ALPINE-CVE-2026-6331
- Source
- https://security.alpinelinux.org/vuln/CVE-2026-6331
- Import Source
- https://storage.googleapis.com/cve-osv-conversion/alpine/ALPINE-CVE-2026-6331.json
- JSON Data
- https://api.osv.dev/v1/vulns/ALPINE-CVE-2026-6331
- Upstream
- Published
- 2026-06-25T22:17:03Z
- Modified
- 2026-11-03T06:33:05Z
- Severity
-
- 7.5 (High) CVSS_V3 - CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:H/A:N CVSS Calculator
- Summary
- [none]
- Details
-
HMAC zero-length tag forgery in EVP_DigestVerifyFinal, where a zero-length tag could be accepted as valid during HMAC verification. In the OpenSSL-compatibility HMAC verify path the supplied signature length was only checked as not exceeding the MAC length, so a zero-length or otherwise truncated tag could pass verification. The fix requires the supplied tag length to exactly equal the MAC length and rejects a zero-length MAC, so a forged short or empty tag is no longer accepted.
- References