# CVE-2026-32883: botan3: Botan is a C++ cryptography library

CVE-2026-32883 is fixed in botan3 on 1 platform, first by DEBIAN-CVE-2026-32883, released March 30, 2026. It is not reported as exploited. Patch Radar priority: Routine.

- Web page: https://patchblox.com/security/cve/CVE-2026-32883
- Priority: Routine
- CVSS: 5.9 (medium)
- EPSS: 0.0016
- CISA KEV: not listed
- Exploited (vendor report): no
- Publicly disclosed: no
- Published: Mar 30, 2026

## Description

Botan is a C++ cryptography library. From version 3.0.0 to before version 3.11.0, during X509 path validation, OCSP responses were checked for an appropriate status code, but critically omitted verifying the signature of the OCSP response itself. This issue has been patched in version 3.11.0.

## Where it's fixed

| Platform | Product | Fixed in | Fix | Released |
|---|---|---|---|---|
| Linux | botan3 Debian 13.5 (trixie) | 3.11.0+dfsg-2 | [DEBIAN-CVE-2026-32883](https://patchblox.com/security/data/fix/linux/debian-cve-2026-32883.md) | Mar 30, 2026 |
| Linux | botan3 Debian 14 | 3.11.0+dfsg-2 | [DEBIAN-CVE-2026-32883](https://patchblox.com/security/data/fix/linux/debian-cve-2026-32883.md) | Mar 30, 2026 |

---

Data as of 2026-11-08T13:06:02Z 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 Patchblox finds out-of-date software on Windows, macOS and Linux and updates it through release rings: https://patchblox.com/demo

Free to use with attribution: show "Data: Patchblox Patch Radar" with a link to https://patchblox.com/security/patch-radar. Terms, including what needs a written agreement: https://patchblox.com/security/patch-radar/use-the-data

Product names, logos and trademarks shown on Patch Radar belong to their respective owners. They are used only to identify the software each security fix applies to and to help readers find their platform. Their use does not imply any affiliation with, or endorsement by, those owners, and Patchblox is not affiliated with any of them.