CVE-2026-43504

medium

Published 2026-05-01 · Modified 2026-05-01

CVSS v3

6.5

CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:L/A:L

CVSS v2

—

VIR risk

6.5

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 a paused scenario, relaying of unauthenticated traffic can occur.

Predictions

Exploit likelihood

75%

Patch ETA

—

Heuristic predictions, AS-IS, for prioritization only.

Mitigations

vendor Authored 2026-05-27

Vendor advisory: debian — https://security-tracker.debian.org/tracker/CVE-2026-43504

vendor Authored 2026-05-27

Vendor advisory: cve@mitre.org — https://www.openwall.com/lists/oss-security/2026/05/01/5

vendor Authored 2026-05-27

Vendor advisory: cve@mitre.org — https://prosody.im/security/advisory_735dd9d3/

OS impact

OS	Version	Status	Fixed in
debian	bookworm	fixed	`0.12.3-1+deb12u1`
debian	bullseye	affected
debian	forky	fixed	`13.0.5-1`
debian	sid	fixed	`13.0.5-1`
debian	trixie	fixed	`13.0.1-1+deb131u`

Application impact

Vendor	Product	Versions	Fixed
prosody	prosody	`{"endExcluding":"0.12.6"}`	`0.12.6`

References

CWEs

CWE-863

Verify integrity in audit chain (admin only). AS-IS.