{"id":"UBUNTU-CVE-2026-53502","details":"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.","modified":"2026-08-06T00:20:53Z","published":"2026-07-31T19:17:00Z","upstream":["CVE-2026-53502"],"references":[{"type":"REPORT","url":"https://ubuntu.com/security/CVE-2026-53502"},{"type":"REPORT","url":"https://www.cve.org/CVERecord?id=CVE-2026-53502"},{"type":"REPORT","url":"https://github.com/thumbor/thumbor/security/advisories/GHSA-cj54-hpcc-gj6h"},{"type":"REPORT","url":"https://github.com/thumbor/thumbor/commit/3b986d13677b30fe6651c8c72ebb25957ac0a40d"},{"type":"REPORT","url":"https://github.com/thumbor/thumbor/releases/tag/7.8.0"}],"affected":[{"package":{"name":"thumbor","ecosystem":"Ubuntu:26.04:LTS","purl":"pkg:deb/ubuntu/thumbor?arch=source&distro=resolute"},"ranges":[{"type":"ECOSYSTEM","events":[{"introduced":"0"}]}],"versions":["7.7.7-4","7.7.7-5"],"ecosystem_specific":{"binaries":[{"binary_version":"7.7.7-5","binary_name":"thumbor"}]},"database_specific":{"source":"https://github.com/canonical/ubuntu-security-notices/blob/main/osv/cve/2026/UBUNTU-CVE-2026-53502.json"}}],"schema_version":"1.8.0","severity":[{"type":"CVSS_V4","score":"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"},{"type":"Ubuntu","score":"medium"}]}