# CVE-2026-118768: botan3: Botan is a C++ cryptography library

CVE-2026-118768 is fixed in botan3 on 1 platform by DEBIAN-CVE-2026-118768 (version 3.13.0+dfsg-2), released October 31, 2026. It is not reported as exploited. Patch Radar priority: Routine.

- Web page: https://patchblox.com/security/cve/CVE-2026-118768
- Priority: Routine
- CVSS: n/a
- EPSS: 0.0007
- CISA KEV: not listed
- Exploited (vendor report): no
- Publicly disclosed: no
- Published: Oct 29, 2026

## 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.

## Where it's fixed

| Platform | Product | Fixed in | Fix | Released |
|---|---|---|---|---|
| Linux | botan3 Debian 14 | 3.13.0+dfsg-2 | [DEBIAN-CVE-2026-118768](https://patchblox.com/security/data/fix/linux/debian-cve-2026-118768.md) | Oct 31, 2026 |

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Data as of 2026-11-10T01:44:33Z UTC. Source: Patchblox Patch Radar (https://patchblox.com/security/patch-radar). Patchblox finds out-of-date software on Windows, macOS and Linux and updates it through release rings: https://patchblox.com/demo

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