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8 vulnerabilities found for fleet_server by elastic
CVE-2026-78587 (GCVE-0-2026-78587)
Vulnerability from nvd – Published: 2026-09-02 14:43 – Updated: 2026-09-02 15:58
VLAI
EPSS
VEX
Title
Incorrect Authorization in Fleet Server Leading to Denial of Service of Agent Upload Operations
Summary
Incorrect Authorization (CWE-863) in Fleet Server can lead to a denial of service of agent upload operations via Privilege Abuse (CAPEC-122). Fleet Server does not correctly verify session ownership during multi-part data upload operations, allowing any authenticated agent to interfere with the active upload sessions belonging to other enrolled agents.
Severity
SSVC
Exploitation: none
Automatable: no
Technical Impact: partial
CISA Coordinator · CISA-ADP (v2.0.3)
Decision recorded 2026-09-02 15:45 UTC
CWE
- CWE-863 - Incorrect Authorization
Assigner
References
1 reference
Impacted products
1 product
| Vendor | Product | Version | |
|---|---|---|---|
| Elastic | Fleet Server |
Affected:
8.0.0 , ≤ 8.19.15
(semver)
Affected: 9.0.0 , ≤ 9.3.4 (semver) Affected: 9.4.0 , ≤ 9.4.1 (semver) |
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CVE-2026-72657 (GCVE-0-2026-72657)
Vulnerability from nvd – Published: 2026-08-13 19:13 – Updated: 2026-08-13 20:29
VLAI
EPSS
VEX
Title
Authorization Bypass Through User-Controlled Key in Fleet Server Leading to Information Disclosure
Summary
Authorization Bypass Through User-Controlled Key (CWE-639) in Fleet Server can lead to information disclosure via Manipulating User-Controlled Variables (CAPEC-77). The authorization decision for artifact downloads relied on a client-supplied value that was persisted without being validated against the server-side record of the requesting agent's assignment. An authenticated party in possession of a valid enrolled agent credential could therefore retrieve a policy the agent is not assigned to.
Severity
6.5 (Medium)
SSVC
Exploitation: none
Automatable: no
Technical Impact: partial
CISA Coordinator · CISA-ADP (v2.0.3)
Decision recorded 2026-08-13 19:51 UTC
CWE
- CWE-639 - Authorization Bypass Through User-Controlled Key
Assigner
References
1 reference
Impacted products
1 product
| Vendor | Product | Version | |
|---|---|---|---|
| Elastic | Fleet Server |
Affected:
8.3.0 , ≤ 8.19.19
(semver)
Affected: 9.0.0 , ≤ 9.4.4 (semver) Affected: 9.5.0 (semver) |
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CVE-2026-56150 (GCVE-0-2026-56150)
Vulnerability from nvd – Published: 2026-07-01 16:26 – Updated: 2026-07-01 17:25
VLAI
EPSS
VEX
Title
Allocation of Resources Without Limits or Throttling in Fleet Server Leading to Denial of Service
Summary
Allocation of Resources Without Limits or Throttling (CWE-770) in Fleet Server can lead to a denial of service via Excessive Allocation (CAPEC-130). An attacker can submit a specially crafted request to an upload endpoint that causes excessive memory consumption, which may render Fleet Server unavailable.
Severity
6.5 (Medium)
SSVC
Exploitation: none
Automatable: no
Technical Impact: partial
CISA Coordinator · CISA-ADP (v2.0.3)
Decision recorded 2026-07-01 17:16 UTC
CWE
- CWE-770 - Allocation of Resources Without Limits or Throttling
Assigner
References
1 reference
Impacted products
1 product
| Vendor | Product | Version | |
|---|---|---|---|
| Elastic | Fleet Server |
Affected:
9.0.0 , ≤ 9.2.4
(semver)
Affected: 8.0.0 , ≤ 8.19.10 (semver) |
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CVE-2023-46667 (GCVE-0-2023-46667)
Vulnerability from nvd – Published: 2023-10-26 00:59 – Updated: 2024-09-09 15:53
VLAI
EPSS
VEX
Title
Fleet Server Insertion of Sensitive Information into Log File
Summary
An issue was discovered in Fleet Server >= v8.10.0 and < v8.10.3 where Agent enrolment tokens are being inserted into the Fleet Server’s log file in plain text. These enrolment tokens could allow someone to enrol an agent into an agent policy, and potentially use that to retrieve other secrets in the policy including for Elasticsearch and third-party services. Alternatively a threat actor could potentially enrol agents to the clusters and send arbitrary events to Elasticsearch.
Severity
8.1 (High)
SSVC
Exploitation: none
Automatable: no
Technical Impact: total
CISA Coordinator · CISA-ADP (v2.0.3)
Decision recorded 2024-09-09 15:47 UTC
CWE
- CWE-532 - Insertion of Sensitive Information into Log File
Assigner
References
2 references
Impacted products
2 products
| Vendor | Product | Version | |
|---|---|---|---|
| Elastic | Fleet Server |
Affected:
8.10.0 , < 8.10.3
(semver)
|
|
| elastic | fleet_server |
Affected:
8.10.0 , < 8.10.3
(semver)
cpe:2.3:a:elastic:fleet_server:*:*:*:*:*:*:*:* |
Date Public
2023-10-10 12:46
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CVE-2026-78587 (GCVE-0-2026-78587)
Vulnerability from cvelistv5 – Published: 2026-09-02 14:43 – Updated: 2026-09-02 15:58
VLAI
EPSS
VEX
Title
Incorrect Authorization in Fleet Server Leading to Denial of Service of Agent Upload Operations
Summary
Incorrect Authorization (CWE-863) in Fleet Server can lead to a denial of service of agent upload operations via Privilege Abuse (CAPEC-122). Fleet Server does not correctly verify session ownership during multi-part data upload operations, allowing any authenticated agent to interfere with the active upload sessions belonging to other enrolled agents.
Severity
SSVC
Exploitation: none
Automatable: no
Technical Impact: partial
CISA Coordinator · CISA-ADP (v2.0.3)
Decision recorded 2026-09-02 15:45 UTC
CWE
- CWE-863 - Incorrect Authorization
Assigner
References
1 reference
Impacted products
1 product
| Vendor | Product | Version | |
|---|---|---|---|
| Elastic | Fleet Server |
Affected:
8.0.0 , ≤ 8.19.15
(semver)
Affected: 9.0.0 , ≤ 9.3.4 (semver) Affected: 9.4.0 , ≤ 9.4.1 (semver) |
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CVE-2026-72657 (GCVE-0-2026-72657)
Vulnerability from cvelistv5 – Published: 2026-08-13 19:13 – Updated: 2026-08-13 20:29
VLAI
EPSS
VEX
Title
Authorization Bypass Through User-Controlled Key in Fleet Server Leading to Information Disclosure
Summary
Authorization Bypass Through User-Controlled Key (CWE-639) in Fleet Server can lead to information disclosure via Manipulating User-Controlled Variables (CAPEC-77). The authorization decision for artifact downloads relied on a client-supplied value that was persisted without being validated against the server-side record of the requesting agent's assignment. An authenticated party in possession of a valid enrolled agent credential could therefore retrieve a policy the agent is not assigned to.
Severity
6.5 (Medium)
SSVC
Exploitation: none
Automatable: no
Technical Impact: partial
CISA Coordinator · CISA-ADP (v2.0.3)
Decision recorded 2026-08-13 19:51 UTC
CWE
- CWE-639 - Authorization Bypass Through User-Controlled Key
Assigner
References
1 reference
Impacted products
1 product
| Vendor | Product | Version | |
|---|---|---|---|
| Elastic | Fleet Server |
Affected:
8.3.0 , ≤ 8.19.19
(semver)
Affected: 9.0.0 , ≤ 9.4.4 (semver) Affected: 9.5.0 (semver) |
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CVE-2026-56150 (GCVE-0-2026-56150)
Vulnerability from cvelistv5 – Published: 2026-07-01 16:26 – Updated: 2026-07-01 17:25
VLAI
EPSS
VEX
Title
Allocation of Resources Without Limits or Throttling in Fleet Server Leading to Denial of Service
Summary
Allocation of Resources Without Limits or Throttling (CWE-770) in Fleet Server can lead to a denial of service via Excessive Allocation (CAPEC-130). An attacker can submit a specially crafted request to an upload endpoint that causes excessive memory consumption, which may render Fleet Server unavailable.
Severity
6.5 (Medium)
SSVC
Exploitation: none
Automatable: no
Technical Impact: partial
CISA Coordinator · CISA-ADP (v2.0.3)
Decision recorded 2026-07-01 17:16 UTC
CWE
- CWE-770 - Allocation of Resources Without Limits or Throttling
Assigner
References
1 reference
Impacted products
1 product
| Vendor | Product | Version | |
|---|---|---|---|
| Elastic | Fleet Server |
Affected:
9.0.0 , ≤ 9.2.4
(semver)
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CVE-2023-46667 (GCVE-0-2023-46667)
Vulnerability from cvelistv5 – Published: 2023-10-26 00:59 – Updated: 2024-09-09 15:53
VLAI
EPSS
VEX
Title
Fleet Server Insertion of Sensitive Information into Log File
Summary
An issue was discovered in Fleet Server >= v8.10.0 and < v8.10.3 where Agent enrolment tokens are being inserted into the Fleet Server’s log file in plain text. These enrolment tokens could allow someone to enrol an agent into an agent policy, and potentially use that to retrieve other secrets in the policy including for Elasticsearch and third-party services. Alternatively a threat actor could potentially enrol agents to the clusters and send arbitrary events to Elasticsearch.
Severity
8.1 (High)
SSVC
Exploitation: none
Automatable: no
Technical Impact: total
CISA Coordinator · CISA-ADP (v2.0.3)
Decision recorded 2024-09-09 15:47 UTC
CWE
- CWE-532 - Insertion of Sensitive Information into Log File
Assigner
References
2 references
Impacted products
2 products
| Vendor | Product | Version | |
|---|---|---|---|
| Elastic | Fleet Server |
Affected:
8.10.0 , < 8.10.3
(semver)
|
|
| elastic | fleet_server |
Affected:
8.10.0 , < 8.10.3
(semver)
cpe:2.3:a:elastic:fleet_server:*:*:*:*:*:*:*:* |
Date Public
2023-10-10 12:46
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