{"id":"CVE-2026-53505","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, Thumbor's filters:proportion(<value>) filter does not enforce an upper bound on <value> and runs in the post-transform phase. An attacker can trigger extreme…","severity":"high","cvss":7.5,"cvssVector":"CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H","cwe":["CWE-400"],"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-2026-53505","references":[{"url":"https://github.com/thumbor/thumbor/commit/2c716119de986cfc68c7071af52a98187e006023","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-phj3-59pf-cp83","label":"security-advisories@github.com"},{"url":"https://github.com/advisories/GHSA-phj3-59pf-cp83"}],"tags":["nvd","ghsa","pip"],"epss":0.00335,"epssPercentile":0.26952,"aliases":["GHSA-phj3-59pf-cp83"],"ecosystem":"pip","ingestedAt":"2026-07-31T20:02:43.210Z","slug":"CVE-2026-53505","body":"## Overview\n\nThumbor is an open-source photo thumbnail service by globo.com. Prior to 7.8.0, Thumbor's filters:proportion(<value>) filter does not enforce an upper bound on <value> and runs in the post-transform phase. An attacker can trigger extremely large resizes (CPU/memory exhaustion) and cause denial of service. 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-2026-53505)\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-phj3-59pf-cp83","depth":"twilight","depthScore":41,"depthScoreParts":{"impact":41.3,"likelihood":0.1,"exploitation":0,"ransomware":0},"changes":[]}