HIGHCVSS v3.1 7.7Vulnerability
CVE-2026-122318
Kyverno before 1.19.2 contains an authentication bypass in matchCertificateData that skips verifyImages subject and subjectRegExp checks when the signing certificate has no Subject Alternative Name. Attackers holding a leaf certificate from a configured private trust root can omit the SAN, set the expected Fulcio issuer OID, and sign malicious images that are admitted despite signer pinning.
Properties
- Severity
- HIGH
- Nvd fetched at
- 2026-11-05T05:51:13.658545+00:00
- Cvss severity
- HIGH
- Cvss score
- 7.7
- Retrieved at
- 2026-11-05T05:52:17+00:00
- Score
- 7.7
- Cvss version
- 3.1
- Last source
- NVD
- Cve id
- CVE-2026-122318
- Cvss vector
- CVSS:3.1/AV:N/AC:H/PR:L/UI:N/S:C/C:L/I:H/A:L
- First seen by Signal
- 2026-11-05T05:47:49+00:00
- Vector
- CVSS:3.1/AV:N/AC:H/PR:L/UI:N/S:C/C:L/I:H/A:L
- Published at
- 2026-11-05T03:17:24.523
- Last modified
- 2026-11-05T03:17:24.523
Related Entities (1)
HAS_WEAKNESS (1)
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