CVE-2026-41076

EUVD-2026-31504
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.
ProviderTypeBase ScoreAtk. VectorAtk. ComplexityPriv. RequiredVector
GitHub_MCNA
8.1 HIGH
NETWORK
HIGH
NONE
CVSS:3.1/AV:N/AC:H/PR:N/UI:N/S:U/C:H/I:H/A:H
Base Score
CVSS 3.x
EPSS Score
Percentile: 31%
Early Detection
Affected products identified ahead of NVD analysis through intelligence sources.
VendorProductVersionSource
bestpracticalrt
𝑥
< 5.0.10
CNA
Debian logo
Debian Releases
Debian Product
Codename
request-tracker4
bookworm
vulnerable
bookworm (security)
4.4.6+dfsg-1.1+deb12u4
fixed
bullseye
vulnerable
bullseye (security)
vulnerable
request-tracker5
bookworm
vulnerable
bookworm (security)
5.0.3+dfsg-3~deb12u6
fixed
forky
5.0.10+dfsg-3
fixed
sid
5.0.10+dfsg-3
fixed
trixie
vulnerable
trixie (security)
5.0.7+dfsg-4+deb13u3
fixed
Common Weakness Enumeration
References
https://github.com/bestpractical/rt/releases/tag/rt-5.0.10
https://github.com/bestpractical/rt/releases/tag/rt-6.0.3
https://github.com/bestpractical/rt/security/advisories/GHSA-3w28-fmcr-mjjx