{"cve":"CVE-2026-53500","nvd":{"published":"2026-07-31T19:17:09.247","modified":"2026-09-08T20:51:43.490","status":"Deferred","description":"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. This issue is fixed in 7.8.0.","cvss_v4":null,"cvss_v3":{"version":"3.1","vector":"CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:N/A:L","score":8.2},"cwes":["CWE-918"],"references":["https://github.com/thumbor/thumbor/commit/68876715350c6c8f49c324e5515e64908830aed7","https://github.com/thumbor/thumbor/releases/tag/7.8.0","https://github.com/thumbor/thumbor/security/advisories/GHSA-6x26-6r6f-m537","https://github.com/thumbor/thumbor/security/advisories/GHSA-6x26-6r6f-m537"],"products":[],"source":"nvd","synced_at":"2026-10-19T22:47:10.050265369+00:00"},"epss":{"cve":"CVE-2026-53500","score":0.00498,"percentile":0.42712,"date":"2026-10-31"},"kev":null,"osv":[{"id":"GHSA-6x26-6r6f-m537","url":"https://osv.dev/vulnerability/GHSA-6x26-6r6f-m537","summary":"Thumbor treats ALLOWED_SOURCES string patterns as unescaped regex, allowing hostname bypass via wildcard dot","modified":"2026-08-04T14:40:34.274877182Z","packages":[{"ecosystem":"PyPI","name":"thumbor","purl":"pkg:pypi/thumbor","ranges":["<7.8.0"],"fixed":["7.8.0"]}]},{"id":"PYSEC-2026-3617","url":"https://osv.dev/vulnerability/PYSEC-2026-3617","summary":"Thumbor treats ALLOWED_SOURCES string patterns as unescaped regex, allowing hostname bypass via wildcard dot","modified":"2026-08-04T14:30:30.167925503Z","packages":[{"ecosystem":"PyPI","name":"thumbor","purl":"pkg:pypi/thumbor","ranges":["<7.8.0"],"fixed":["7.8.0"]}]}],"attribution":["This product uses the NVD API but is not endorsed or certified by the NVD.","EPSS scores: FIRST Exploit Prediction Scoring System, https://www.first.org/epss","Known exploited vulnerabilities: CISA Known Exploited Vulnerabilities Catalog, https://www.cisa.gov/known-exploited-vulnerabilities-catalog","Package advisories: OSV (https://osv.dev), from the GitHub Advisory Database, PyPA, Go, RustSec and other ecosystem databases, under CC-BY 4.0 or CC0","CVE records: the CVE Program's CVE List (https://www.cve.org), under its terms of use (https://www.cve.org/Legal/TermsOfUse). CVE is a registered trademark of The MITRE Corporation; this product is not affiliated with the CVE Program."]}