CVE-2026-42876

MEDIUM EPSS 11.8%
Published May 11, 20261mo ago · Modified Jun 17, 20262w ago
4.9 CVSS 3.1
Medium
Find Similar
Published May 11, 2026 1mo ago
Last Modified Jun 17, 2026 2w ago

Description

External Secrets Operator reads information from a third-party service and automatically injects the values as Kubernetes Secrets. Prior to 2.4.1, a user who only has permission to create ExternalSecret resources can cause the operator to create a Secret that Kubernetes will automatically populate with a long-lived token for the specified service account. This effectively allows the user to impersonate any service account in the namespace without needing direct create permissions on TokenRequest or Secrets of that type. This vulnerability is fixed in 2.4.1.

CVSS Details

Base Score
4.9
Exploitability
1.8
Impact
2.7
Vector string
CVSS:3.1/AV:N/AC:H/PR:L/UI:N/S:C/C:L/I:L/A:N
Attack Vector Network
Attack Complexity High
Privileges Required Low
User Interaction None
Scope Changed
Confidentiality Low
Integrity Low
Availability None

Threat Intelligence

EPSS Exploit Probability
11.8% percentile
Exploit & Patch Status
No Known Exploit
No Patch Available

Weaknesses 1

CWE-285

References 3

  • github.com https://github.com/external-secrets/external-secrets/commit/4ddd240af7fe88725d9857b9a0c198073502e288
  • github.com https://github.com/external-secrets/external-secrets/releases/tag/v2.4.1
  • github.com https://github.com/external-secrets/external-secrets/security/advisories/GHSA-fq7h-9x26-6j22

Remediation

No remediation data recorded yet

Check vendor advisories and the NVD entry for patch availability.