Botan is a C++ cryptography library. From 1.11.34 until 3.13.0, the botan ocsp_check command requested an OCSP response from a certificate's Authority Information Access URL without verifying the response signature or authorizing the signer. A malicious responder or on-path attacker could return a matching and timely GOOD response with an empty, invalid, or unauthorized signature, causing a revoked certificate to produce exit status 0 and OCSP check OK output. Only the command-line interface is affected. This issue is fixed in version 3.13.0.
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Thu, 29 Oct 2026 17:30:00 +0000
| Type | Values Removed | Values Added |
|---|---|---|
| Description | Botan is a C++ cryptography library. From 1.11.34 until 3.13.0, the botan ocsp_check command requested an OCSP response from a certificate's Authority Information Access URL without verifying the response signature or authorizing the signer. A malicious responder or on-path attacker could return a matching and timely GOOD response with an empty, invalid, or unauthorized signature, causing a revoked certificate to produce exit status 0 and OCSP check OK output. Only the command-line interface is affected. This issue is fixed in version 3.13.0. | |
| Title | Botan: CLI utility `ocsp_check` accepts unauthenticated responses | |
| Weaknesses | CWE-347 | |
| References |
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| Metrics |
cvssV4_0
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Status: PUBLISHED
Assigner: GitHub_M
Published:
Updated: 2026-10-29T17:20:05.577Z
Reserved: 2026-10-28T19:20:05.017Z
Link: CVE-2026-118768
No data.
Status : Received
Published: 2026-10-29T18:17:28.997
Modified: 2026-10-29T18:17:28.997
Link: CVE-2026-118768
No data.
OpenCVE Enrichment
Updated: 2026-10-29T18:30:14Z
Weaknesses