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222 vulnerabilities by Synacor
CERTFR-2026-AVI-1041
Vulnerability from certfr_avis - Published: 2026-08-19 - Updated: 2026-08-19
De multiples vulnérabilités ont été découvertes dans Synacor Zimbra Collaboration. Certaines d'entre elles permettent à un attaquant de provoquer une exécution de code arbitraire à distance, une falsification de requêtes côté serveur (SSRF) et une injection de code indirecte à distance (XSS).
L'ENISA indique que la vulnérabilité CVE-2026-73570 est activement exploitée.
Solutions
Se référer au bulletin de sécurité de l'éditeur pour l'obtention des correctifs (cf. section Documentation).
Impacted products
| Vendor | Product | Description | ||
|---|---|---|---|---|
| Synacor | Zimbra Collaboration | Zimbra Collaboration versions antérieures à 10.1.20 |
References
| Title | Publication Time | Tags | ||||||
|---|---|---|---|---|---|---|---|---|
|
||||||||
{
"$ref": "https://www.cert.ssi.gouv.fr/openapi.json",
"affected_systems": [
{
"description": "Zimbra Collaboration versions ant\u00e9rieures \u00e0 10.1.20",
"product": {
"name": "Zimbra Collaboration",
"vendor": {
"name": "Synacor",
"scada": false
}
}
}
],
"affected_systems_content": "",
"content": "## Solutions\n\nSe r\u00e9f\u00e9rer au bulletin de s\u00e9curit\u00e9 de l\u0027\u00e9diteur pour l\u0027obtention des correctifs (cf. section Documentation).",
"cves": [
{
"name": "CVE-2026-50055",
"url": "https://www.cve.org/CVERecord?id=CVE-2026-50055"
},
{
"name": "CVE-2026-73570",
"url": "https://www.cve.org/CVERecord?id=CVE-2026-73570"
},
{
"name": "CVE-2026-10631",
"url": "https://www.cve.org/CVERecord?id=CVE-2026-10631"
},
{
"name": "CVE-2026-50054",
"url": "https://www.cve.org/CVERecord?id=CVE-2026-50054"
}
],
"initial_release_date": "2026-08-19T00:00:00",
"last_revision_date": "2026-08-19T00:00:00",
"links": [
{
"title": "ENISA EUVD",
"url": "https://euvd.enisa.europa.eu/vulnerability/CVE-2026-73570"
}
],
"reference": "CERTFR-2026-AVI-1041",
"revisions": [
{
"description": "Version initiale",
"revision_date": "2026-08-19T00:00:00.000000"
}
],
"risks": [
{
"description": "Injection de code indirecte \u00e0 distance (XSS)"
},
{
"description": "Ex\u00e9cution de code arbitraire \u00e0 distance"
},
{
"description": "Non sp\u00e9cifi\u00e9 par l\u0027\u00e9diteur"
},
{
"description": "Falsification de requ\u00eates c\u00f4t\u00e9 serveur (SSRF)"
},
{
"description": "Contournement de la politique de s\u00e9curit\u00e9"
}
],
"summary": "De multiples vuln\u00e9rabilit\u00e9s ont \u00e9t\u00e9 d\u00e9couvertes dans Synacor Zimbra Collaboration. Certaines d\u0027entre elles permettent \u00e0 un attaquant de provoquer une ex\u00e9cution de code arbitraire \u00e0 distance, une falsification de requ\u00eates c\u00f4t\u00e9 serveur (SSRF) et une injection de code indirecte \u00e0 distance (XSS).\n\nL\u0027ENISA indique que la vuln\u00e9rabilit\u00e9 CVE-2026-73570 est activement exploit\u00e9e.",
"title": "Multiples vuln\u00e9rabilit\u00e9s dans Synacor Zimbra Collaboration",
"vendor_advisories": [
{
"published_at": "2026-08-13",
"title": "Bulletin de s\u00e9curit\u00e9 Zimbra",
"url": "https://wiki.zimbra.com/wiki/Zimbra_Security_Advisories"
}
]
}
CERTFR-2026-AVI-0844
Vulnerability from certfr_avis - Published: 2026-07-07 - Updated: 2026-07-07
Une vulnérabilité a été découverte dans Synacor Zimbra Collaboration. Elle permet à un attaquant de provoquer une injection de code indirecte à distance (XSS).
Solutions
Se référer au bulletin de sécurité de l'éditeur pour l'obtention des correctifs (cf. section Documentation).
Impacted products
| Vendor | Product | Description | ||
|---|---|---|---|---|
| Synacor | Zimbra Collaboration | Zimbra Collaboration versions antérieures à 10.1.19 |
References
| Title | Publication Time | Tags | |||
|---|---|---|---|---|---|
|
|||||
{
"$ref": "https://www.cert.ssi.gouv.fr/openapi.json",
"affected_systems": [
{
"description": "Zimbra Collaboration versions ant\u00e9rieures \u00e0 10.1.19",
"product": {
"name": "Zimbra Collaboration",
"vendor": {
"name": "Synacor",
"scada": false
}
}
}
],
"affected_systems_content": "",
"content": "## Solutions\n\nSe r\u00e9f\u00e9rer au bulletin de s\u00e9curit\u00e9 de l\u0027\u00e9diteur pour l\u0027obtention des correctifs (cf. section Documentation).",
"cves": [],
"initial_release_date": "2026-07-07T00:00:00",
"last_revision_date": "2026-07-07T00:00:00",
"links": [],
"reference": "CERTFR-2026-AVI-0844",
"revisions": [
{
"description": "Version initiale",
"revision_date": "2026-07-07T00:00:00.000000"
}
],
"risks": [
{
"description": "Injection de code indirecte \u00e0 distance (XSS)"
}
],
"summary": "Une vuln\u00e9rabilit\u00e9 a \u00e9t\u00e9 d\u00e9couverte dans Synacor Zimbra Collaboration. Elle permet \u00e0 un attaquant de provoquer une injection de code indirecte \u00e0 distance (XSS).",
"title": "Vuln\u00e9rabilit\u00e9 dans Synacor Zimbra Collaboration",
"vendor_advisories": [
{
"published_at": "2026-07-07",
"title": "Bulletin de s\u00e9curit\u00e9 Synacor Zimbra Collaboration",
"url": "https://wiki.zimbra.com/wiki/Zimbra_Releases/10.1.19#Security_Fixes"
}
]
}
CVE-2026-73576 (GCVE-0-2026-73576)
Vulnerability from nvd – Published: 2026-08-13 15:26 – Updated: 2026-08-13 15:58
VLAI
EPSS
VEX
Summary
In Zimbra Collaboration (ZCS) before 10.1.17, weak cryptographic key generation vulnerability exists in the OnlyOffice integration. The zimbraDocumentEditingJwtSecret is generated using an insecure random number generator, resulting in insufficient entropy. An attacker who obtains a JWT signed with the generated secret may be able to recover the JWT signing secret through offline brute-force, potentially enabling JWT forgery.
Severity
6.3 (Medium)
SSVC
Exploitation: none
Automatable: no
Technical Impact: partial
CISA Coordinator · CISA-ADP (v2.0.3)
Decision recorded 2026-08-13 15:49 UTC
CWE
- CWE-1241 - Use of Predictable Algorithm in Random Number Generator
Assigner
References
Impacted products
1 product
| Vendor | Product | Version | |
|---|---|---|---|
| Zimbra | Collaboration |
Affected:
0 , < 10.1.17
(custom)
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CVE-2026-73575 (GCVE-0-2026-73575)
Vulnerability from nvd – Published: 2026-08-13 15:24 – Updated: 2026-08-13 15:58
VLAI
EPSS
VEX
Summary
In Zimbra Collaboration (ZCS) before 10.1.17, a Cross-Site Request Forgery (CSRF) vulnerability exists in the Exchange Web Services (EWS) endpoint of Zimbra Collaboration (ZCS) due to insufficient validation of request content types. An attacker can exploit this vulnerability by causing an authenticated user to submit a crafted request, potentially allowing unauthorized actions to be performed on behalf of the victim.
Severity
SSVC
Exploitation: none
Automatable: no
Technical Impact: partial
CISA Coordinator · CISA-ADP (v2.0.3)
Decision recorded 2026-08-13 15:49 UTC
CWE
- CWE-352 - Cross-Site Request Forgery (CSRF)
Assigner
References
Impacted products
1 product
| Vendor | Product | Version | |
|---|---|---|---|
| Zimbra | Collaboration |
Affected:
0 , < 10.1.17
(custom)
cpe:2.3:a:zimbra:collaboration:*:*:*:*:*:*:*:* |
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CVE-2026-73574 (GCVE-0-2026-73574)
Vulnerability from nvd – Published: 2026-08-13 15:23 – Updated: 2026-08-13 15:58
VLAI
EPSS
VEX
Summary
In Zimbra Collaboration before 10.1.17, a local file inclusion (LFI) vulnerability exists in the Zimbra Classic Web Client due to improper validation of the fu request parameter. An unauthenticated attacker can exploit this vulnerability by supplying a crafted path, potentially allowing unauthorized disclosure of protected files, such as WEB-INF/web.xml, within the web application directory. This occurs in the Forward servlet.
Severity
SSVC
Exploitation: none
Automatable: yes
Technical Impact: partial
CISA Coordinator · CISA-ADP (v2.0.3)
Decision recorded 2026-08-13 15:50 UTC
CWE
- CWE-669 - Incorrect Resource Transfer Between Spheres
Assigner
References
Impacted products
1 product
| Vendor | Product | Version | |
|---|---|---|---|
| Zimbra | Collaboration |
Affected:
0 , < 10.1.17
(custom)
cpe:2.3:a:zimbra:collaboration:*:*:*:*:*:*:*:* |
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CVE-2026-73573 (GCVE-0-2026-73573)
Vulnerability from nvd – Published: 2026-08-13 15:22 – Updated: 2026-08-13 15:58
VLAI
EPSS
VEX
Summary
In Zimbra Collaboration (ZCS) before 10.1.17, a path traversal vulnerability exists in the Zimbra Briefcase document editing functionality due to improper validation of the packages parameter. An authenticated attacker can exploit this vulnerability by supplying a crafted path traversal sequence, potentially allowing unauthorized disclosure of sensitive files within the web application directory.
Severity
SSVC
Exploitation: none
Automatable: no
Technical Impact: partial
CISA Coordinator · CISA-ADP (v2.0.3)
Decision recorded 2026-08-13 15:50 UTC
CWE
- CWE-24 - Path Traversal: '../filedir'
Assigner
References
Impacted products
1 product
| Vendor | Product | Version | |
|---|---|---|---|
| Zimbra | Collaboration |
Affected:
0 , < 10.1.17
(custom)
cpe:2.3:a:zimbra:collaboration:*:*:*:*:*:*:*:* |
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CVE-2026-73572 (GCVE-0-2026-73572)
Vulnerability from nvd – Published: 2026-08-13 15:21 – Updated: 2026-08-13 15:57
VLAI
EPSS
VEX
Summary
In Zimbra Collaboration (ZCS) before 10.1.17, a stored cross-site scripting (XSS) vulnerability exists in the Zimbra Classic Web Client due to insufficient sanitization of specific attachment content during inline preview. An attacker can send a crafted email containing a malicious attachment that, when previewed by a user, executes arbitrary JavaScript within the victim's browser session. Successful exploitation may allow an attacker to perform unauthorized actions on behalf of the victim user, potentially leading to data exfiltration or unauthorized access to sensitive information.
Severity
6.1 (Medium)
SSVC
Exploitation: none
Automatable: no
Technical Impact: partial
CISA Coordinator · CISA-ADP (v2.0.3)
Decision recorded 2026-08-13 15:50 UTC
CWE
- CWE-79 - Improper Neutralization of Input During Web Page Generation (XSS or 'Cross-site Scripting')
Assigner
References
Impacted products
1 product
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Affected:
0 , < 10.1.17
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CVE-2026-73571 (GCVE-0-2026-73571)
Vulnerability from nvd – Published: 2026-08-13 15:20 – Updated: 2026-08-13 15:57
VLAI
EPSS
VEX
Summary
An authorization bypass vulnerability exists in Zimbra Collaboration (ZCS) before 10.1.17 due to improper authorization validation in delegated email sending functionality. An authenticated attacker can send specially crafted SOAP requests to impersonate another user and send emails without possessing the required delegation or send-as permissions. This occurs in the SaveDraftRequest SOAP handler.
Severity
SSVC
Exploitation: none
Automatable: no
Technical Impact: partial
CISA Coordinator · CISA-ADP (v2.0.3)
Decision recorded 2026-08-13 15:51 UTC
CWE
- CWE-863 - Incorrect Authorization
Assigner
References
Impacted products
1 product
| Vendor | Product | Version | |
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| Zimbra | Collaboration |
Affected:
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CVE-2026-73570 (GCVE-0-2026-73570)
Vulnerability from nvd – Published: 2026-08-13 15:19 – Updated: 2026-08-24 12:17Summary
A remote code execution vulnerability exists in Zimbra Collaboration (ZCS) before 10.1.20 when the optional zimbra-snmp package is installed and SNMP notifications are enabled. Due to improper sanitization of untrusted input during SNMP notification processing, an unauthenticated attacker can send specially crafted SMTP requests that may result in execution of arbitrary operating system commands as the Zimbra user.
Severity
8.9 (High)
SSVC
Exploitation: active
Automatable: no
Technical Impact: total
CISA Coordinator · CISA-ADP (v2.0.3)
Decision recorded 2026-08-22 03:55 UTC
CWE
- CWE-78 - Improper Neutralization of Special Elements used in an OS Command ('OS Command Injection')
Assigner
References
4 references
| URL | Tags |
|---|---|
| https://wiki.zimbra.com/wiki/Zimbra_Security_Advisories | |
| https://wiki.zimbra.com/wiki/Security_Center | |
| https://moje.cert.pl/komunikaty/2026/145/aktywnie… | third-party-advisory |
| https://www.cisa.gov/known-exploited-vulnerabilit… | government-resource |
Impacted products
1 product
| Vendor | Product | Version | |
|---|---|---|---|
| Zimbra | Collaboration |
Affected:
0 , < 10.1.20
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cpe:2.3:a:zimbra:collaboration:*:*:*:*:*:*:*:* |
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CVE-2026-33373 (GCVE-0-2026-33373)
Vulnerability from nvd – Published: 2026-03-30 00:00 – Updated: 2026-04-01 15:38
VLAI
EPSS
VEX
Summary
An issue was discovered in Zimbra Collaboration (ZCS) 10.0 and 10.1. A Cross-Site Request Forgery (CSRF) vulnerability exists in Zimbra Web Client due to the issuance of authentication tokens without CSRF protection during certain account state transitions. Specifically, tokens generated after operations such as enabling two-factor authentication or changing a password may lack CSRF enforcement. While such a token is active, authenticated SOAP requests that trigger token generation or state changes can be performed without CSRF validation. An attacker could exploit this by inducing a victim to submit crafted requests, potentially allowing sensitive account actions such as disabling two-factor authentication. The issue is mitigated by ensuring CSRF protection is consistently enforced for all issued authentication tokens.
Severity
8.8 (High)
SSVC
Exploitation: none
Automatable: no
Technical Impact: total
CISA Coordinator · CISA-ADP (v2.0.3)
Decision recorded 2026-04-01 15:36 UTC
CWE
- n/a
- CWE-352 - Cross-Site Request Forgery (CSRF)
Assigner
References
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CVE-2026-33372 (GCVE-0-2026-33372)
Vulnerability from nvd – Published: 2026-03-20 00:00 – Updated: 2026-03-23 13:40
VLAI
EPSS
VEX
Summary
An issue was discovered in Zimbra Collaboration (ZCS) 10.0 and 10.1. A cross-site request forgery (CSRF) vulnerability exists in Zimbra Webmail due to improper validation of CSRF tokens. The application accepts CSRF tokens supplied within the request body instead of requiring them through the expected request header. An attacker can exploit this issue by tricking an authenticated user into submitting a crafted request. This may allow unauthorized actions to be performed on behalf of the victim.
Severity
5.4 (Medium)
SSVC
Exploitation: none
Automatable: no
Technical Impact: partial
CISA Coordinator · CISA-ADP (v2.0.3)
Decision recorded 2026-03-23 13:40 UTC
CWE
- n/a
- CWE-352 - Cross-Site Request Forgery (CSRF)
Assigner
References
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CVE-2026-33371 (GCVE-0-2026-33371)
Vulnerability from nvd – Published: 2026-03-20 00:00 – Updated: 2026-03-23 13:39
VLAI
EPSS
VEX
Summary
An issue was discovered in Zimbra Collaboration (ZCS) 10.0 and 10.1. An XML External Entity (XXE) vulnerability exists in the Zimbra Exchange Web Services (EWS) SOAP interface due to improper handling of XML input. An authenticated attacker can submit crafted XML data that is processed by an XML parser with external entity resolution enabled. Successful exploitation may allow disclosure of sensitive local files from the server.
Severity
4.3 (Medium)
SSVC
Exploitation: none
Automatable: no
Technical Impact: partial
CISA Coordinator · CISA-ADP (v2.0.3)
Decision recorded 2026-03-23 13:39 UTC
CWE
- n/a
- CWE-611 - Improper Restriction of XML External Entity Reference
Assigner
References
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CVE-2026-33370 (GCVE-0-2026-33370)
Vulnerability from nvd – Published: 2026-03-20 00:00 – Updated: 2026-03-23 13:38
VLAI
EPSS
VEX
Summary
An issue was discovered in Zimbra Collaboration (ZCS) 10.0 and 10.1. A stored cross-site scripting (XSS) vulnerability exists in the Zimbra Briefcase feature due to insufficient sanitization of specific uploaded file types. When a user opens a publicly shared Briefcase file containing malicious scripts, the embedded JavaScript executes in the context of the user's session. This allows an attacker to run arbitrary scripts, potentially leading to data exfiltration or other unauthorized actions on behalf of the victim user.
Severity
6.1 (Medium)
SSVC
Exploitation: none
Automatable: no
Technical Impact: partial
CISA Coordinator · CISA-ADP (v2.0.3)
Decision recorded 2026-03-23 13:38 UTC
CWE
- n/a
- CWE-79 - Improper Neutralization of Input During Web Page Generation ('Cross-site Scripting')
Assigner
References
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CVE-2026-33369 (GCVE-0-2026-33369)
Vulnerability from nvd – Published: 2026-03-20 00:00 – Updated: 2026-03-23 13:36
VLAI
EPSS
VEX
Summary
Zimbra Collaboration (ZCS) 10.0 and 10.1 contains an LDAP injection vulnerability in the Mailbox SOAP service within a FolderAction operation. The application fails to properly sanitize user-supplied input before incorporating it into an LDAP search filter. An authenticated attacker can exploit this issue by sending a crafted SOAP request that manipulates the LDAP query, allowing retrieval of sensitive directory attributes.
Severity
4.3 (Medium)
SSVC
Exploitation: none
Automatable: no
Technical Impact: partial
CISA Coordinator · CISA-ADP (v2.0.3)
Decision recorded 2026-03-23 13:36 UTC
CWE
- n/a
- CWE-20 - Improper Input Validation
Assigner
References
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CVE-2026-33368 (GCVE-0-2026-33368)
Vulnerability from nvd – Published: 2026-03-20 00:00 – Updated: 2026-03-23 13:22
VLAI
EPSS
VEX
Summary
Zimbra Collaboration Suite (ZCS) 10.0 and 10.1 contains a reflected cross-site scripting (XSS) vulnerability in the Classic Webmail REST interface (/h/rest). The application fails to properly sanitize user-supplied input, allowing an unauthenticated attacker to inject malicious JavaScript into a crafted URL. When a victim user accesses the link, the injected script executes in the context of the Zimbra webmail application, which could allow the attacker to perform actions on behalf of the victim.
Severity
6.1 (Medium)
SSVC
Exploitation: none
Automatable: no
Technical Impact: partial
CISA Coordinator · CISA-ADP (v2.0.3)
Decision recorded 2026-03-23 13:08 UTC
CWE
- n/a
- CWE-79 - Improper Neutralization of Input During Web Page Generation ('Cross-site Scripting')
Assigner
References
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CVE-2025-66376 (GCVE-0-2025-66376)
Vulnerability from nvd – Published: 2026-01-05 00:00 – Updated: 2026-03-19 03:55Summary
Zimbra Collaboration (ZCS) 10 before 10.0.18 and 10.1 before 10.1.13 allows Classic UI stored XSS via Cascading Style Sheets (CSS) @import directives in an HTML e-mail message.
Severity
7.2 (High)
SSVC
Exploitation: active
Automatable: no
Technical Impact: partial
CISA Coordinator · CISA-ADP (v2.0.3)
Decision recorded 2026-03-17 00:00 UTC
CWE
- CWE-79 - Improper Neutralization of Input During Web Page Generation (XSS or 'Cross-site Scripting')
Assigner
References
6 references
Impacted products
1 product
| Vendor | Product | Version | |
|---|---|---|---|
| Zimbra | Collaboration |
Affected:
10.0 , < 10.0.18
(custom)
Affected: 10.1 , < 10.1.13 (custom) cpe:2.3:a:zimbra:collaboration:*:*:*:*:*:*:*:* cpe:2.3:a:zimbra:collaboration:*:*:*:*:*:*:*:* |
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CVE-2026-73576 (GCVE-0-2026-73576)
Vulnerability from cvelistv5 – Published: 2026-08-13 15:26 – Updated: 2026-08-13 15:58
VLAI
EPSS
VEX
Summary
In Zimbra Collaboration (ZCS) before 10.1.17, weak cryptographic key generation vulnerability exists in the OnlyOffice integration. The zimbraDocumentEditingJwtSecret is generated using an insecure random number generator, resulting in insufficient entropy. An attacker who obtains a JWT signed with the generated secret may be able to recover the JWT signing secret through offline brute-force, potentially enabling JWT forgery.
Severity
6.3 (Medium)
SSVC
Exploitation: none
Automatable: no
Technical Impact: partial
CISA Coordinator · CISA-ADP (v2.0.3)
Decision recorded 2026-08-13 15:49 UTC
CWE
- CWE-1241 - Use of Predictable Algorithm in Random Number Generator
Assigner
References
Impacted products
1 product
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|---|---|---|---|
| Zimbra | Collaboration |
Affected:
0 , < 10.1.17
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CVE-2026-73575 (GCVE-0-2026-73575)
Vulnerability from cvelistv5 – Published: 2026-08-13 15:24 – Updated: 2026-08-13 15:58
VLAI
EPSS
VEX
Summary
In Zimbra Collaboration (ZCS) before 10.1.17, a Cross-Site Request Forgery (CSRF) vulnerability exists in the Exchange Web Services (EWS) endpoint of Zimbra Collaboration (ZCS) due to insufficient validation of request content types. An attacker can exploit this vulnerability by causing an authenticated user to submit a crafted request, potentially allowing unauthorized actions to be performed on behalf of the victim.
Severity
SSVC
Exploitation: none
Automatable: no
Technical Impact: partial
CISA Coordinator · CISA-ADP (v2.0.3)
Decision recorded 2026-08-13 15:49 UTC
CWE
- CWE-352 - Cross-Site Request Forgery (CSRF)
Assigner
References
Impacted products
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|---|---|---|---|
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Affected:
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CVE-2026-73574 (GCVE-0-2026-73574)
Vulnerability from cvelistv5 – Published: 2026-08-13 15:23 – Updated: 2026-08-13 15:58
VLAI
EPSS
VEX
Summary
In Zimbra Collaboration before 10.1.17, a local file inclusion (LFI) vulnerability exists in the Zimbra Classic Web Client due to improper validation of the fu request parameter. An unauthenticated attacker can exploit this vulnerability by supplying a crafted path, potentially allowing unauthorized disclosure of protected files, such as WEB-INF/web.xml, within the web application directory. This occurs in the Forward servlet.
Severity
SSVC
Exploitation: none
Automatable: yes
Technical Impact: partial
CISA Coordinator · CISA-ADP (v2.0.3)
Decision recorded 2026-08-13 15:50 UTC
CWE
- CWE-669 - Incorrect Resource Transfer Between Spheres
Assigner
References
Impacted products
1 product
| Vendor | Product | Version | |
|---|---|---|---|
| Zimbra | Collaboration |
Affected:
0 , < 10.1.17
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CVE-2026-73573 (GCVE-0-2026-73573)
Vulnerability from cvelistv5 – Published: 2026-08-13 15:22 – Updated: 2026-08-13 15:58
VLAI
EPSS
VEX
Summary
In Zimbra Collaboration (ZCS) before 10.1.17, a path traversal vulnerability exists in the Zimbra Briefcase document editing functionality due to improper validation of the packages parameter. An authenticated attacker can exploit this vulnerability by supplying a crafted path traversal sequence, potentially allowing unauthorized disclosure of sensitive files within the web application directory.
Severity
SSVC
Exploitation: none
Automatable: no
Technical Impact: partial
CISA Coordinator · CISA-ADP (v2.0.3)
Decision recorded 2026-08-13 15:50 UTC
CWE
- CWE-24 - Path Traversal: '../filedir'
Assigner
References
Impacted products
1 product
| Vendor | Product | Version | |
|---|---|---|---|
| Zimbra | Collaboration |
Affected:
0 , < 10.1.17
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CVE-2026-73572 (GCVE-0-2026-73572)
Vulnerability from cvelistv5 – Published: 2026-08-13 15:21 – Updated: 2026-08-13 15:57
VLAI
EPSS
VEX
Summary
In Zimbra Collaboration (ZCS) before 10.1.17, a stored cross-site scripting (XSS) vulnerability exists in the Zimbra Classic Web Client due to insufficient sanitization of specific attachment content during inline preview. An attacker can send a crafted email containing a malicious attachment that, when previewed by a user, executes arbitrary JavaScript within the victim's browser session. Successful exploitation may allow an attacker to perform unauthorized actions on behalf of the victim user, potentially leading to data exfiltration or unauthorized access to sensitive information.
Severity
6.1 (Medium)
SSVC
Exploitation: none
Automatable: no
Technical Impact: partial
CISA Coordinator · CISA-ADP (v2.0.3)
Decision recorded 2026-08-13 15:50 UTC
CWE
- CWE-79 - Improper Neutralization of Input During Web Page Generation (XSS or 'Cross-site Scripting')
Assigner
References
Impacted products
1 product
| Vendor | Product | Version | |
|---|---|---|---|
| Zimbra | Collaboration |
Affected:
0 , < 10.1.17
(custom)
cpe:2.3:a:zimbra:collaboration:*:*:*:*:*:*:*:* |
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CVE-2026-73571 (GCVE-0-2026-73571)
Vulnerability from cvelistv5 – Published: 2026-08-13 15:20 – Updated: 2026-08-13 15:57
VLAI
EPSS
VEX
Summary
An authorization bypass vulnerability exists in Zimbra Collaboration (ZCS) before 10.1.17 due to improper authorization validation in delegated email sending functionality. An authenticated attacker can send specially crafted SOAP requests to impersonate another user and send emails without possessing the required delegation or send-as permissions. This occurs in the SaveDraftRequest SOAP handler.
Severity
SSVC
Exploitation: none
Automatable: no
Technical Impact: partial
CISA Coordinator · CISA-ADP (v2.0.3)
Decision recorded 2026-08-13 15:51 UTC
CWE
- CWE-863 - Incorrect Authorization
Assigner
References
Impacted products
1 product
| Vendor | Product | Version | |
|---|---|---|---|
| Zimbra | Collaboration |
Affected:
0 , < 10.1.17
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CVE-2026-73570 (GCVE-0-2026-73570)
Vulnerability from cvelistv5 – Published: 2026-08-13 15:19 – Updated: 2026-08-24 12:17Summary
A remote code execution vulnerability exists in Zimbra Collaboration (ZCS) before 10.1.20 when the optional zimbra-snmp package is installed and SNMP notifications are enabled. Due to improper sanitization of untrusted input during SNMP notification processing, an unauthenticated attacker can send specially crafted SMTP requests that may result in execution of arbitrary operating system commands as the Zimbra user.
Severity
8.9 (High)
SSVC
Exploitation: active
Automatable: no
Technical Impact: total
CISA Coordinator · CISA-ADP (v2.0.3)
Decision recorded 2026-08-22 03:55 UTC
CWE
- CWE-78 - Improper Neutralization of Special Elements used in an OS Command ('OS Command Injection')
Assigner
References
4 references
| URL | Tags |
|---|---|
| https://wiki.zimbra.com/wiki/Zimbra_Security_Advisories | |
| https://wiki.zimbra.com/wiki/Security_Center | |
| https://moje.cert.pl/komunikaty/2026/145/aktywnie… | third-party-advisory |
| https://www.cisa.gov/known-exploited-vulnerabilit… | government-resource |
Impacted products
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Affected:
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CVE-2026-33373 (GCVE-0-2026-33373)
Vulnerability from cvelistv5 – Published: 2026-03-30 00:00 – Updated: 2026-04-01 15:38
VLAI
EPSS
VEX
Summary
An issue was discovered in Zimbra Collaboration (ZCS) 10.0 and 10.1. A Cross-Site Request Forgery (CSRF) vulnerability exists in Zimbra Web Client due to the issuance of authentication tokens without CSRF protection during certain account state transitions. Specifically, tokens generated after operations such as enabling two-factor authentication or changing a password may lack CSRF enforcement. While such a token is active, authenticated SOAP requests that trigger token generation or state changes can be performed without CSRF validation. An attacker could exploit this by inducing a victim to submit crafted requests, potentially allowing sensitive account actions such as disabling two-factor authentication. The issue is mitigated by ensuring CSRF protection is consistently enforced for all issued authentication tokens.
Severity
8.8 (High)
SSVC
Exploitation: none
Automatable: no
Technical Impact: total
CISA Coordinator · CISA-ADP (v2.0.3)
Decision recorded 2026-04-01 15:36 UTC
CWE
- n/a
- CWE-352 - Cross-Site Request Forgery (CSRF)
Assigner
References
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CVE-2026-33371 (GCVE-0-2026-33371)
Vulnerability from cvelistv5 – Published: 2026-03-20 00:00 – Updated: 2026-03-23 13:39
VLAI
EPSS
VEX
Summary
An issue was discovered in Zimbra Collaboration (ZCS) 10.0 and 10.1. An XML External Entity (XXE) vulnerability exists in the Zimbra Exchange Web Services (EWS) SOAP interface due to improper handling of XML input. An authenticated attacker can submit crafted XML data that is processed by an XML parser with external entity resolution enabled. Successful exploitation may allow disclosure of sensitive local files from the server.
Severity
4.3 (Medium)
SSVC
Exploitation: none
Automatable: no
Technical Impact: partial
CISA Coordinator · CISA-ADP (v2.0.3)
Decision recorded 2026-03-23 13:39 UTC
CWE
- n/a
- CWE-611 - Improper Restriction of XML External Entity Reference
Assigner
References
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CVE-2026-33370 (GCVE-0-2026-33370)
Vulnerability from cvelistv5 – Published: 2026-03-20 00:00 – Updated: 2026-03-23 13:38
VLAI
EPSS
VEX
Summary
An issue was discovered in Zimbra Collaboration (ZCS) 10.0 and 10.1. A stored cross-site scripting (XSS) vulnerability exists in the Zimbra Briefcase feature due to insufficient sanitization of specific uploaded file types. When a user opens a publicly shared Briefcase file containing malicious scripts, the embedded JavaScript executes in the context of the user's session. This allows an attacker to run arbitrary scripts, potentially leading to data exfiltration or other unauthorized actions on behalf of the victim user.
Severity
6.1 (Medium)
SSVC
Exploitation: none
Automatable: no
Technical Impact: partial
CISA Coordinator · CISA-ADP (v2.0.3)
Decision recorded 2026-03-23 13:38 UTC
CWE
- n/a
- CWE-79 - Improper Neutralization of Input During Web Page Generation ('Cross-site Scripting')
Assigner
References
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CVE-2026-33372 (GCVE-0-2026-33372)
Vulnerability from cvelistv5 – Published: 2026-03-20 00:00 – Updated: 2026-03-23 13:40
VLAI
EPSS
VEX
Summary
An issue was discovered in Zimbra Collaboration (ZCS) 10.0 and 10.1. A cross-site request forgery (CSRF) vulnerability exists in Zimbra Webmail due to improper validation of CSRF tokens. The application accepts CSRF tokens supplied within the request body instead of requiring them through the expected request header. An attacker can exploit this issue by tricking an authenticated user into submitting a crafted request. This may allow unauthorized actions to be performed on behalf of the victim.
Severity
5.4 (Medium)
SSVC
Exploitation: none
Automatable: no
Technical Impact: partial
CISA Coordinator · CISA-ADP (v2.0.3)
Decision recorded 2026-03-23 13:40 UTC
CWE
- n/a
- CWE-352 - Cross-Site Request Forgery (CSRF)
Assigner
References
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CVE-2026-33368 (GCVE-0-2026-33368)
Vulnerability from cvelistv5 – Published: 2026-03-20 00:00 – Updated: 2026-03-23 13:22
VLAI
EPSS
VEX
Summary
Zimbra Collaboration Suite (ZCS) 10.0 and 10.1 contains a reflected cross-site scripting (XSS) vulnerability in the Classic Webmail REST interface (/h/rest). The application fails to properly sanitize user-supplied input, allowing an unauthenticated attacker to inject malicious JavaScript into a crafted URL. When a victim user accesses the link, the injected script executes in the context of the Zimbra webmail application, which could allow the attacker to perform actions on behalf of the victim.
Severity
6.1 (Medium)
SSVC
Exploitation: none
Automatable: no
Technical Impact: partial
CISA Coordinator · CISA-ADP (v2.0.3)
Decision recorded 2026-03-23 13:08 UTC
CWE
- n/a
- CWE-79 - Improper Neutralization of Input During Web Page Generation ('Cross-site Scripting')
Assigner
References
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CVE-2026-33369 (GCVE-0-2026-33369)
Vulnerability from cvelistv5 – Published: 2026-03-20 00:00 – Updated: 2026-03-23 13:36
VLAI
EPSS
VEX
Summary
Zimbra Collaboration (ZCS) 10.0 and 10.1 contains an LDAP injection vulnerability in the Mailbox SOAP service within a FolderAction operation. The application fails to properly sanitize user-supplied input before incorporating it into an LDAP search filter. An authenticated attacker can exploit this issue by sending a crafted SOAP request that manipulates the LDAP query, allowing retrieval of sensitive directory attributes.
Severity
4.3 (Medium)
SSVC
Exploitation: none
Automatable: no
Technical Impact: partial
CISA Coordinator · CISA-ADP (v2.0.3)
Decision recorded 2026-03-23 13:36 UTC
CWE
- n/a
- CWE-20 - Improper Input Validation
Assigner
References
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CVE-2025-66376 (GCVE-0-2025-66376)
Vulnerability from cvelistv5 – Published: 2026-01-05 00:00 – Updated: 2026-03-19 03:55Summary
Zimbra Collaboration (ZCS) 10 before 10.0.18 and 10.1 before 10.1.13 allows Classic UI stored XSS via Cascading Style Sheets (CSS) @import directives in an HTML e-mail message.
Severity
7.2 (High)
SSVC
Exploitation: active
Automatable: no
Technical Impact: partial
CISA Coordinator · CISA-ADP (v2.0.3)
Decision recorded 2026-03-17 00:00 UTC
CWE
- CWE-79 - Improper Neutralization of Input During Web Page Generation (XSS or 'Cross-site Scripting')
Assigner
References
6 references
Impacted products
1 product
| Vendor | Product | Version | |
|---|---|---|---|
| Zimbra | Collaboration |
Affected:
10.0 , < 10.0.18
(custom)
Affected: 10.1 , < 10.1.13 (custom) cpe:2.3:a:zimbra:collaboration:*:*:*:*:*:*:*:* cpe:2.3:a:zimbra:collaboration:*:*:*:*:*:*:*:* |
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