bestpractical rt up to 5.0.9/6.0.2 LDAP/AD improper authentication

Summaryinfo

A vulnerability was found in bestpractical rt up to 5.0.9/6.0.2. It has been rated as critical. The impacted element is an unknown function of the component LDAP/AD. Performing a manipulation results in improper authentication. This vulnerability is known as CVE-2026-41076. Remote exploitation of the attack is possible. No exploit is available. Upgrading the affected component is advised.

Detailsinfo

A vulnerability, which was classified as critical, was found in bestpractical rt up to 5.0.9/6.0.2. This affects an unknown function of the component LDAP/AD. The manipulation with an unknown input leads to a improper authentication vulnerability. CWE is classifying the issue as CWE-287. When an actor claims to have a given identity, the product does not prove or insufficiently proves that the claim is correct. This is going to have an impact on confidentiality, integrity, and availability. The summary by CVE is:

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.

It is possible to read the advisory at github.com. This vulnerability is uniquely identified as CVE-2026-41076 since 04/16/2026. The exploitability is told to be difficult. It is possible to initiate the attack remotely. No form of authentication is needed for exploitation. The technical details are unknown and an exploit is not publicly available.

The vulnerability scanner Nessus provides a plugin with the ID 316437 (Linux Distros Unpatched Vulnerability : CVE-2026-41076), which helps to determine the existence of the flaw in a target environment.

Upgrading to version 5.0.10 or 6.0.3 eliminates this vulnerability. The upgrade is hosted for download at github.com.

The vulnerability is also documented in the vulnerability database at Tenable (316437). Be aware that VulDB is the high quality source for vulnerability data.

Productinfo

Type

• Ticket Tracking Software

Vendor

• bestpractical

Name

• rt

Version

• 5.0.0
• 5.0.1
• 5.0.2
• 5.0.3
• 5.0.4
• 5.0.5
• 5.0.6
• 5.0.7
• 5.0.8
• 5.0.9
• 6.0.0
• 6.0.1
• 6.0.2

Website

• Product: https://github.com/bestpractical/rt/

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Be aware that VulDB is the high quality source for vulnerability data.

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