DEBIAN-CVE-2026-6331
- Source
- https://security-tracker.debian.org/tracker/CVE-2026-6331
- Import Source
- https://storage.googleapis.com/debian-osv/debian-cve-osv/DEBIAN-CVE-2026-6331.json
- JSON Data
- https://api.osv.dev/v1/vulns/DEBIAN-CVE-2026-6331
- Upstream
- Published
- 2026-06-25T22:17:03.010Z
- Modified
- 2026-07-15T03:00:13.039881117Z
- 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
Affected packages
Debian:11 / wolfssl
Package
- Name
- wolfssl
- Purl
- pkg:deb/debian/wolfssl?arch=source&distro=bullseye
Affected ranges
- Type
- ECOSYSTEM
- Events
-
Introduced0Unknown introduced version / All previous versions are affected
Affected versions
4.*
4.6.0-3
4.6.0+p1-0+deb11u1
4.6.0+p1-0+deb11u2
5.*
5.0.0-1~bpo11+1
5.0.0-1
5.1.1-1~bpo11+1
5.1.1-1
5.2.0-1
5.2.0-2~bpo11+1
5.2.0-2
5.5.3-1
5.5.3-2
5.5.3-3~bpo11+1
5.5.3-3
5.5.4-1
5.5.4-2~bpo11+1
5.5.4-2
5.5.4-2.1
5.6.4-1
5.6.4-2
5.6.6-1
5.6.6-1.1
5.6.6-1.2
5.6.6-1.3~exp1
5.6.6-1.3
5.7.0-0.1
5.7.0-0.2
5.7.0-0.3
5.7.2-0.1
5.7.2-0.2
5.7.2-0.3
5.7.2-0.4
5.8.2-1
5.8.2-1.1
5.8.2-1.2
5.8.4-1
5.9.0-0.1
5.9.0-0.2
5.9.1-0.1
5.9.2-1
Debian:12 / wolfssl
Package
- Name
- wolfssl
- Purl
- pkg:deb/debian/wolfssl?arch=source&distro=bookworm
Debian:13 / wolfssl
Package
- Name
- wolfssl
- Purl
- pkg:deb/debian/wolfssl?arch=source&distro=trixie
Affected ranges
- Type
- ECOSYSTEM
- Events
-
Introduced0Unknown introduced version / All previous versions are affected