# CVE-2026-43505: prosody: An issue was discovered in Prosody before 0.12.6 and 1.0.0 through 13.0.0 before 13.0.5, when mod_proxy65 is enabled

CVE-2026-43505 is fixed in prosody on 1 platform, first by DEBIAN-CVE-2026-43505, released May 15, 2026. It is not reported as exploited. Patch Radar priority: Routine.

- Web page: https://patchblox.com/security/cve/CVE-2026-43505
- Priority: Routine
- CVSS: 6.5 (medium)
- EPSS: 0.0020
- CISA KEV: not listed
- Exploited (vendor report): no
- Publicly disclosed: no
- Published: May 1, 2026

## Description

An issue was discovered in Prosody before 0.12.6 and 1.0.0 through 13.0.0 before 13.0.5, when mod_proxy65 is enabled. Because mod_proxy65 mishandles access control in the activation scenario, relaying of unauthenticated traffic can occur.

## Where it's fixed

| Platform | Product | Fixed in | Fix | Released |
|---|---|---|---|---|
| Linux | prosody Debian 12.15 (bookworm) | 0.12.3-1+deb12u1 | [DEBIAN-CVE-2026-43505](https://patchblox.com/security/data/fix/linux/debian-cve-2026-43505.md) | May 15, 2026 |
| Linux | prosody Debian 13.5 (trixie) | 13.0.1-1+deb131u | [DEBIAN-CVE-2026-43505](https://patchblox.com/security/data/fix/linux/debian-cve-2026-43505.md) | May 15, 2026 |
| Linux | prosody Debian 14 | 13.0.5-1 | [DEBIAN-CVE-2026-43505](https://patchblox.com/security/data/fix/linux/debian-cve-2026-43505.md) | May 15, 2026 |

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Data as of 2026-11-09T07:25:28Z 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 Patchblox finds out-of-date software on Windows, macOS and Linux and updates it through release rings: https://patchblox.com/demo

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