# CVE-2026-5037: mxml: A vulnerability was determined in mxml up to 4.0.4

CVE-2026-5037 is fixed in mxml on 1 platform, first by DEBIAN-CVE-2026-5037, released March 29, 2026. It is not reported as exploited. Patch Radar priority: Routine.

- Web page: https://patchblox.com/security/cve/CVE-2026-5037
- Priority: Routine
- CVSS: n/a
- EPSS: 0.0013
- CISA KEV: not listed
- Exploited (vendor report): no
- Publicly disclosed: no
- Published: Mar 29, 2026

## Description

A vulnerability was determined in mxml up to 4.0.4. This issue affects the function index_sort of the file mxml-index.c of the component mxmlIndexNew. Executing a manipulation of the argument tempr can lead to stack-based buffer overflow. The attack is restricted to local execution. The exploit has been publicly disclosed and may be utilized. This patch is called 6e27354466092a1ac65601e01ce6708710bb9fa5. A patch should be applied to remediate this issue.

## Where it's fixed

| Platform | Product | Fixed in | Fix | Released |
|---|---|---|---|---|
| Linux | mxml Debian 12.15 (bookworm) | 3.3.1-1+deb13u1~deb12u1 | [DEBIAN-CVE-2026-5037](https://patchblox.com/security/data/fix/linux/debian-cve-2026-5037.md) | Mar 29, 2026 |
| Linux | mxml Debian 13.5 (trixie) | 3.3.1-1+deb13u1 | [DEBIAN-CVE-2026-5037](https://patchblox.com/security/data/fix/linux/debian-cve-2026-5037.md) | Mar 29, 2026 |
| Linux | mxml Debian 14 | 4.0.4-4 | [DEBIAN-CVE-2026-5037](https://patchblox.com/security/data/fix/linux/debian-cve-2026-5037.md) | Mar 29, 2026 |

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Data as of 2026-11-08T06:59:42Z 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 Patchblox finds out-of-date software on Windows, macOS and Linux and updates it through release rings: https://patchblox.com/demo

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