CVE-2026-55961
wolfSSL_PKCS7_verify() returning success for a degenerate (certs-only) PKCS#7 object that contains no signer. Such an object has empty signerInfos, so the underlying signed-data verification succeeds without authenticating any content. The compatibility-layer verify path now rejects the object when no signer signature has actually been verified, so a PKCS#7 carrying no valid signature is no longer reported as verified. This is enforced regardless of the PKCS7_NOVERIFY flag, which only suppresses signer certificate chain validation and was never intended to waive the requirement that a signature exist. Only affects OpenSSL compatibility builds that call the PKCS7_verify() compatibility API on potentially degenerate PKCS#7 bundles.
- Affected products
- Wolfssl
- Wolfssl
- < 5.9.2
- CVSS 4.0
- 8.2 HIGH
- CVSS 3.1
- 7.5 HIGH
- EPSS
- 0.1% (4th percentile)
- Weakness
- CWE-347
- NVD status
- Analyzed
- Published
- 2026-06-25
No indexed exploits for CVE-2026-55961 yet
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No exploit for CVE-2026-55961 has been indexed yet. Our index is built from live traffic and upstream syncs, so this page can only say what it knows — not that no exploit exists.