CVE-2026-43504: Prosody

Medium severity, CVSS 6.5. EPSS: 0.3% chance of exploitation in the next 30 days.

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.

Affected products

• Prosody Prosody: before 0.12.6 (fixed in 0.12.6); from 13.0.0, before 13.0.5 (fixed in 13.0.5)

Published 2026-05-01. Last modified 2026-06-17.