{"id":"CVE-2026-44307","state":"PUBLISHED","title":"Mako: Path traversal via backslash URI on Windows in TemplateLookup","description":"Mako is a template library written in Python. Prior to 1.3.12, on Windows, a URI using backslash traversal (e.g. \\..\\..\\ secret.txt) bypasses the directory traversal check in Template.__init__ and the posixpath-based normalization in TemplateLookup.get_template(), allowing reads of files outside the configured template directory. This vulnerability is fixed in 1.3.12.","publishedAt":"2026-05-12T21:53:52.826Z","updatedAt":"2026-05-13T15:00:13.642Z","severity":{"score":8.7,"label":"High","version":"4.0","vector":"CVSS:4.0/AV:N/AC:L/AT:N/PR:N/UI:N/VC:H/VI:N/VA:N/SC:N/SI:N/SA:N","source":"GitHub_M"},"assigner":"GitHub_M","products":["sqlalchemy mako"],"affected":[{"vendor":"sqlalchemy","product":"mako","versions":[{"version":"< 1.3.12","status":"affected"}]}],"references":["https://github.com/sqlalchemy/mako/security/advisories/GHSA-2h4p-vjrc-8xpq","https://github.com/sqlalchemy/mako/issues/435","https://github.com/sqlalchemy/mako/commit/72e10c573ca0fbcbddd4455abca8ce92a61780d7","https://github.com/sqlalchemy/mako/releases/tag/rel_1_3_12"],"weaknesses":["CWE-22"],"ingestedAt":"2026-10-29T20:11:57.932Z","source":{"repository":"CVEProject/cvelistV5","path":"cves/2026/44xxx/CVE-2026-44307.json","commit":"556c9d3a8cd17e218bb8e452ba7cd619a384ff47"},"raw":{"dataType":"CVE_RECORD","dataVersion":"5.2","cveMetadata":{"cveId":"CVE-2026-44307","state":"PUBLISHED","datePublished":"2026-05-12T21:53:52.826Z","dateUpdated":"2026-05-13T15:00:13.642Z","assignerShortName":"GitHub_M","assignerOrgId":"a0819718-46f1-4df5-94e2-005712e83aaa","dateReserved":"2026-05-05T19:00:06.021Z"},"containers":{"cna":{"title":"Mako: Path traversal via backslash URI on Windows in TemplateLookup","descriptions":[{"lang":"en","value":"Mako is a template library written in Python. Prior to 1.3.12, on Windows, a URI using backslash traversal (e.g. \\..\\..\\ secret.txt) bypasses the directory traversal check in Template.__init__ and the posixpath-based normalization in TemplateLookup.get_template(), allowing reads of files outside the configured template directory. This vulnerability is fixed in 1.3.12."}],"affected":[{"vendor":"sqlalchemy","product":"mako","versions":[{"version":"< 1.3.12","status":"affected"}]}],"references":[{"url":"https://github.com/sqlalchemy/mako/security/advisories/GHSA-2h4p-vjrc-8xpq","name":"https://github.com/sqlalchemy/mako/security/advisories/GHSA-2h4p-vjrc-8xpq","tags":["x_refsource_CONFIRM"]},{"url":"https://github.com/sqlalchemy/mako/issues/435","name":"https://github.com/sqlalchemy/mako/issues/435","tags":["x_refsource_MISC"]},{"url":"https://github.com/sqlalchemy/mako/commit/72e10c573ca0fbcbddd4455abca8ce92a61780d7","name":"https://github.com/sqlalchemy/mako/commit/72e10c573ca0fbcbddd4455abca8ce92a61780d7","tags":["x_refsource_MISC"]},{"url":"https://github.com/sqlalchemy/mako/releases/tag/rel_1_3_12","name":"https://github.com/sqlalchemy/mako/releases/tag/rel_1_3_12","tags":["x_refsource_MISC"]}],"metrics":[{"cvssV4_0":{"attackVector":"NETWORK","attackComplexity":"LOW","attackRequirements":"NONE","privilegesRequired":"NONE","userInteraction":"NONE","vulnConfidentialityImpact":"HIGH","vulnIntegrityImpact":"NONE","vulnAvailabilityImpact":"NONE","subConfidentialityImpact":"NONE","subIntegrityImpact":"NONE","subAvailabilityImpact":"NONE","baseScore":8.7,"baseSeverity":"HIGH","vectorString":"CVSS:4.0/AV:N/AC:L/AT:N/PR:N/UI:N/VC:H/VI:N/VA:N/SC:N/SI:N/SA:N","version":"4.0"}}],"problemTypes":[{"descriptions":[{"cweId":"CWE-22","lang":"en","description":"CWE-22: Improper Limitation of a Pathname to a Restricted Directory ('Path Traversal')","type":"CWE"}]}],"providerMetadata":{"shortName":"GitHub_M","orgId":"a0819718-46f1-4df5-94e2-005712e83aaa","dateUpdated":"2026-05-12T21:53:52.826Z"},"source":{"advisory":"GHSA-2h4p-vjrc-8xpq","discovery":"UNKNOWN"}},"adp":[{"title":"CISA ADP Vulnrichment","metrics":[{"other":{"type":"ssvc","content":{"timestamp":"2026-05-13T14:57:34.308791Z","id":"CVE-2026-44307","options":[{"Exploitation":"none"},{"Automatable":"yes"},{"Technical Impact":"partial"}],"role":"CISA Coordinator","version":"2.0.3"}}}],"providerMetadata":{"shortName":"CISA-ADP","orgId":"134c704f-9b21-4f2e-91b3-4a467353bcc0","dateUpdated":"2026-05-13T15:00:13.642Z"}}]}}}