{"id":"UBUNTU-CVE-2026-53504","details":"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.","modified":"2026-08-06T00:20:53Z","published":"2026-07-31T19:17:00Z","upstream":["CVE-2026-53504"],"references":[{"type":"REPORT","url":"https://ubuntu.com/security/CVE-2026-53504"},{"type":"REPORT","url":"https://www.cve.org/CVERecord?id=CVE-2026-53504"},{"type":"REPORT","url":"https://github.com/thumbor/thumbor/security/advisories/GHSA-5vjc-7cxw-4w6j"},{"type":"REPORT","url":"https://github.com/thumbor/thumbor/commit/3f38fe1610d20168e91f76d432212de30727eb2e"},{"type":"REPORT","url":"https://github.com/thumbor/thumbor/releases/tag/7.8.0"}],"affected":[{"package":{"name":"thumbor","ecosystem":"Ubuntu:26.04:LTS","purl":"pkg:deb/ubuntu/thumbor?arch=source&distro=resolute"},"ranges":[{"type":"ECOSYSTEM","events":[{"introduced":"0"}]}],"versions":["7.7.7-4","7.7.7-5"],"ecosystem_specific":{"binaries":[{"binary_name":"thumbor","binary_version":"7.7.7-5"}]},"database_specific":{"source":"https://github.com/canonical/ubuntu-security-notices/blob/main/osv/cve/2026/UBUNTU-CVE-2026-53504.json"}}],"schema_version":"1.8.0","severity":[{"type":"CVSS_V3","score":"CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H"},{"type":"Ubuntu","score":"medium"}]}