{"id":"CVE-2026-53500","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, the ALLOWED_SOURCES configuration passes plain strings to re.match() without escaping dots, so a hostname differing at dot positions can match the allowlist.…","severity":"high","cvss":8.2,"cvssVector":"CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:N/A:L","cwe":["CWE-918","CWE-1333"],"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-2026-53500","references":[{"url":"https://github.com/thumbor/thumbor/commit/68876715350c6c8f49c324e5515e64908830aed7","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-6x26-6r6f-m537","label":"security-advisories@github.com"},{"url":"https://github.com/thumbor/thumbor/security/advisories/GHSA-6x26-6r6f-m537","label":"134c704f-9b21-4f2e-91b3-4a467353bcc0"},{"url":"https://github.com/advisories/GHSA-6x26-6r6f-m537"}],"tags":["nvd","ghsa","pip"],"epss":0.00287,"epssPercentile":0.21482,"aliases":["GHSA-6x26-6r6f-m537"],"ecosystem":"pip","ingestedAt":"2026-07-31T19:01:36.600Z","slug":"CVE-2026-53500","body":"## Overview\n\nThumbor is an open-source photo thumbnail service by globo.com. Prior to 7.8.0, the ALLOWED_SOURCES configuration passes plain strings to re.match() without escaping dots, so a hostname differing at dot positions can match the allowlist. 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-2026-53500)\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-6x26-6r6f-m537","depth":"twilight","depthScore":45,"depthScoreParts":{"impact":45.1,"likelihood":0.1,"exploitation":0,"ransomware":0},"changes":[]}