{"cve":"CVE-2026-53504","nvd":{"published":"2026-07-31T19:17:09.920","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 convolution filter regular expression performs exponential backtracking on crafted repeated numeric input, allowing a URL request to exhaust processing time. 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:N/I:N/A:H","score":7.5},"cwes":["CWE-400"],"references":["https://github.com/thumbor/thumbor/commit/3f38fe1610d20168e91f76d432212de30727eb2e","https://github.com/thumbor/thumbor/releases/tag/7.8.0","https://github.com/thumbor/thumbor/security/advisories/GHSA-5vjc-7cxw-4w6j","https://github.com/thumbor/thumbor/security/advisories/GHSA-5vjc-7cxw-4w6j"],"products":[],"source":"nvd","synced_at":"2026-10-19T22:47:10.050265369+00:00"},"epss":{"cve":"CVE-2026-53504","score":0.00609,"percentile":0.49183,"date":"2026-11-01"},"kev":null,"osv":[{"id":"GHSA-5vjc-7cxw-4w6j","url":"https://osv.dev/vulnerability/GHSA-5vjc-7cxw-4w6j","summary":"Thumbor has Regex Denial of Service (ReDoS) in `convolution` filter","modified":"2026-08-04T14:40:45.216032517Z","packages":[{"ecosystem":"PyPI","name":"thumbor","purl":"pkg:pypi/thumbor","ranges":["<7.8.0"],"fixed":["7.8.0"]}]},{"id":"PYSEC-2026-3616","url":"https://osv.dev/vulnerability/PYSEC-2026-3616","summary":"Thumbor has Regex Denial of Service (ReDoS) in `convolution` filter","modified":"2026-08-04T14:30:17.877309245Z","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."]}