CVE-2026-43504
Prosody Mod Proxy65 Authentication Bypass Vulnerability
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.
INFO
Published Date :
May 1, 2026, 3:16 p.m.
Last Modified :
May 1, 2026, 5:15 p.m.
Remotely Exploit :
Yes !
Source :
[email protected]
CVSS Scores
| Score | Version | Severity | Vector | Exploitability Score | Impact Score | Source |
|---|---|---|---|---|---|---|
| CVSS 3.1 | MEDIUM | 8254265b-2729-46b6-b9e3-3dfca2d5bfca | ||||
| CVSS 3.1 | MEDIUM | [email protected] |
Solution
- Update Prosody to version 0.12.6 or later.
- Update Prosody to version 13.0.5 or later.
- Disable mod_proxy65 if not required.
References to Advisories, Solutions, and Tools
Here, you will find a curated list of external links that provide in-depth
information, practical solutions, and valuable tools related to
CVE-2026-43504.
| URL | Resource |
|---|---|
| https://prosody.im/security/advisory_735dd9d3/ | Mitigation Patch Vendor Advisory |
| https://www.openwall.com/lists/oss-security/2026/05/01/5 | Mailing List Patch Third Party Advisory |
CWE - Common Weakness Enumeration
While CVE identifies
specific instances of vulnerabilities, CWE categorizes the common flaws or
weaknesses that can lead to vulnerabilities. CVE-2026-43504 is
associated with the following CWEs:
Common Attack Pattern Enumeration and Classification (CAPEC)
Common Attack Pattern Enumeration and Classification
(CAPEC)
stores attack patterns, which are descriptions of the common attributes and
approaches employed by adversaries to exploit the CVE-2026-43504
weaknesses.
We scan GitHub repositories to detect new proof-of-concept exploits. Following list is a collection of public exploits and proof-of-concepts, which have been published on GitHub (sorted by the most recently updated).
Results are limited to the first 15 repositories due to potential performance issues.
The following list is the news that have been mention
CVE-2026-43504 vulnerability anywhere in the article.
The following table lists the changes that have been made to the
CVE-2026-43504 vulnerability over time.
Vulnerability history details can be useful for understanding the evolution of a vulnerability, and for identifying the most recent changes that may impact the vulnerability's severity, exploitability, or other characteristics.
-
Initial Analysis by [email protected]
May. 01, 2026
Action Type Old Value New Value Added CPE Configuration OR *cpe:2.3:a:prosody:prosody:*:*:*:*:*:*:*:* versions up to (excluding) 0.12.6 *cpe:2.3:a:prosody:prosody:*:*:*:*:*:*:*:* versions from (including) 13.0.0 up to (excluding) 13.0.5 Added Reference Type MITRE: https://prosody.im/security/advisory_735dd9d3/ Types: Mitigation, Patch, Vendor Advisory Added Reference Type MITRE: https://www.openwall.com/lists/oss-security/2026/05/01/5 Types: Mailing List, Patch, Third Party Advisory -
New CVE Received by [email protected]
May. 01, 2026
Action Type Old Value New Value 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. Added CVSS V3.1 AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:L/A:L Added CWE CWE-863 Added Reference https://prosody.im/security/advisory_735dd9d3/ Added Reference https://www.openwall.com/lists/oss-security/2026/05/01/5