CVE-2026-43505 Details
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.
A vulnerability allowing unauthenticated use of the SOCKS5 proxy module (mod_proxy65) has been identified in Prosody versions prior to 0.12.6 and 13.0.0 prior to 13.0.5. The issue arises from improper access control in mod_proxy65, which can lead to unauthorized relaying of traffic. This vulnerability is present in all deployments with mod_proxy65 enabled, although it is not activated by default.
Users can upgrade to Prosody 0.12.6 or 13.0.5 to address this vulnerability. If mod_proxy65 is not needed, it can be disabled, although this may affect certain file transfer functionalities.
Metrics
CVSS 4.0 Severity and Vector Strings:
No CVSS 4.0 data is available for this CVE.
CVSS 3.x Severity and Vector Strings:
No data available for CVSS Version 2.0 on this CVE.
CISA-ADP
Assessed May 1, 2026References to Advisories, Solutions, and Tools
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| URL | Source(s) | Tag(s) |
|---|---|---|
| https://prosody.im/security/advisory_735dd9d3/ | [email protected] | MitigationPatchVendor Advisory |
| https://www.openwall.com/lists/oss-security/2026/05/01/5 | [email protected] | Mailing ListPatchThird Party Advisory |
Weakness Enumeration
| CWE-ID | CWE Name | Source |
|---|---|---|
| CWE-420 | Unprotected Alternate Channel | [email protected] |
Affected Products
| Product | Versions |
|---|---|
| prosody prosody | < 0.12.6 >= 13.0.0, < 13.0.5 |
CPE
Remediation
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Change History
4 change records found show changes
| Date | Action | Recorded By |
|---|---|---|
| Jun 17, 2026 | CVE Modified | [email protected] |
| Jun 17, 2026 | CVE Modified | CISA-ADP |
| May 1, 2026 | Initial Analysis | [email protected] |
| May 1, 2026 | New CVE Received | [email protected] |