Red Hat | Red Hat Enterprise Linux 10 |
cpe:/o:redhat:enterprise_linux:10 |
|
| Red Hat | Red Hat Enterprise Linux 6 |
cpe:/o:redhat:enterprise_linux:6 |
|
| Red Hat | Red Hat Enterprise Linux 7 |
cpe:/o:redhat:enterprise_linux:7 |
|
| Red Hat | Red Hat Enterprise Linux 8 |
cpe:/o:redhat:enterprise_linux:8 |
|
| Red Hat | Red Hat Enterprise Linux 9 |
cpe:/o:redhat:enterprise_linux:9 |
Credits
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CVE-2026-8947 (GCVE-0-2026-8947)
Vulnerability from nvd – Published: 2026-05-19 12:29 – Updated: 2026-07-15 02:48
VLAI
EPSS
VEX
Title
Use-after-free in the DOM: Bindings (WebIDL) component
Summary
Use-after-free in the DOM: Bindings (WebIDL) component. This vulnerability was fixed in Firefox 151, Firefox ESR 115.36, Firefox ESR 140.11, Thunderbird 151, and Thunderbird 140.11.
Severity
7.3 (High)
7.5 (High)
SSVC
Exploitation: none
Automatable: yes
Technical Impact: partial
CISA Coordinator (v2.0.3)
Assigner
References
30 references
Impacted products
19 products
| Vendor | Product | Version | |
|---|---|---|---|
| Mozilla | Firefox |
Unaffected:
115.36 , ≤ 115.*
(rpm)
Unaffected: 140.11 , ≤ 140.* (rpm) Unaffected: 151 , ≤ * (rpm) |
|
| Mozilla | Thunderbird |
Unaffected:
140.11 , ≤ 140.*
(rpm)
Unaffected: 151 , ≤ * (rpm) |
|
| Red Hat | Red Hat Enterprise Linux 10 |
Unaffected:
0:140.11.0-1.el10_2 , < *
(rpm)
cpe:/o:redhat:enterprise_linux:10.2 |
|
| Red Hat | Red Hat Enterprise Linux 10.0 Extended Update Support |
Unaffected:
0:140.11.0-1.el10_0 , < *
(rpm)
cpe:/o:redhat:enterprise_linux_eus:10.0 |
|
| Red Hat | Red Hat Enterprise Linux 7 Extended Lifecycle Support |
Unaffected:
0:140.11.0-1.el7_9 , < *
(rpm)
cpe:/o:redhat:rhel_els:7 |
|
| Red Hat | Red Hat Enterprise Linux 8 |
Unaffected:
0:140.11.0-1.el8_10 , < *
(rpm)
cpe:/a:redhat:enterprise_linux:8 |
|
| Red Hat | Red Hat Enterprise Linux 8.4 Advanced Mission Critical Update Support |
Unaffected:
0:140.11.0-1.el8_4 , < *
(rpm)
cpe:/a:redhat:rhel_aus:8.4 |
|
| Red Hat | Red Hat Enterprise Linux 8.4 Extended Update Support Long-Life Add-On |
Unaffected:
0:140.11.0-1.el8_4 , < *
(rpm)
cpe:/a:redhat:rhel_eus_long_life:8.4 |
|
| Red Hat | Red Hat Enterprise Linux 8.6 Advanced Mission Critical Update Support |
Unaffected:
0:140.11.0-1.el8_6 , < *
(rpm)
cpe:/a:redhat:rhel_aus:8.6 |
|
| Red Hat | Red Hat Enterprise Linux 8.6 Extended Update Support Long-Life Add-On |
Unaffected:
0:140.11.0-1.el8_6 , < *
(rpm)
cpe:/a:redhat:rhel_eus_long_life:8.6 |
|
| Red Hat | Red Hat Enterprise Linux 8.8 Telecommunications Update Service |
Unaffected:
0:140.11.0-1.el8_8 , < *
(rpm)
cpe:/a:redhat:rhel_tus:8.8 |
|
| Red Hat | Red Hat Enterprise Linux 8.8 Update Services for SAP Solutions |
Unaffected:
0:140.11.0-1.el8_8 , < *
(rpm)
cpe:/a:redhat:rhel_e4s:8.8 |
|
| Red Hat | Red Hat Enterprise Linux 9 |
Unaffected:
0:140.11.0-1.el9_8 , < *
(rpm)
cpe:/a:redhat:enterprise_linux:9 |
|
| Red Hat | Red Hat Enterprise Linux 9.2 Update Services for SAP Solutions |
Unaffected:
0:140.11.0-1.el9_2 , < *
(rpm)
cpe:/a:redhat:rhel_e4s:9.2 |
|
| Red Hat | Red Hat Enterprise Linux 9.4 Update Services for SAP Solutions |
Unaffected:
0:140.11.0-1.el9_4 , < *
(rpm)
cpe:/a:redhat:rhel_e4s:9.4 |
|
| Red Hat | Red Hat Enterprise Linux 9.6 Extended Update Support |
Unaffected:
0:140.11.0-1.el9_6 , < *
(rpm)
cpe:/a:redhat:rhel_eus:9.6 |
|
| Red Hat | Red Hat Enterprise Linux 10 |
cpe:/o:redhat:enterprise_linux:10 |
|
| Red Hat | Red Hat Enterprise Linux 6 |
cpe:/o:redhat:enterprise_linux:6 |
|
| Red Hat | Red Hat Enterprise Linux 7 |
cpe:/o:redhat:enterprise_linux:7 |
Credits
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CVE-2026-8946 (GCVE-0-2026-8946)
Vulnerability from nvd – Published: 2026-05-19 12:29 – Updated: 2026-07-15 11:47
VLAI
EPSS
VEX
Title
Incorrect boundary conditions in the Audio/Video: Web Codecs component
Summary
Incorrect boundary conditions in the Audio/Video: Web Codecs component. This vulnerability was fixed in Firefox 151, Firefox ESR 115.36, Firefox ESR 140.11, Thunderbird 151, and Thunderbird 140.11.
Severity
7.5 (High)
7.5 (High)
SSVC
Exploitation: none
Automatable: yes
Technical Impact: partial
CISA Coordinator (v2.0.3)
CWE
Assigner
References
30 references
Impacted products
19 products
| Vendor | Product | Version | |
|---|---|---|---|
| Mozilla | Firefox |
Unaffected:
115.36 , ≤ 115.*
(rpm)
Unaffected: 140.11 , ≤ 140.* (rpm) Unaffected: 151 , ≤ * (rpm) |
|
| Mozilla | Thunderbird |
Unaffected:
140.11 , ≤ 140.*
(rpm)
Unaffected: 151 , ≤ * (rpm) |
|
| Red Hat | Red Hat Enterprise Linux 10 |
Unaffected:
0:140.11.0-1.el10_2 , < *
(rpm)
cpe:/o:redhat:enterprise_linux:10.2 |
|
| Red Hat | Red Hat Enterprise Linux 10.0 Extended Update Support |
Unaffected:
0:140.11.0-1.el10_0 , < *
(rpm)
cpe:/o:redhat:enterprise_linux_eus:10.0 |
|
| Red Hat | Red Hat Enterprise Linux 7 Extended Lifecycle Support |
Unaffected:
0:140.11.0-1.el7_9 , < *
(rpm)
cpe:/o:redhat:rhel_els:7 |
|
| Red Hat | Red Hat Enterprise Linux 8 |
Unaffected:
0:140.11.0-1.el8_10 , < *
(rpm)
cpe:/a:redhat:enterprise_linux:8 |
|
| Red Hat | Red Hat Enterprise Linux 8.4 Advanced Mission Critical Update Support |
Unaffected:
0:140.11.0-1.el8_4 , < *
(rpm)
cpe:/a:redhat:rhel_aus:8.4 |
|
| Red Hat | Red Hat Enterprise Linux 8.4 Extended Update Support Long-Life Add-On |
Unaffected:
0:140.11.0-1.el8_4 , < *
(rpm)
cpe:/a:redhat:rhel_eus_long_life:8.4 |
|
| Red Hat | Red Hat Enterprise Linux 8.6 Advanced Mission Critical Update Support |
Unaffected:
0:140.11.0-1.el8_6 , < *
(rpm)
cpe:/a:redhat:rhel_aus:8.6 |
|
| Red Hat | Red Hat Enterprise Linux 8.6 Extended Update Support Long-Life Add-On |
Unaffected:
0:140.11.0-1.el8_6 , < *
(rpm)
cpe:/a:redhat:rhel_eus_long_life:8.6 |
|
| Red Hat | Red Hat Enterprise Linux 8.8 Telecommunications Update Service |
Unaffected:
0:140.11.0-1.el8_8 , < *
(rpm)
cpe:/a:redhat:rhel_tus:8.8 |
|
| Red Hat | Red Hat Enterprise Linux 8.8 Update Services for SAP Solutions |
Unaffected:
0:140.11.0-1.el8_8 , < *
(rpm)
cpe:/a:redhat:rhel_e4s:8.8 |
|
| Red Hat | Red Hat Enterprise Linux 9 |
Unaffected:
0:140.11.0-1.el9_8 , < *
(rpm)
cpe:/a:redhat:enterprise_linux:9 |
|
| Red Hat | Red Hat Enterprise Linux 9.2 Update Services for SAP Solutions |
Unaffected:
0:140.11.0-1.el9_2 , < *
(rpm)
cpe:/a:redhat:rhel_e4s:9.2 |
|
| Red Hat | Red Hat Enterprise Linux 9.4 Update Services for SAP Solutions |
Unaffected:
0:140.11.0-1.el9_4 , < *
(rpm)
cpe:/a:redhat:rhel_e4s:9.4 |
|
| Red Hat | Red Hat Enterprise Linux 9.6 Extended Update Support |
Unaffected:
0:140.11.0-1.el9_6 , < *
(rpm)
cpe:/a:redhat:rhel_eus:9.6 |
|
| Red Hat | Red Hat Enterprise Linux 10 |
cpe:/o:redhat:enterprise_linux:10 |
|
| Red Hat | Red Hat Enterprise Linux 6 |
cpe:/o:redhat:enterprise_linux:6 |
|
| Red Hat | Red Hat Enterprise Linux 7 |
cpe:/o:redhat:enterprise_linux:7 |
Credits
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CVE-2026-8975 (GCVE-0-2026-8975)
Vulnerability from cvelistv5 – Published: 2026-05-19 12:30 – Updated: 2026-07-15 02:47
VLAI
EPSS
VEX
Title
Memory safety bugs fixed in Firefox ESR 115.36, Firefox ESR 140.11 and Firefox 151
Summary
Memory safety bugs present in Firefox ESR 115.35, Firefox ESR 140.10 and Firefox 150. Some of these bugs showed evidence of memory corruption and we presume that with enough effort some of these could have been exploited to run arbitrary code. This vulnerability was fixed in Firefox 151, Firefox ESR 115.36, Firefox ESR 140.11, Thunderbird 151, and Thunderbird 140.11.
Severity
8.8 (High)
7.5 (High)
SSVC
Exploitation: none
Automatable: no
Technical Impact: total
CISA Coordinator (v2.0.3)
CWE
Assigner
References
30 references
Impacted products
19 products
| Vendor | Product | Version | |
|---|---|---|---|
| Mozilla | Firefox |
Unaffected:
115.36 , ≤ 115.*
(rpm)
Unaffected: 140.11 , ≤ 140.* (rpm) Unaffected: 151 , ≤ * (rpm) |
|
| Mozilla | Thunderbird |
Unaffected:
140.11 , ≤ 140.*
(rpm)
Unaffected: 151 , ≤ * (rpm) |
|
| Red Hat | Red Hat Enterprise Linux 10 |
Unaffected:
0:140.11.0-1.el10_2 , < *
(rpm)
cpe:/o:redhat:enterprise_linux:10.2 |
|
| Red Hat | Red Hat Enterprise Linux 10.0 Extended Update Support |
Unaffected:
0:140.11.0-1.el10_0 , < *
(rpm)
cpe:/o:redhat:enterprise_linux_eus:10.0 |
|
| Red Hat | Red Hat Enterprise Linux 7 Extended Lifecycle Support |
Unaffected:
0:140.11.0-1.el7_9 , < *
(rpm)
cpe:/o:redhat:rhel_els:7 |
|
| Red Hat | Red Hat Enterprise Linux 8 |
Unaffected:
0:140.11.0-1.el8_10 , < *
(rpm)
cpe:/a:redhat:enterprise_linux:8 |
|
| Red Hat | Red Hat Enterprise Linux 8.4 Advanced Mission Critical Update Support |
Unaffected:
0:140.11.0-1.el8_4 , < *
(rpm)
cpe:/a:redhat:rhel_aus:8.4 |
|
| Red Hat | Red Hat Enterprise Linux 8.4 Extended Update Support Long-Life Add-On |
Unaffected:
0:140.11.0-1.el8_4 , < *
(rpm)
cpe:/a:redhat:rhel_eus_long_life:8.4 |
|
| Red Hat | Red Hat Enterprise Linux 8.6 Advanced Mission Critical Update Support |
Unaffected:
0:140.11.0-1.el8_6 , < *
(rpm)
cpe:/a:redhat:rhel_aus:8.6 |
|
| Red Hat | Red Hat Enterprise Linux 8.6 Extended Update Support Long-Life Add-On |
Unaffected:
0:140.11.0-1.el8_6 , < *
(rpm)
cpe:/a:redhat:rhel_eus_long_life:8.6 |
|
| Red Hat | Red Hat Enterprise Linux 8.8 Telecommunications Update Service |
Unaffected:
0:140.11.0-1.el8_8 , < *
(rpm)
cpe:/a:redhat:rhel_tus:8.8 |
|
| Red Hat | Red Hat Enterprise Linux 8.8 Update Services for SAP Solutions |
Unaffected:
0:140.11.0-1.el8_8 , < *
(rpm)
cpe:/a:redhat:rhel_e4s:8.8 |
|
| Red Hat | Red Hat Enterprise Linux 9 |
Unaffected:
0:140.11.0-1.el9_8 , < *
(rpm)
cpe:/a:redhat:enterprise_linux:9 |
|
| Red Hat | Red Hat Enterprise Linux 9.2 Update Services for SAP Solutions |
Unaffected:
0:140.11.0-1.el9_2 , < *
(rpm)
cpe:/a:redhat:rhel_e4s:9.2 |
|
| Red Hat | Red Hat Enterprise Linux 9.4 Update Services for SAP Solutions |
Unaffected:
0:140.11.0-1.el9_4 , < *
(rpm)
cpe:/a:redhat:rhel_e4s:9.4 |
|
| Red Hat | Red Hat Enterprise Linux 9.6 Extended Update Support |
Unaffected:
0:140.11.0-1.el9_6 , < *
(rpm)
cpe:/a:redhat:rhel_eus:9.6 |
|
| Red Hat | Red Hat Enterprise Linux 10 |
cpe:/o:redhat:enterprise_linux:10 |
|
| Red Hat | Red Hat Enterprise Linux 6 |
cpe:/o:redhat:enterprise_linux:6 |
|
| Red Hat | Red Hat Enterprise Linux 7 |
cpe:/o:redhat:enterprise_linux:7 |
Credits
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"attackVector": "NETWORK",
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