{"id":"CVE-2026-107851","state":"PUBLISHED","title":"Contao: Improper access control in the table access voter","description":"Contao is an Open Source CMS. From version 5.7.0 until 5.7.12, TableAccessVoter::hasAccessToModule() in core-bundle/src/Security/Voter/DataContainer/TableAccessVoter.php caches authorization decisions using only $tokenHash, a hash of the user's security token, and omits the table returned by getDataSource(). If one request first checks a table allowed to the user and then a different denied table, the voter can reuse the allowed result, while DefaultDataContainerVoter can convert an incorrect abstention into a grant. A low-privileged backend user can consequently read, create, update, or delete records in tables outside assigned module permissions, including tables containing member or newsletter-subscriber data. This issue is fixed in version 5.7.12.","publishedAt":"2026-10-09T20:26:31.329Z","updatedAt":"2026-10-13T17:03:02.847Z","severity":{"score":4.3,"label":"Medium","version":"3.1","vector":"CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:U/C:L/I:N/A:N","source":"GitHub_M"},"assigner":"GitHub_M","products":["contao contao"],"affected":[{"vendor":"contao","product":"contao","versions":[{"version":">= 5.7.0, < 5.7.12","status":"affected"}]}],"references":["https://github.com/contao/contao/security/advisories/GHSA-5974-gfqc-wrcm","https://github.com/contao/contao/commit/9d6f582a4cc6a758ce11d1043fc9c0ba62c5f4c9","https://github.com/contao/contao/releases/tag/5.7.12"],"weaknesses":["CWE-524","CWE-863"],"ingestedAt":"2026-10-29T20:10:23.711Z","source":{"repository":"CVEProject/cvelistV5","path":"cves/2026/107xxx/CVE-2026-107851.json","commit":"556c9d3a8cd17e218bb8e452ba7cd619a384ff47"},"raw":{"dataType":"CVE_RECORD","dataVersion":"5.2","cveMetadata":{"cveId":"CVE-2026-107851","state":"PUBLISHED","datePublished":"2026-10-09T20:26:31.329Z","dateUpdated":"2026-10-13T17:03:02.847Z","assignerShortName":"GitHub_M","assignerOrgId":"a0819718-46f1-4df5-94e2-005712e83aaa","dateReserved":"2026-10-08T22:34:49.292Z"},"containers":{"cna":{"title":"Contao: Improper access control in the table access voter","descriptions":[{"lang":"en","value":"Contao is an Open Source CMS. From version 5.7.0 until 5.7.12, TableAccessVoter::hasAccessToModule() in core-bundle/src/Security/Voter/DataContainer/TableAccessVoter.php caches authorization decisions using only $tokenHash, a hash of the user's security token, and omits the table returned by getDataSource(). If one request first checks a table allowed to the user and then a different denied table, the voter can reuse the allowed result, while DefaultDataContainerVoter can convert an incorrect abstention into a grant. A low-privileged backend user can consequently read, create, update, or delete records in tables outside assigned module permissions, including tables containing member or newsletter-subscriber data. This issue is fixed in version 5.7.12."}],"affected":[{"vendor":"contao","product":"contao","versions":[{"version":">= 5.7.0, < 5.7.12","status":"affected"}]}],"references":[{"url":"https://github.com/contao/contao/security/advisories/GHSA-5974-gfqc-wrcm","name":"https://github.com/contao/contao/security/advisories/GHSA-5974-gfqc-wrcm","tags":["x_refsource_CONFIRM"]},{"url":"https://github.com/contao/contao/commit/9d6f582a4cc6a758ce11d1043fc9c0ba62c5f4c9","name":"https://github.com/contao/contao/commit/9d6f582a4cc6a758ce11d1043fc9c0ba62c5f4c9","tags":["x_refsource_MISC"]},{"url":"https://github.com/contao/contao/releases/tag/5.7.12","name":"https://github.com/contao/contao/releases/tag/5.7.12","tags":["x_refsource_MISC"]}],"metrics":[{"cvssV3_1":{"attackComplexity":"LOW","attackVector":"NETWORK","availabilityImpact":"NONE","baseScore":4.3,"baseSeverity":"MEDIUM","confidentialityImpact":"LOW","integrityImpact":"NONE","privilegesRequired":"LOW","scope":"UNCHANGED","userInteraction":"NONE","vectorString":"CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:U/C:L/I:N/A:N","version":"3.1"}}],"problemTypes":[{"descriptions":[{"cweId":"CWE-524","lang":"en","description":"CWE-524: Use of Cache Containing Sensitive Information","type":"CWE"}]},{"descriptions":[{"cweId":"CWE-863","lang":"en","description":"CWE-863: Incorrect Authorization","type":"CWE"}]}],"providerMetadata":{"shortName":"GitHub_M","orgId":"a0819718-46f1-4df5-94e2-005712e83aaa","dateUpdated":"2026-10-09T20:26:31.329Z"},"source":{"advisory":"GHSA-5974-gfqc-wrcm","discovery":"UNKNOWN"}},"adp":[{"title":"CISA ADP Vulnrichment","metrics":[{"other":{"type":"ssvc","content":{"timestamp":"2026-10-13T17:02:33.416341Z","id":"CVE-2026-107851","options":[{"Exploitation":"none"},{"Automatable":"no"},{"Technical Impact":"partial"}],"role":"CISA Coordinator","version":"2.0.3"}}}],"providerMetadata":{"shortName":"CISA-ADP","orgId":"134c704f-9b21-4f2e-91b3-4a467353bcc0","dateUpdated":"2026-10-13T17:03:02.847Z"}}]}}}