{"action":"Upgrade thumbor to 7.8.0 or later.","affected":[{"fixed":"7.8.0","introduced":"0"}],"component":"thumbor","cve_ids":["CVE-2026-53501"],"ecosystem":"PyPI","epss":0.00352,"exploited":false,"fixed_versions":["7.8.0"],"ghsa_id":"GHSA-mw3h-qjxj-6xg9","id":"tcs_01M5KH6CR7906XAV9WD66GBDR6","modified_at":"2026-08-04T14:30:16.418003073Z","published_at":"2026-08-04T11:34:46.281991Z","references":["https://osv.dev/vulnerability/PYSEC-2026-3620","https://github.com/thumbor/thumbor/security/advisories/GHSA-mw3h-qjxj-6xg9","https://github.com/thumbor/thumbor/commit/e3ae3e2500537b4d735df4144129a649374bb70b","https://github.com/thumbor/thumbor","https://github.com/thumbor/thumbor/releases/tag/7.8.0","https://pypi.org/project/thumbor","https://github.com/advisories/GHSA-mw3h-qjxj-6xg9","https://nvd.nist.gov/vuln/detail/CVE-2026-53501"],"severity":{"label":"high","score":8.2},"sources":[{"source":"osv","source_id":"PYSEC-2026-3620","url":"https://osv.dev/vulnerability/PYSEC-2026-3620"}],"summary":"Thumbor has HMAC validation bypass via multiple .replace() calls when removing URL signature"}