CVE-2026-88647
ADVISORY - nistSummary
GnuTLS v3.8.13 can perhaps unexpectedly trust a certificate on the basis of Common Name when Subject Alternative Name has an SRV otherName (1.3.6.1.5.5.7.8.7) whose value is an OCTET STRING. NOTE: the Supplier does not consider this an actionable security vulnerability because of its "threat model doesn't consider attacks only possible by modifying anything within the trust boundary (private keys, trusted certificate authorities and their issued certificates including intermediate CAs, etc.)" policy.
EPSS Score: 0.00208 (0.109)
Common Weakness Enumeration (CWE)
ADVISORY - nist
Improper Validation of Certificate with Host Mismatch
ADVISORY - redhat
Improper Certificate Validation
NIST
CREATED
UPDATED
ADVISORY IDCVE-2026-88647
EXPLOITABILITY SCORE
2.2
EXPLOITS FOUND
-
COMMON WEAKNESS ENUMERATION (CWE)
CVSS SCORE
6.5mediumDebian
CREATED
UPDATED
ADVISORY IDCVE-2026-88647
EXPLOITABILITY SCORE
-
EXPLOITS FOUND
-
COMMON WEAKNESS ENUMERATION (CWE)-
CVSS SCORE
N/AlowUbuntu
CREATED
UPDATED
ADVISORY IDCVE-2026-88647
EXPLOITABILITY SCORE
-
EXPLOITS FOUND
-
COMMON WEAKNESS ENUMERATION (CWE)-
CVSS SCORE
N/AmediumRed Hat
CREATED
UPDATED
ADVISORY IDCVE-2026-88647
EXPLOITABILITY SCORE
2.2
EXPLOITS FOUND
-
COMMON WEAKNESS ENUMERATION (CWE)