{"id":"CVE-2026-53504","url":"https://www.cyber-defence.io/tools/cve/CVE-2026-53504","generatedAt":"2026-10-28T00:28:30.180Z","title":"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.","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.","published":"2026-07-31T19:17:10.000Z","lastModified":"2026-09-08T20:51:43.000Z","status":"Deferred","sourceIdentifier":"security-advisories@github.com","cvss":{"version":"3.1","score":7.5,"severity":"HIGH","vector":"CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H"},"cwe":["CWE-400"],"affected":[],"epss":{"score":0.00609,"percentile":0.48876,"date":"2026-10-26","history":[]},"kev":{"listed":false},"exploits":{"count":0,"verified":false,"firstPublished":null,"source":"Exploit-DB (https://gitlab.com/exploit-database/exploitdb)","entries":[]},"verdict":{"level":"high","text":"High impact if exploited, but EPSS currently rates exploitation as unlikely (0.61%). Schedule it in the normal patch cycle and watch for a rise in EPSS or a public exploit."},"changes":[],"references":[{"url":"https://github.com/thumbor/thumbor/commit/3f38fe1610d20168e91f76d432212de30727eb2e","source":"security-advisories@github.com"},{"url":"https://github.com/thumbor/thumbor/releases/tag/7.8.0","source":"security-advisories@github.com"},{"url":"https://github.com/thumbor/thumbor/security/advisories/GHSA-5vjc-7cxw-4w6j","source":"security-advisories@github.com"},{"url":"https://github.com/thumbor/thumbor/security/advisories/GHSA-5vjc-7cxw-4w6j","source":"134c704f-9b21-4f2e-91b3-4a467353bcc0"}],"sources":{"nvd":"https://nvd.nist.gov/vuln/detail/CVE-2026-53504","epss":"https://www.first.org/epss/","kev":"https://www.cisa.gov/known-exploited-vulnerabilities-catalog","exploitdb":"https://www.exploit-db.com/"},"licence":"CC BY 4.0 — link back to the CVE Explorer if you publish the results; upstream data remains subject to its own terms."}