{"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_01M5KFRTRYETTKVV72C8P7MYC5","modified_at":"2026-08-04T14:40:46.956077457Z","published_at":"2026-07-31T18:51:54Z","references":["https://osv.dev/vulnerability/GHSA-mw3h-qjxj-6xg9","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"],"severity":{"label":"high","score":8.2},"sources":[{"source":"osv","source_id":"GHSA-mw3h-qjxj-6xg9","url":"https://osv.dev/vulnerability/GHSA-mw3h-qjxj-6xg9"}],"summary":"Thumbor has HMAC validation bypass via multiple .replace() calls when removing URL signature"}