# CVE-2026-41493: yard: YARD is a Ruby Documentation tool

CVE-2026-41493 is fixed in yard on 1 platform, first by yard 0.9.12-2ubuntu0.1~esm2, released May 8, 2026. It is not reported as exploited. Patch Radar priority: Routine.

- Web page: https://patchblox.com/security/cve/CVE-2026-41493
- Priority: Routine
- CVSS: n/a (Medium)
- EPSS: 0.0039
- CISA KEV: not listed
- Exploited (vendor report): no
- Publicly disclosed: no
- Published: May 8, 2026

## Description

YARD is a Ruby Documentation tool. Prior to version 0.9.42, a path traversal vulnerability was discovered in YARD when using yard server to serve documentation. This bug would allow unsanitized HTTP requests to access arbitrary files on the machine of a yard server host under certain conditions. This issue has been patched in version 0.9.42.

## Where it's fixed

| Platform | Product | Fixed in | Fix | Released |
|---|---|---|---|---|
| Linux | yard Ubuntu 18.04.6 LTS (bionic) | 0.9.12-2ubuntu0.1~esm2 | [yard 0.9.12-2ubuntu0.1~esm2](https://patchblox.com/security/data/fix/linux/ubuntu-bionic-yard-0.9.12-2ubuntu0.1-esm2.md) | May 8, 2026 |
| Linux | yard Ubuntu 20.04 LTS (focal) | 0.9.24-1+deb11u1ubuntu0.1~esm1 | [yard 0.9.24-1+deb11u1ubuntu0.1~esm1](https://patchblox.com/security/data/fix/linux/ubuntu-focal-yard-0.9.24-1-deb11u1ubuntu0.1-esm1.md) | May 8, 2026 |
| Linux | yard Ubuntu 22.04.1 LTS (jammy) | 0.9.26-1ubuntu0.1+esm1 | [yard 0.9.26-1ubuntu0.1+esm1](https://patchblox.com/security/data/fix/linux/ubuntu-jammy-yard-0.9.26-1ubuntu0.1-esm1.md) | May 8, 2026 |
| Linux | yard Ubuntu 24.04.5 LTS (noble) | 0.9.36-1ubuntu0.1~esm1 | [yard 0.9.36-1ubuntu0.1~esm1](https://patchblox.com/security/data/fix/linux/ubuntu-noble-yard-0.9.36-1ubuntu0.1-esm1.md) | May 8, 2026 |
| Linux | yard Ubuntu 26.04.1 LTS (resolute) | 0.9.38-1ubuntu0.1~esm1 | [yard 0.9.38-1ubuntu0.1~esm1](https://patchblox.com/security/data/fix/linux/ubuntu-resolute-yard-0.9.38-1ubuntu0.1-esm1.md) | May 8, 2026 |

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Data as of 2026-11-08T19:12:23Z 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 Patchblox finds out-of-date software on Windows, macOS and Linux and updates it through release rings: https://patchblox.com/demo

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