CVE-2026-43504

Unauthenticated XMPP Traffic Relay via Improper mod_proxy65 Access Control

Published May 1, 2026 CVSS 3.1 · 6.5 Medium EPSS < 1% KEV · Not listed
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.

Remediation

No solution or workaround provided in the CVE record

Tracking

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Advisories

Source ID Title
Debian DSA Debian DSA DSA-6252-1 prosody security update
History
Type Values Removed Values Added
Title Unauthenticated XMPP Traffic Relay via Improper mod_proxy65 Access Control
Type Values Removed Values Added
Metrics ssvc

{'options': {'Automatable': 'yes', 'Exploitation': 'none', 'Technical Impact': 'partial'}, 'version': '2.0.3'}

Type Values Removed Values Added
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.
First Time appeared Prosody
Prosody prosody
Weaknesses CWE-863
CPEs cpe:2.3:a:prosody:prosody:*:*:*:*:*:*:*:*
Vendors & Products Prosody
Prosody prosody
References
Metrics cvssV3_1

{'score': 6.5, 'vector': 'CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:L/A:L'}

Weaknesses

Sources

Status
PUBLISHED
Assigner
mitre
Published
Updated
May 1, 2026, 3:55 PM
Reserved
May 1, 2026, 2:40 PM
Status
Analyzed
Published
May 1, 2026, 3:16 PM
Modified
Nov 11, 2026, 11:10 PM