{"id":"CVE-2026-53502","title":"Thumbor is an open-source photo thumbnail service by globo.com","summary":"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 f…","severity":"high","cwe":["CWE-22"],"vendor":"thumbor","product":"thumbor","affected":["thumbor <= 7.7.7"],"patched":["thumbor 7.8.0"],"published":"2026-07-31","updated":"2026-09-08","sourceUpdated":"2026-09-08T20:51:43.490","source":"NVD","sourceUrl":"https://nvd.nist.gov/vuln/detail/CVE-2026-53502","references":[{"url":"https://github.com/thumbor/thumbor/commit/3b986d13677b30fe6651c8c72ebb25957ac0a40d","label":"security-advisories@github.com"},{"url":"https://github.com/thumbor/thumbor/releases/tag/7.8.0","label":"security-advisories@github.com"},{"url":"https://github.com/thumbor/thumbor/security/advisories/GHSA-cj54-hpcc-gj6h","label":"security-advisories@github.com"},{"url":"https://github.com/thumbor/thumbor/security/advisories/GHSA-cj54-hpcc-gj6h","label":"134c704f-9b21-4f2e-91b3-4a467353bcc0"},{"url":"https://github.com/advisories/GHSA-cj54-hpcc-gj6h"}],"tags":["nvd","ghsa","pip"],"epss":0.00357,"epssPercentile":0.29485,"aliases":["GHSA-cj54-hpcc-gj6h"],"ecosystem":"pip","ingestedAt":"2026-07-31T20:02:43.183Z","slug":"CVE-2026-53502","body":"## Overview\n\nThumbor 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.\n\n## Remediation\n\nRefer to the linked advisories for vendor-supplied fixes and affected version ranges.\n\n## Package advisory (CVE-2026-53502)\n\nAffected packages:\n\n- `thumbor <= 7.7.7`\n\nPatched in:\n\n- `thumbor 7.8.0`\n\nSource: https://github.com/advisories/GHSA-cj54-hpcc-gj6h","depth":"twilight","depthScore":41,"depthScoreParts":{"impact":41.3,"likelihood":0.1,"exploitation":0,"ransomware":0},"changes":[]}