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.
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Thu, 25 Jun 2026 18:30:00 +0000
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ssvc
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Thu, 25 Jun 2026 17:30:00 +0000
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| Description | 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. | |
| Title | wolfSSL_PKCS7_verify() reports success for degenerate (certs-only) PKCS#7 with no signer | |
| Weaknesses | CWE-347 | |
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| Metrics |
cvssV4_0
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Status: PUBLISHED
Assigner: wolfSSL
Published:
Updated: 2026-06-25T17:57:46.226Z
Reserved: 2026-06-17T22:10:55.453Z
Link: CVE-2026-55961
Updated: 2026-06-25T17:57:42.648Z
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