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CVE-2026-41076

RT: LDAP authentication bypass via empty password

Published: May 22, 2026Updated: May 26, 2026 Sources: CVE List NVDCWE-287
NVD MITRE
8.1CVSSHIGH
EPSS Score
0.5%
Top 62.4%
CISA KEV
Not in KEV
Exploits
No Known Exploits
Remediation
No Fix Available

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.

CVSS Vector Breakdown

AV:NAC:HPR:NUI:NS:UC:HI:HA:H
Exploitability
AV:NAttack Vector
Network
AC:HAttack Complexity
High
PR:NPrivileges Required
None
UI:NUser Interaction
None
Scope
S:UScope
Unchanged
Impact
C:HConfidentiality
High
I:HIntegrity
High
A:HAvailability
High
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Weaknesses

CWE-287

Affected Products

rtbestpractical
On-prem
Enterprise Software / itsm-monitoring
bestpracticalcommercialEnterprise Softwareaka request tracker, request tracker for incident response, rt

Attack Graph

Products CVE Techniques Tactics

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Exploitability

No known exploits, KEV entries, or remediation guidance available for this vulnerability yet.

MITRE ATT&CK

2 techniques
Initial Access
View detailed technique mapping

References

https://github.com/bestpractical/rt/releases/tag/rt-5.0.10
github.com
https://github.com/bestpractical/rt/releases/tag/rt-6.0.3
github.com
https://github.com/bestpractical/rt/security/advisories/GHSA-3w28-fmcr-mjjx
github.com

Timeline

Published
May 22, 2026
Last Updated
May 26, 2026

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