CVE-2026-41076

NameCVE-2026-41076
DescriptionRT 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.
SourceCVE (at NVD; CERT, ENISA, LWN, oss-sec, fulldisc, Debian ELTS, Red Hat, Ubuntu, Gentoo, SUSE bugzilla/CVE, GitHub advisories/code/issues, web search, more)
ReferencesDSA-6324-1, DSA-6327-1

Vulnerable and fixed packages

The table below lists information on source packages.

Source PackageReleaseVersionStatus
request-tracker4 (PTS)bullseye4.4.4+dfsg-2+deb11u3vulnerable
bullseye (security)4.4.4+dfsg-2+deb11u5vulnerable
bookworm4.4.6+dfsg-1.1+deb12u3vulnerable
bookworm (security)4.4.6+dfsg-1.1+deb12u4fixed
request-tracker5 (PTS)bookworm5.0.3+dfsg-3~deb12u5vulnerable
bookworm (security)5.0.3+dfsg-3~deb12u6fixed
trixie5.0.7+dfsg-4+deb13u2vulnerable
trixie (security)5.0.7+dfsg-4+deb13u3fixed
forky, sid5.0.10+dfsg-1fixed

The information below is based on the following data on fixed versions.

PackageTypeReleaseFixed VersionUrgencyOriginDebian Bugs
request-tracker4sourcebookworm4.4.6+dfsg-1.1+deb12u4DSA-6327-1
request-tracker4source(unstable)(unfixed)
request-tracker5sourcebookworm5.0.3+dfsg-3~deb12u6DSA-6324-1
request-tracker5sourcetrixie5.0.7+dfsg-4+deb13u3DSA-6324-1
request-tracker5source(unstable)5.0.10+dfsg-1

Notes

https://github.com/bestpractical/rt/releases/tag/rt-5.0.10
Fixed by: https://github.com/bestpractical/rt/commit/c8120898d92adf1adae6fce11e0816d08afb395f (rt-5.0.10)

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