# CVE-2024-25189: libjwt: libjwt 1.15.3 uses strcmp (which is not constant time) to verify authentication, which makes it easier to bypass auth...

CVE-2024-25189 is fixed in libjwt on 1 platform, first by DEBIAN-CVE-2024-25189, released February 8, 2024. It is not reported as exploited. Patch Radar priority: Urgent.

- Web page: https://patchblox.com/security/cve/CVE-2024-25189
- Priority: Urgent
- CVSS: 9.8 (critical)
- EPSS: 0.0095
- CISA KEV: not listed
- Exploited (vendor report): no
- Publicly disclosed: no
- Published: Feb 8, 2024

## Description

libjwt 1.15.3 uses strcmp (which is not constant time) to verify authentication, which makes it easier to bypass authentication via a timing side channel.

## Where it's fixed

| Platform | Product | Fixed in | Fix | Released |
|---|---|---|---|---|
| Linux | libjwt Debian 12.15 (bookworm) | 1.10.2-1+deb12u1 | [DEBIAN-CVE-2024-25189](https://patchblox.com/security/data/fix/linux/debian-cve-2024-25189.md) | Feb 8, 2024 |
| Linux | libjwt Debian 13.5 (trixie) | 1.17.0-2 | [DEBIAN-CVE-2024-25189](https://patchblox.com/security/data/fix/linux/debian-cve-2024-25189.md) | Feb 8, 2024 |
| Linux | libjwt Debian 14 | 1.17.0-2 | [DEBIAN-CVE-2024-25189](https://patchblox.com/security/data/fix/linux/debian-cve-2024-25189.md) | Feb 8, 2024 |

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Data as of 2026-11-09T01:18:40Z 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 Patchblox finds out-of-date software on Windows, macOS and Linux and updates it through release rings: https://patchblox.com/demo

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