{"id":"CVE-2026-85746","state":"PUBLISHED","title":"MariaDB: Out-of-bound buffer write on in `ST_AsText` of nested GeometryCollections","description":"MariaDB server is a community developed fork of MySQL server. From 10.6.1 until 10.6.28, 10.11.19, 11.4.13, 11.8.9, 12.3.3, and 13.0.2, ST_AsText can write beyond an allocated output buffer when converting deeply nested GeometryCollections because recursive WKT serialization does not account for bytes consumed or reserve sufficient space. A low-privileged remote attacker can submit a specially crafted GIS object to corrupt memory and potentially achieve code execution when combined with another vulnerability. This issue is fixed in versions 10.6.28, 10.11.19, 11.4.13, 11.8.9, 12.3.3, and 13.0.2.","publishedAt":"2026-10-16T16:27:36.763Z","updatedAt":"2026-10-16T17:05:31.146Z","severity":{"score":9.9,"label":"Critical","version":"3.1","vector":"CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:C/C:H/I:H/A:H","source":"GitHub_M"},"assigner":"GitHub_M","products":["MariaDB server"],"affected":[{"vendor":"MariaDB","product":"server","versions":[{"version":">= 10.6.1, < 10.6.28","status":"affected"},{"version":">= 10.11.1, < 10.11.19","status":"affected"},{"version":">= 11.4.1, < 11.4.13","status":"affected"},{"version":">= 11.8.1, < 11.8.9","status":"affected"},{"version":">= 12.3.1, < 12.3.3","status":"affected"},{"version":">= 13.0.1, < 13.0.2","status":"affected"}]}],"references":["https://github.com/MariaDB/server/security/advisories/GHSA-8fvj-c57c-pggx","https://github.com/MariaDB/server/commit/5c04ca5524385356ff7cf84974a7d491974c1f85","https://github.com/MariaDB/server/releases/tag/mariadb-10.11.19","https://github.com/MariaDB/server/releases/tag/mariadb-10.6.28","https://github.com/MariaDB/server/releases/tag/mariadb-11.4.13","https://github.com/MariaDB/server/releases/tag/mariadb-11.8.9","https://github.com/MariaDB/server/releases/tag/mariadb-12.3.3","https://github.com/MariaDB/server/releases/tag/mariadb-13.0.2","https://jira.mariadb.org/browse/MDEV-40329"],"weaknesses":["CWE-787"],"ingestedAt":"2026-10-29T20:13:15.269Z","source":{"repository":"CVEProject/cvelistV5","path":"cves/2026/85xxx/CVE-2026-85746.json","commit":"556c9d3a8cd17e218bb8e452ba7cd619a384ff47"},"raw":{"dataType":"CVE_RECORD","dataVersion":"5.2","cveMetadata":{"cveId":"CVE-2026-85746","state":"PUBLISHED","datePublished":"2026-10-16T16:27:36.763Z","dateUpdated":"2026-10-16T17:05:31.146Z","assignerShortName":"GitHub_M","assignerOrgId":"a0819718-46f1-4df5-94e2-005712e83aaa","dateReserved":"2026-09-04T14:50:16.720Z"},"containers":{"cna":{"title":"MariaDB: Out-of-bound buffer write on in `ST_AsText` of nested GeometryCollections","descriptions":[{"lang":"en","value":"MariaDB server is a community developed fork of MySQL server. From 10.6.1 until 10.6.28, 10.11.19, 11.4.13, 11.8.9, 12.3.3, and 13.0.2, ST_AsText can write beyond an allocated output buffer when converting deeply nested GeometryCollections because recursive WKT serialization does not account for bytes consumed or reserve sufficient space. A low-privileged remote attacker can submit a specially crafted GIS object to corrupt memory and potentially achieve code execution when combined with another vulnerability. This issue is fixed in versions 10.6.28, 10.11.19, 11.4.13, 11.8.9, 12.3.3, and 13.0.2."}],"affected":[{"vendor":"MariaDB","product":"server","versions":[{"version":">= 10.6.1, < 10.6.28","status":"affected"},{"version":">= 10.11.1, < 10.11.19","status":"affected"},{"version":">= 11.4.1, < 11.4.13","status":"affected"},{"version":">= 11.8.1, < 11.8.9","status":"affected"},{"version":">= 12.3.1, < 12.3.3","status":"affected"},{"version":">= 13.0.1, < 13.0.2","status":"affected"}]}],"references":[{"url":"https://github.com/MariaDB/server/security/advisories/GHSA-8fvj-c57c-pggx","name":"https://github.com/MariaDB/server/security/advisories/GHSA-8fvj-c57c-pggx","tags":["x_refsource_CONFIRM"]},{"url":"https://github.com/MariaDB/server/commit/5c04ca5524385356ff7cf84974a7d491974c1f85","name":"https://github.com/MariaDB/server/commit/5c04ca5524385356ff7cf84974a7d491974c1f85","tags":["x_refsource_MISC"]},{"url":"https://github.com/MariaDB/server/releases/tag/mariadb-10.11.19","name":"https://github.com/MariaDB/server/releases/tag/mariadb-10.11.19","tags":["x_refsource_MISC"]},{"url":"https://github.com/MariaDB/server/releases/tag/mariadb-10.6.28","name":"https://github.com/MariaDB/server/releases/tag/mariadb-10.6.28","tags":["x_refsource_MISC"]},{"url":"https://github.com/MariaDB/server/releases/tag/mariadb-11.4.13","name":"https://github.com/MariaDB/server/releases/tag/mariadb-11.4.13","tags":["x_refsource_MISC"]},{"url":"https://github.com/MariaDB/server/releases/tag/mariadb-11.8.9","name":"https://github.com/MariaDB/server/releases/tag/mariadb-11.8.9","tags":["x_refsource_MISC"]},{"url":"https://github.com/MariaDB/server/releases/tag/mariadb-12.3.3","name":"https://github.com/MariaDB/server/releases/tag/mariadb-12.3.3","tags":["x_refsource_MISC"]},{"url":"https://github.com/MariaDB/server/releases/tag/mariadb-13.0.2","name":"https://github.com/MariaDB/server/releases/tag/mariadb-13.0.2","tags":["x_refsource_MISC"]},{"url":"https://jira.mariadb.org/browse/MDEV-40329","name":"https://jira.mariadb.org/browse/MDEV-40329","tags":["x_refsource_MISC"]}],"metrics":[{"cvssV3_1":{"attackComplexity":"LOW","attackVector":"NETWORK","availabilityImpact":"HIGH","baseScore":9.9,"baseSeverity":"CRITICAL","confidentialityImpact":"HIGH","integrityImpact":"HIGH","privilegesRequired":"LOW","scope":"CHANGED","userInteraction":"NONE","vectorString":"CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:C/C:H/I:H/A:H","version":"3.1"}}],"problemTypes":[{"descriptions":[{"cweId":"CWE-787","lang":"en","description":"CWE-787: Out-of-bounds Write","type":"CWE"}]}],"providerMetadata":{"shortName":"GitHub_M","orgId":"a0819718-46f1-4df5-94e2-005712e83aaa","dateUpdated":"2026-10-16T16:27:36.763Z"},"source":{"advisory":"GHSA-8fvj-c57c-pggx","discovery":"UNKNOWN"}},"adp":[{"title":"CISA ADP Vulnrichment","metrics":[{"other":{"type":"ssvc","content":{"timestamp":"2026-10-16T16:49:55.618818Z","id":"CVE-2026-85746","options":[{"Exploitation":"none"},{"Automatable":"no"},{"Technical Impact":"total"}],"role":"CISA Coordinator","version":"2.0.3"}}}],"providerMetadata":{"shortName":"CISA-ADP","orgId":"134c704f-9b21-4f2e-91b3-4a467353bcc0","dateUpdated":"2026-10-16T17:05:31.146Z"}}]}}}