# CVE-2026-41076: request-tracker5: RT is an open source, enterprise-grade issue and ticket tracking system CVE-2026-41076 is fixed in 23 products on 1 platform, first by request-tracker5 5.0.1+dfsg-1ubuntu1+esm2, released May 22, 2026. It is not reported as exploited. Patch Radar priority: High. - Web page: https://patchblox.com/security/cve/CVE-2026-41076 - Priority: High - CVSS: 8.1 (high) - EPSS: 0.0039 - CISA KEV: not listed - Exploited (vendor report): no - Publicly disclosed: no - Published: May 22, 2026 ## 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. ## Where it's fixed | Platform | Product | Fixed in | Fix | Released | |---|---|---|---|---| | Linux | perl-Badger Fedora 43 | 0.16-2.fc43 | [FEDORA-2026-04F78841EC](https://patchblox.com/security/data/fix/linux/fedora-2026-04f78841ec.md) | Nov 7, 2026 | | Linux | perl-CLI-Simple Fedora 43 | 2.2.5-1.fc43 | [FEDORA-2026-04F78841EC](https://patchblox.com/security/data/fix/linux/fedora-2026-04f78841ec.md) | Nov 7, 2026 | | Linux | perl-CSS-Inliner Fedora 43 | 4027-1.fc43 | [FEDORA-2026-04F78841EC](https://patchblox.com/security/data/fix/linux/fedora-2026-04f78841ec.md) | Nov 7, 2026 | | Linux | perl-Encoding-FixLatin Fedora 43 | 1.04-2.fc43 | [FEDORA-2026-04F78841EC](https://patchblox.com/security/data/fix/linux/fedora-2026-04f78841ec.md) | Nov 7, 2026 | | Linux | perl-HTML-Query Fedora 43 | 0.09-2.fc43 | [FEDORA-2026-04F78841EC](https://patchblox.com/security/data/fix/linux/fedora-2026-04f78841ec.md) | Nov 7, 2026 | | Linux | perl-Markdown-Render Fedora 43 | 2.0.4-1.fc43 | [FEDORA-2026-04F78841EC](https://patchblox.com/security/data/fix/linux/fedora-2026-04f78841ec.md) | Nov 7, 2026 | | Linux | perl-RT-Test Fedora 43 | 5.0.10-1.fc43 | [FEDORA-2026-04F78841EC](https://patchblox.com/security/data/fix/linux/fedora-2026-04f78841ec.md) | Nov 7, 2026 | | Linux | perl-Text-Markdown-Discount Fedora 43 | 0.18-2.fc43 | [FEDORA-2026-04F78841EC](https://patchblox.com/security/data/fix/linux/fedora-2026-04f78841ec.md) | Nov 7, 2026 | | Linux | perl-Text-Markdown-Discount-debuginfo Fedora 43 | 0.18-2.fc43 | [FEDORA-2026-04F78841EC](https://patchblox.com/security/data/fix/linux/fedora-2026-04f78841ec.md) | Nov 7, 2026 | | Linux | perl-Text-Markdown-Discount-debugsource Fedora 43 | 0.18-2.fc43 | [FEDORA-2026-04F78841EC](https://patchblox.com/security/data/fix/linux/fedora-2026-04f78841ec.md) | Nov 7, 2026 | | Linux | request-tracker4 Debian 12.15 (bookworm) | 4.4.6+dfsg-1.1+deb12u4 | [DEBIAN-CVE-2026-41076](https://patchblox.com/security/data/fix/linux/debian-cve-2026-41076.md) | May 27, 2026 | | Linux | request-tracker5 Debian 12.15 (bookworm) | 5.0.3+dfsg-3~deb12u6 | [DEBIAN-CVE-2026-41076](https://patchblox.com/security/data/fix/linux/debian-cve-2026-41076.md) | May 27, 2026 | | Linux | request-tracker5 Debian 13.5 (trixie) | 5.0.7+dfsg-4+deb13u3 | [DEBIAN-CVE-2026-41076](https://patchblox.com/security/data/fix/linux/debian-cve-2026-41076.md) | May 27, 2026 | | Linux | request-tracker5 Debian 14 | 5.0.10+dfsg-1 | [DEBIAN-CVE-2026-41076](https://patchblox.com/security/data/fix/linux/debian-cve-2026-41076.md) | May 27, 2026 | | Linux | request-tracker5 Ubuntu 22.04.1 LTS (jammy) | 5.0.1+dfsg-1ubuntu1+esm2 | [request-tracker5 5.0.1+dfsg-1ubuntu1+esm2](https://patchblox.com/security/data/fix/linux/ubuntu-jammy-request-tracker5-5.0.1-dfsg-1ubuntu1-esm2.md) | May 22, 2026 | | Linux | request-tracker5 Ubuntu 24.04.5 LTS (noble) | 5.0.5+dfsg-2ubuntu0.1~esm2 | [request-tracker5 5.0.5+dfsg-2ubuntu0.1~esm2](https://patchblox.com/security/data/fix/linux/ubuntu-noble-request-tracker5-5.0.5-dfsg-2ubuntu0.1-esm2.md) | May 22, 2026 | | Linux | request-tracker5 Ubuntu 26.04.1 LTS (resolute) | 5.0.7+dfsg-6ubuntu0.1~esm1 | [request-tracker5 5.0.7+dfsg-6ubuntu0.1~esm1](https://patchblox.com/security/data/fix/linux/ubuntu-resolute-request-tracker5-5.0.7-dfsg-6ubuntu0.1-esm1.md) | May 22, 2026 | | Linux | rt Fedora 43 | 5.0.10-1.fc43 | [FEDORA-2026-04F78841EC](https://patchblox.com/security/data/fix/linux/fedora-2026-04f78841ec.md) | Nov 7, 2026 | | Linux | rt-mailgate Fedora 43 | 5.0.10-1.fc43 | [FEDORA-2026-04F78841EC](https://patchblox.com/security/data/fix/linux/fedora-2026-04f78841ec.md) | Nov 7, 2026 | | Linux | rt-tests Fedora 43 | 5.0.10-1.fc43 | [FEDORA-2026-04F78841EC](https://patchblox.com/security/data/fix/linux/fedora-2026-04f78841ec.md) | Nov 7, 2026 | | Linux | rt5-apache2 Ubuntu 22.04.1 LTS (jammy) | 5.0.1+dfsg-1ubuntu1+esm2 | [rt5-apache2 5.0.1+dfsg-1ubuntu1+esm2](https://patchblox.com/security/data/fix/linux/ubuntu-jammy-rt5-apache2-5.0.1-dfsg-1ubuntu1-esm2.md) | May 22, 2026 | | Linux | rt5-apache2 Ubuntu 24.04.5 LTS (noble) | 5.0.5+dfsg-2ubuntu0.1~esm2 | [rt5-apache2 5.0.5+dfsg-2ubuntu0.1~esm2](https://patchblox.com/security/data/fix/linux/ubuntu-noble-rt5-apache2-5.0.5-dfsg-2ubuntu0.1-esm2.md) | May 22, 2026 | | Linux | rt5-apache2 Ubuntu 26.04.1 LTS (resolute) | 5.0.7+dfsg-6ubuntu0.1~esm1 | [rt5-apache2 5.0.7+dfsg-6ubuntu0.1~esm1](https://patchblox.com/security/data/fix/linux/ubuntu-resolute-rt5-apache2-5.0.7-dfsg-6ubuntu0.1-esm1.md) | May 22, 2026 | | Linux | rt5-clients Ubuntu 22.04.1 LTS (jammy) | 5.0.1+dfsg-1ubuntu1+esm2 | [rt5-clients 5.0.1+dfsg-1ubuntu1+esm2](https://patchblox.com/security/data/fix/linux/ubuntu-jammy-rt5-clients-5.0.1-dfsg-1ubuntu1-esm2.md) | May 22, 2026 | | Linux | rt5-clients Ubuntu 24.04.5 LTS (noble) | 5.0.5+dfsg-2ubuntu0.1~esm2 | [rt5-clients 5.0.5+dfsg-2ubuntu0.1~esm2](https://patchblox.com/security/data/fix/linux/ubuntu-noble-rt5-clients-5.0.5-dfsg-2ubuntu0.1-esm2.md) | May 22, 2026 | | Linux | rt5-clients Ubuntu 26.04.1 LTS (resolute) | 5.0.7+dfsg-6ubuntu0.1~esm1 | [rt5-clients 5.0.7+dfsg-6ubuntu0.1~esm1](https://patchblox.com/security/data/fix/linux/ubuntu-resolute-rt5-clients-5.0.7-dfsg-6ubuntu0.1-esm1.md) | May 22, 2026 | | Linux | rt5-db-mysql Ubuntu 22.04.1 LTS (jammy) | 5.0.1+dfsg-1ubuntu1+esm2 | [rt5-db-mysql 5.0.1+dfsg-1ubuntu1+esm2](https://patchblox.com/security/data/fix/linux/ubuntu-jammy-rt5-db-mysql-5.0.1-dfsg-1ubuntu1-esm2.md) | May 22, 2026 | | Linux | rt5-db-mysql Ubuntu 24.04.5 LTS (noble) | 5.0.5+dfsg-2ubuntu0.1~esm2 | [rt5-db-mysql 5.0.5+dfsg-2ubuntu0.1~esm2](https://patchblox.com/security/data/fix/linux/ubuntu-noble-rt5-db-mysql-5.0.5-dfsg-2ubuntu0.1-esm2.md) | May 22, 2026 | | Linux | rt5-db-mysql Ubuntu 26.04.1 LTS (resolute) | 5.0.7+dfsg-6ubuntu0.1~esm1 | [rt5-db-mysql 5.0.7+dfsg-6ubuntu0.1~esm1](https://patchblox.com/security/data/fix/linux/ubuntu-resolute-rt5-db-mysql-5.0.7-dfsg-6ubuntu0.1-esm1.md) | May 22, 2026 | | Linux | rt5-db-postgresql Ubuntu 22.04.1 LTS (jammy) | 5.0.1+dfsg-1ubuntu1+esm2 | [rt5-db-postgresql 5.0.1+dfsg-1ubuntu1+esm2](https://patchblox.com/security/data/fix/linux/ubuntu-jammy-rt5-db-postgresql-5.0.1-dfsg-1ubuntu1-esm2.md) | May 22, 2026 | | Linux | rt5-db-postgresql Ubuntu 24.04.5 LTS (noble) | 5.0.5+dfsg-2ubuntu0.1~esm2 | [rt5-db-postgresql 5.0.5+dfsg-2ubuntu0.1~esm2](https://patchblox.com/security/data/fix/linux/ubuntu-noble-rt5-db-postgresql-5.0.5-dfsg-2ubuntu0.1-esm2.md) | May 22, 2026 | | Linux | rt5-db-postgresql Ubuntu 26.04.1 LTS (resolute) | 5.0.7+dfsg-6ubuntu0.1~esm1 | [rt5-db-postgresql 5.0.7+dfsg-6ubuntu0.1~esm1](https://patchblox.com/security/data/fix/linux/ubuntu-resolute-rt5-db-postgresql-5.0.7-dfsg-6ubuntu0.1-esm1.md) | May 22, 2026 | | Linux | rt5-db-sqlite Ubuntu 22.04.1 LTS (jammy) | 5.0.1+dfsg-1ubuntu1+esm2 | [rt5-db-sqlite 5.0.1+dfsg-1ubuntu1+esm2](https://patchblox.com/security/data/fix/linux/ubuntu-jammy-rt5-db-sqlite-5.0.1-dfsg-1ubuntu1-esm2.md) | May 22, 2026 | | Linux | rt5-db-sqlite Ubuntu 24.04.5 LTS (noble) | 5.0.5+dfsg-2ubuntu0.1~esm2 | [rt5-db-sqlite 5.0.5+dfsg-2ubuntu0.1~esm2](https://patchblox.com/security/data/fix/linux/ubuntu-noble-rt5-db-sqlite-5.0.5-dfsg-2ubuntu0.1-esm2.md) | May 22, 2026 | | Linux | rt5-db-sqlite Ubuntu 26.04.1 LTS (resolute) | 5.0.7+dfsg-6ubuntu0.1~esm1 | [rt5-db-sqlite 5.0.7+dfsg-6ubuntu0.1~esm1](https://patchblox.com/security/data/fix/linux/ubuntu-resolute-rt5-db-sqlite-5.0.7-dfsg-6ubuntu0.1-esm1.md) | May 22, 2026 | | Linux | rt5-doc-html Ubuntu 22.04.1 LTS (jammy) | 5.0.1+dfsg-1ubuntu1+esm2 | [rt5-doc-html 5.0.1+dfsg-1ubuntu1+esm2](https://patchblox.com/security/data/fix/linux/ubuntu-jammy-rt5-doc-html-5.0.1-dfsg-1ubuntu1-esm2.md) | May 22, 2026 | | Linux | rt5-doc-html Ubuntu 24.04.5 LTS (noble) | 5.0.5+dfsg-2ubuntu0.1~esm2 | [rt5-doc-html 5.0.5+dfsg-2ubuntu0.1~esm2](https://patchblox.com/security/data/fix/linux/ubuntu-noble-rt5-doc-html-5.0.5-dfsg-2ubuntu0.1-esm2.md) | May 22, 2026 | | Linux | rt5-doc-html Ubuntu 26.04.1 LTS (resolute) | 5.0.7+dfsg-6ubuntu0.1~esm1 | [rt5-doc-html 5.0.7+dfsg-6ubuntu0.1~esm1](https://patchblox.com/security/data/fix/linux/ubuntu-resolute-rt5-doc-html-5.0.7-dfsg-6ubuntu0.1-esm1.md) | May 22, 2026 | | Linux | rt5-fcgi Ubuntu 22.04.1 LTS (jammy) | 5.0.1+dfsg-1ubuntu1+esm2 | [rt5-fcgi 5.0.1+dfsg-1ubuntu1+esm2](https://patchblox.com/security/data/fix/linux/ubuntu-jammy-rt5-fcgi-5.0.1-dfsg-1ubuntu1-esm2.md) | May 22, 2026 | | Linux | rt5-fcgi Ubuntu 24.04.5 LTS (noble) | 5.0.5+dfsg-2ubuntu0.1~esm2 | [rt5-fcgi 5.0.5+dfsg-2ubuntu0.1~esm2](https://patchblox.com/security/data/fix/linux/ubuntu-noble-rt5-fcgi-5.0.5-dfsg-2ubuntu0.1-esm2.md) | May 22, 2026 | | Linux | rt5-fcgi Ubuntu 26.04.1 LTS (resolute) | 5.0.7+dfsg-6ubuntu0.1~esm1 | [rt5-fcgi 5.0.7+dfsg-6ubuntu0.1~esm1](https://patchblox.com/security/data/fix/linux/ubuntu-resolute-rt5-fcgi-5.0.7-dfsg-6ubuntu0.1-esm1.md) | May 22, 2026 | | Linux | rt5-standalone Ubuntu 22.04.1 LTS (jammy) | 5.0.1+dfsg-1ubuntu1+esm2 | [rt5-standalone 5.0.1+dfsg-1ubuntu1+esm2](https://patchblox.com/security/data/fix/linux/ubuntu-jammy-rt5-standalone-5.0.1-dfsg-1ubuntu1-esm2.md) | May 22, 2026 | | Linux | rt5-standalone Ubuntu 24.04.5 LTS (noble) | 5.0.5+dfsg-2ubuntu0.1~esm2 | [rt5-standalone 5.0.5+dfsg-2ubuntu0.1~esm2](https://patchblox.com/security/data/fix/linux/ubuntu-noble-rt5-standalone-5.0.5-dfsg-2ubuntu0.1-esm2.md) | May 22, 2026 | | Linux | rt5-standalone Ubuntu 26.04.1 LTS (resolute) | 5.0.7+dfsg-6ubuntu0.1~esm1 | [rt5-standalone 5.0.7+dfsg-6ubuntu0.1~esm1](https://patchblox.com/security/data/fix/linux/ubuntu-resolute-rt5-standalone-5.0.7-dfsg-6ubuntu0.1-esm1.md) | May 22, 2026 | --- Data as of 2026-11-09T07:25:28Z UTC. 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