CVE-2026-41076
RT: LDAP authentication bypass via empty password
Description
RT is an open source, enterprise-grade issue and ticket tracking system. Versions 5.0.9 and prior in addition to 6.0.0 through 6.0.2 contain an authentication bypass vulnerability in RT installations that use LDAP/AD for user authentication. Under certain LDAP server configurations, an attacker may be able to authenticate as any LDAP-backed RT user without supplying valid credentials. This issue has been fixed in versions 5.0.10 and 6.0.3. If developers are unable to upgrade immediately, they can temporarily work around this issue by reviewing their LDAP server's authentication policy to ensure it rejects unauthenticated bind attempts. Upgrading RT remains the recommended fix.
INFO
Published Date :
May 22, 2026, 10:16 p.m.
Last Modified :
July 23, 2026, 11:10 a.m.
Remotely Exploit :
Yes !
Source :
[email protected]
CVSS Scores
| Score | Version | Severity | Vector | Exploitability Score | Impact Score | Source |
|---|---|---|---|---|---|---|
| CVSS | 134c704f-9b21-4f2e-91b3-4a467353bcc0 | |||||
| CVSS 3.1 | HIGH | MITRE-CVE | ||||
| CVSS 3.1 | HIGH | [email protected] |
Solution
- Upgrade RT to a fixed version.
- Review LDAP server policy for security.
- Ensure LDAP rejects unauthenticated binds.
- Apply vendor-provided patches for RT.
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-2026-41076.
CWE - Common Weakness Enumeration
While CVE identifies
specific instances of vulnerabilities, CWE categorizes the common flaws or
weaknesses that can lead to vulnerabilities. CVE-2026-41076 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-2026-41076
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-2026-41076 vulnerability anywhere in the article.
The following table lists the changes that have been made to the
CVE-2026-41076 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.
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CVE Translated by [email protected]
Jul. 23, 2026
Action Type Old Value New Value Added Translation Title: RT de bestpractical, Description: RT es un sistema de seguimiento de problemas y tickets de código abierto, de nivel empresarial. Las versiones 5.0.9 y anteriores, además de la 6.0.0 hasta la 6.0.2, contienen una vulnerabilidad de omisión de autenticación en instalaciones de RT que utilizan LDAP/AD para la autenticación de usuarios. Bajo ciertas configuraciones de servidor LDAP, un atacante podría autenticarse como cualquier usuario de RT respaldado por LDAP sin proporcionar credenciales válidas. Este problema ha sido solucionado en las versiones 5.0.10 y 6.0.3. Si los desarrolladores no pueden actualizar de inmediato, pueden solucionar temporalmente este problema revisando la política de autenticación de su servidor LDAP para asegurarse de que rechace los intentos de enlace no autenticados. Actualizar RT sigue siendo la solución recomendada. -
CVE Modified by [email protected]
Jun. 17, 2026
Action Type Old Value New Value Added Affected [{'vendor': 'bestpractical', 'product': 'rt', 'versions': [{'status': 'affected', 'version': '< 5.0.10'}, {'status': 'affected', 'version': '>= 6.0.0, < 6.0.3'}]}] -
CVE Modified by 134c704f-9b21-4f2e-91b3-4a467353bcc0
Jun. 17, 2026
Action Type Old Value New Value Added SSVC {'id': 'CVE-2026-41076', 'role': 'CISA Coordinator', 'options': [{'exploitation': 'none'}, {'automatable': 'no'}, {'technicalImpact': 'total'}], 'version': '2.0.3', 'timestamp': '2026-05-27T00:00:00+00:00'} -
New CVE Received by [email protected]
May. 22, 2026
Action Type Old Value New Value Added Description RT is an open source, enterprise-grade issue and ticket tracking system. Versions 5.0.9 and prior in addition to 6.0.0 through 6.0.2 contain an authentication bypass vulnerability in RT installations that use LDAP/AD for user authentication. Under certain LDAP server configurations, an attacker may be able to authenticate as any LDAP-backed RT user without supplying valid credentials. This issue has been fixed in versions 5.0.10 and 6.0.3. If developers are unable to upgrade immediately, they can temporarily work around this issue by reviewing their LDAP server's authentication policy to ensure it rejects unauthenticated bind attempts. Upgrading RT remains the recommended fix. Added CVSS V3.1 AV:N/AC:H/PR:N/UI:N/S:U/C:H/I:H/A:H Added CWE CWE-287 Added Reference https://github.com/bestpractical/rt/releases/tag/rt-5.0.10 Added Reference https://github.com/bestpractical/rt/releases/tag/rt-6.0.3 Added Reference https://github.com/bestpractical/rt/security/advisories/GHSA-3w28-fmcr-mjjx