ubuntu-cve-2026-41076
Vulnerability from osv_ubuntu
Published
2026-05-22 22:16
Modified
2026-07-06 18:39
Summary
Details

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.

Severity
8.1 (High)
CVSS:3.1/AV:N/AC:H/PR:N/UI:N/S:U/C:H/I:H/A:H
N/A (UNKNOWN)
medium
References
To clipboard 

{
  "affected": [
    {
      "ecosystem_specific": {
        "binaries": [
          {
            "binary_name": "request-tracker4",
            "binary_version": "4.2.12-5"
          },
          {
            "binary_name": "rt4-apache2",
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          },
          {
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            "binary_version": "4.2.12-5"
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          {
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          },
          {
            "binary_name": "rt4-db-postgresql",
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          },
          {
            "binary_name": "rt4-db-sqlite",
            "binary_version": "4.2.12-5"
          },
          {
            "binary_name": "rt4-doc-html",
            "binary_version": "4.2.12-5"
          },
          {
            "binary_name": "rt4-fcgi",
            "binary_version": "4.2.12-5"
          },
          {
            "binary_name": "rt4-standalone",
            "binary_version": "4.2.12-5"
          }
        ]
      },
      "package": {
        "ecosystem": "Ubuntu:16.04:LTS",
        "name": "request-tracker4",
        "purl": "pkg:deb/ubuntu/request-tracker4@4.2.12-5?arch=source\u0026distro=xenial"
      },
      "ranges": [
        {
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            {
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            }
          ],
          "type": "ECOSYSTEM"
        }
      ],
      "versions": [
        "4.2.11-2",
        "4.2.12-3",
        "4.2.12-4",
        "4.2.12-5"
      ]
    },
    {
      "ecosystem_specific": {
        "binaries": [
          {
            "binary_name": "request-tracker4",
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          },
          {
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          },
          {
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          },
          {
            "binary_name": "rt4-doc-html",
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          },
          {
            "binary_name": "rt4-fcgi",
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          {
            "binary_name": "rt4-standalone",
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        ]
      },
      "package": {
        "ecosystem": "Ubuntu:Pro:18.04:LTS",
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        "4.4.1-5",
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    },
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      "ecosystem_specific": {
        "binaries": [
          {
            "binary_name": "request-tracker4",
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          {
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          },
          {
            "binary_name": "rt4-clients",
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          },
          {
            "binary_name": "rt4-db-mysql",
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            "binary_name": "rt4-db-postgresql",
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          {
            "binary_name": "rt4-fcgi",
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            "binary_name": "rt4-standalone",
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        "ecosystem": "Ubuntu:20.04:LTS",
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          {
            "binary_name": "request-tracker4",
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          {
            "binary_name": "rt4-apache2",
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          {
            "binary_name": "rt4-clients",
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          },
          {
            "binary_name": "rt4-db-mysql",
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          },
          {
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          },
          {
            "binary_name": "rt4-db-sqlite",
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    {
      "ecosystem_specific": {
        "availability": "Available with Ubuntu Pro: https://ubuntu.com/pro",
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          {
            "binary_name": "request-tracker5",
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          {
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          {
            "binary_name": "rt5-clients",
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          },
          {
            "binary_name": "rt5-db-mysql",
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            "binary_name": "rt5-db-postgresql",
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          },
          {
            "binary_name": "rt5-doc-html",
            "binary_version": "5.0.1+dfsg-1ubuntu1+esm2"
          },
          {
            "binary_name": "rt5-fcgi",
            "binary_version": "5.0.1+dfsg-1ubuntu1+esm2"
          },
          {
            "binary_name": "rt5-standalone",
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    },
    {
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        "binaries": [
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          {
            "binary_name": "rt4-clients",
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            "binary_name": "rt4-db-mysql",
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          },
          {
            "binary_name": "rt4-db-postgresql",
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          },
          {
            "binary_name": "rt4-db-sqlite",
            "binary_version": "4.4.7+dfsg-1"
          },
          {
            "binary_name": "rt4-doc-html",
            "binary_version": "4.4.7+dfsg-1"
          },
          {
            "binary_name": "rt4-fcgi",
            "binary_version": "4.4.7+dfsg-1"
          },
          {
            "binary_name": "rt4-standalone",
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      },
      "package": {
        "ecosystem": "Ubuntu:24.04:LTS",
        "name": "request-tracker4",
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        "4.4.4+dfsg-2ubuntu2",
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    {
      "ecosystem_specific": {
        "availability": "Available with Ubuntu Pro: https://ubuntu.com/pro",
        "binaries": [
          {
            "binary_name": "request-tracker5",
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          {
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            "binary_name": "rt5-db-postgresql",
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          {
            "binary_name": "rt5-db-sqlite",
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          },
          {
            "binary_name": "rt5-doc-html",
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          {
            "binary_name": "rt5-fcgi",
            "binary_version": "5.0.5+dfsg-2ubuntu0.1~esm2"
          },
          {
            "binary_name": "rt5-standalone",
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      "package": {
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      "versions": [
        "5.0.1+dfsg-1ubuntu1",
        "5.0.5+dfsg-2",
        "5.0.5+dfsg-2ubuntu0.1~esm1"
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    },
    {
      "ecosystem_specific": {
        "binaries": [
          {
            "binary_name": "request-tracker4",
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            "binary_name": "rt4-apache2",
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            "binary_name": "rt4-clients",
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          {
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          {
            "binary_name": "rt4-db-postgresql",
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          {
            "binary_name": "rt4-db-sqlite",
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          },
          {
            "binary_name": "rt4-doc-html",
            "binary_version": "4.4.7+dfsg-4syncable1"
          },
          {
            "binary_name": "rt4-fcgi",
            "binary_version": "4.4.7+dfsg-4syncable1"
          },
          {
            "binary_name": "rt4-standalone",
            "binary_version": "4.4.7+dfsg-4syncable1"
          }
        ]
      },
      "package": {
        "ecosystem": "Ubuntu:25.10",
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      },
      "ranges": [
        {
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            }
          ],
          "type": "ECOSYSTEM"
        }
      ],
      "versions": [
        "4.4.7+dfsg-4syncable1"
      ]
    },
    {
      "ecosystem_specific": {
        "binaries": [
          {
            "binary_name": "request-tracker5",
            "binary_version": "5.0.7+dfsg-4"
          },
          {
            "binary_name": "rt5-apache2",
            "binary_version": "5.0.7+dfsg-4"
          },
          {
            "binary_name": "rt5-clients",
            "binary_version": "5.0.7+dfsg-4"
          },
          {
            "binary_name": "rt5-db-mysql",
            "binary_version": "5.0.7+dfsg-4"
          },
          {
            "binary_name": "rt5-db-postgresql",
            "binary_version": "5.0.7+dfsg-4"
          },
          {
            "binary_name": "rt5-db-sqlite",
            "binary_version": "5.0.7+dfsg-4"
          },
          {
            "binary_name": "rt5-doc-html",
            "binary_version": "5.0.7+dfsg-4"
          },
          {
            "binary_name": "rt5-fcgi",
            "binary_version": "5.0.7+dfsg-4"
          },
          {
            "binary_name": "rt5-standalone",
            "binary_version": "5.0.7+dfsg-4"
          }
        ]
      },
      "package": {
        "ecosystem": "Ubuntu:25.10",
        "name": "request-tracker5",
        "purl": "pkg:deb/ubuntu/request-tracker5@5.0.7+dfsg-4?arch=source\u0026distro=questing"
      },
      "ranges": [
        {
          "events": [
            {
              "introduced": "0"
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          ],
          "type": "ECOSYSTEM"
        }
      ],
      "versions": [
        "5.0.7+dfsg-2",
        "5.0.7+dfsg-3",
        "5.0.7+dfsg-4"
      ]
    },
    {
      "ecosystem_specific": {
        "binaries": [
          {
            "binary_name": "request-tracker4",
            "binary_version": "4.4.7+dfsg-4syncable1"
          },
          {
            "binary_name": "rt4-apache2",
            "binary_version": "4.4.7+dfsg-4syncable1"
          },
          {
            "binary_name": "rt4-clients",
            "binary_version": "4.4.7+dfsg-4syncable1"
          },
          {
            "binary_name": "rt4-db-mysql",
            "binary_version": "4.4.7+dfsg-4syncable1"
          },
          {
            "binary_name": "rt4-db-postgresql",
            "binary_version": "4.4.7+dfsg-4syncable1"
          },
          {
            "binary_name": "rt4-db-sqlite",
            "binary_version": "4.4.7+dfsg-4syncable1"
          },
          {
            "binary_name": "rt4-doc-html",
            "binary_version": "4.4.7+dfsg-4syncable1"
          },
          {
            "binary_name": "rt4-fcgi",
            "binary_version": "4.4.7+dfsg-4syncable1"
          },
          {
            "binary_name": "rt4-standalone",
            "binary_version": "4.4.7+dfsg-4syncable1"
          }
        ]
      },
      "package": {
        "ecosystem": "Ubuntu:26.04:LTS",
        "name": "request-tracker4",
        "purl": "pkg:deb/ubuntu/request-tracker4@4.4.7+dfsg-4syncable1?arch=source\u0026distro=resolute"
      },
      "ranges": [
        {
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          ],
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        }
      ],
      "versions": [
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      ]
    },
    {
      "ecosystem_specific": {
        "availability": "Available with Ubuntu Pro: https://ubuntu.com/pro",
        "binaries": [
          {
            "binary_name": "request-tracker5",
            "binary_version": "5.0.7+dfsg-6ubuntu0.1~esm1"
          },
          {
            "binary_name": "rt5-apache2",
            "binary_version": "5.0.7+dfsg-6ubuntu0.1~esm1"
          },
          {
            "binary_name": "rt5-clients",
            "binary_version": "5.0.7+dfsg-6ubuntu0.1~esm1"
          },
          {
            "binary_name": "rt5-db-mysql",
            "binary_version": "5.0.7+dfsg-6ubuntu0.1~esm1"
          },
          {
            "binary_name": "rt5-db-postgresql",
            "binary_version": "5.0.7+dfsg-6ubuntu0.1~esm1"
          },
          {
            "binary_name": "rt5-db-sqlite",
            "binary_version": "5.0.7+dfsg-6ubuntu0.1~esm1"
          },
          {
            "binary_name": "rt5-doc-html",
            "binary_version": "5.0.7+dfsg-6ubuntu0.1~esm1"
          },
          {
            "binary_name": "rt5-fcgi",
            "binary_version": "5.0.7+dfsg-6ubuntu0.1~esm1"
          },
          {
            "binary_name": "rt5-standalone",
            "binary_version": "5.0.7+dfsg-6ubuntu0.1~esm1"
          }
        ]
      },
      "package": {
        "ecosystem": "Ubuntu:Pro:26.04:LTS",
        "name": "request-tracker5",
        "purl": "pkg:deb/ubuntu/request-tracker5@5.0.7+dfsg-6ubuntu0.1~esm1?arch=source\u0026distro=esm-apps/resolute"
      },
      "ranges": [
        {
          "events": [
            {
              "introduced": "0"
            },
            {
              "fixed": "5.0.7+dfsg-6ubuntu0.1~esm1"
            }
          ],
          "type": "ECOSYSTEM"
        }
      ],
      "versions": [
        "5.0.7+dfsg-4",
        "5.0.7+dfsg-6"
      ]
    }
  ],
  "aliases": [],
  "details": "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\u0027s authentication policy to ensure it rejects unauthenticated bind attempts. Upgrading RT remains the recommended fix.",
  "id": "UBUNTU-CVE-2026-41076",
  "modified": "2026-07-06T18:39:29Z",
  "published": "2026-05-22T22:16:00Z",
  "references": [
    {
      "type": "REPORT",
      "url": "https://ubuntu.com/security/CVE-2026-41076"
    },
    {
      "type": "REPORT",
      "url": "https://www.cve.org/CVERecord?id=CVE-2026-41076"
    },
    {
      "type": "REPORT",
      "url": "https://github.com/bestpractical/rt/releases/tag/rt-5.0.10"
    },
    {
      "type": "ADVISORY",
      "url": "https://ubuntu.com/security/notices/USN-8506-1"
    }
  ],
  "related": [
    "USN-8506-1"
  ],
  "schema_version": "1.7.0",
  "severity": [
    {
      "score": "CVSS:3.1/AV:N/AC:H/PR:N/UI:N/S:U/C:H/I:H/A:H",
      "type": "CVSS_V3"
    },
    {
      "score": "medium",
      "type": "Ubuntu"
    }
  ],
  "upstream": [
    "CVE-2026-41076"
  ]
}



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Tags
Taxonomy of the tags.





Forecast uses a logistic model when the trend is rising, or an exponential decay model when the trend is falling. Fitted via linearized least squares.

Sightings

Author Source Type Date Other

Nomenclature

  • Seen: The vulnerability was mentioned, discussed, or observed by the user.
  • Confirmed: The vulnerability has been validated from an analyst's perspective.
  • Published Proof of Concept: A public proof of concept is available for this vulnerability.
  • Exploited: The vulnerability was observed as exploited by the user who reported the sighting.
  • Patched: The vulnerability was observed as successfully patched by the user who reported the sighting.
  • Not exploited: The vulnerability was not observed as exploited by the user who reported the sighting.
  • Not confirmed: The user expressed doubt about the validity of the vulnerability.
  • Not patched: The vulnerability was not observed as successfully patched by the user who reported the sighting.


Detection rules are retrieved from Rulezet.