CVE-2026-6331
- Source
- https://cve.org/CVERecord?id=CVE-2026-6331
- Import Source
- https://storage.googleapis.com/cve-osv-conversion/osv-output/CVE-2026-6331.json
- JSON Data
- https://api.osv.dev/v1/vulns/CVE-2026-6331
- Downstream
- Published
- 2026-06-25T20:56:25Z
- Modified
- 2026-10-28T02:31:02Z
- Severity
-
- 2.1 (Low) CVSS_V4 - CVSS:4.0/AV:L/AC:H/AT:P/PR:N/UI:N/VC:N/VI:L/VA:N/SC:N/SI:N/SA:N CVSS Calculator
- Summary
- HMAC zero-length tag forgery in EVP_DigestVerifyFinal
- 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.
- Database specific
{ "cna_assigner": "wolfSSL", "cwe_ids": [ "CWE-347" ], "osv_generated_from": "https://github.com/CVEProject/cvelistV5/tree/main/cves/2026/6xxx/CVE-2026-6331.json" }- References
Affected packages
Git / github.com/wolfssl/wolfssl
Affected ranges
- Type
- GIT
- Repo
- https://github.com/wolfssl/wolfssl
- Events
- Database specific
-
Show details
{ "extracted_events": [ { "range": [ { "introduced": "3.15.5" }, { "last_affected": "5.9.1" } ], "source": "AFFECTED_FIELD", "strategy": "StandardRange" }, { "cpe": "cpe:2.3:a:wolfssl:wolfssl:*:*:*:*:*:*:*:*", "range": [ { "introduced": "3.15.5" }, { "fixed": "5.9.2" } ], "source": "CPE_RANGE" } ] }
Affected versions
WCv5.*
WCv5.0-RC10
WCv5.0-RC11
WCv5.0-RC12
WCv5.0-RC9
Other
list
wolfEntropy1
wolfEntropy2d
v3.*
v3.15.5a
v3.15.6
v3.15.7-stable
v4.*
v4.0.0-stable
v4.1.0-stable
v4.2.0-stable
v4.2.0c
v4.3.0-stable
v4.4.0-stable
v4.5.0-stable
v4.6.0-stable
v4.7.0-stable
v4.7.1r
v4.8.0-stable
v5.*
v5.0.0-stable
v5.1.0-stable
v5.2.0-stable
v5.2.1
v5.3.0-stable
v5.4.0-stable
v5.5.0-stable
v5.5.1-stable
v5.5.2-stable
v5.5.3-stable
v5.5.4-stable
v5.6.0-stable
v5.6.2-stable
v5.6.3-stable
v5.6.4-stable
v5.6.6-stable
v5.7.0-stable
v5.7.2-stable
v5.7.4-stable
v5.7.6-stable
v5.8.0-stable
v5.8.2-stable
v5.8.4-stable
v5.9.0-stable
v5.9.1-stable