{"id":"CVE-2026-53502","state":"PUBLISHED","title":"Thumbor has path traversal via post-validation URL decoding bypass in file_loader","description":"Thumbor is an open-source photo thumbnail service by globo.com. Prior to 7.8.0, file_loader decodes percent-encoded path segments after its root-boundary validation, allowing traversal outside FILE_LOADER_ROOT_PATH through watermark or frame filter input. This issue is fixed in 7.8.0.","publishedAt":"2026-07-31T19:03:16.522Z","updatedAt":"2026-07-31T19:18:09.047Z","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":["thumbor thumbor"],"affected":[{"vendor":"thumbor","product":"thumbor","versions":[{"version":"< 7.8.0","status":"affected"}]}],"references":["https://github.com/thumbor/thumbor/security/advisories/GHSA-cj54-hpcc-gj6h","https://github.com/thumbor/thumbor/commit/3b986d13677b30fe6651c8c72ebb25957ac0a40d","https://github.com/thumbor/thumbor/releases/tag/7.8.0"],"weaknesses":["CWE-22"],"ingestedAt":"2026-10-29T20:12:16.098Z","source":{"repository":"CVEProject/cvelistV5","path":"cves/2026/53xxx/CVE-2026-53502.json","commit":"556c9d3a8cd17e218bb8e452ba7cd619a384ff47"},"raw":{"dataType":"CVE_RECORD","dataVersion":"5.2","cveMetadata":{"cveId":"CVE-2026-53502","state":"PUBLISHED","datePublished":"2026-07-31T19:03:16.522Z","dateUpdated":"2026-07-31T19:18:09.047Z","assignerShortName":"GitHub_M","assignerOrgId":"a0819718-46f1-4df5-94e2-005712e83aaa","dateReserved":"2026-06-09T17:05:25.059Z"},"containers":{"cna":{"title":"Thumbor has path traversal via post-validation URL decoding bypass in file_loader","descriptions":[{"lang":"en","value":"Thumbor is an open-source photo thumbnail service by globo.com. Prior to 7.8.0, file_loader decodes percent-encoded path segments after its root-boundary validation, allowing traversal outside FILE_LOADER_ROOT_PATH through watermark or frame filter input. This issue is fixed in 7.8.0."}],"affected":[{"vendor":"thumbor","product":"thumbor","versions":[{"version":"< 7.8.0","status":"affected"}]}],"references":[{"url":"https://github.com/thumbor/thumbor/security/advisories/GHSA-cj54-hpcc-gj6h","name":"https://github.com/thumbor/thumbor/security/advisories/GHSA-cj54-hpcc-gj6h","tags":["x_refsource_CONFIRM"]},{"url":"https://github.com/thumbor/thumbor/commit/3b986d13677b30fe6651c8c72ebb25957ac0a40d","name":"https://github.com/thumbor/thumbor/commit/3b986d13677b30fe6651c8c72ebb25957ac0a40d","tags":["x_refsource_MISC"]},{"url":"https://github.com/thumbor/thumbor/releases/tag/7.8.0","name":"https://github.com/thumbor/thumbor/releases/tag/7.8.0","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":"2026-07-31T19:03:16.522Z"},"source":{"advisory":"GHSA-cj54-hpcc-gj6h","discovery":"UNKNOWN"}},"adp":[{"title":"CISA ADP Vulnrichment","references":[{"url":"https://github.com/thumbor/thumbor/security/advisories/GHSA-cj54-hpcc-gj6h","tags":["exploit"]}],"metrics":[{"other":{"type":"ssvc","content":{"timestamp":"2026-07-31T19:17:57.968026Z","id":"CVE-2026-53502","options":[{"Exploitation":"poc"},{"Automatable":"yes"},{"Technical Impact":"partial"}],"role":"CISA Coordinator","version":"2.0.3"}}}],"providerMetadata":{"shortName":"CISA-ADP","orgId":"134c704f-9b21-4f2e-91b3-4a467353bcc0","dateUpdated":"2026-07-31T19:18:09.047Z"}}]}}}