{"id":"UBUNTU-CVE-2026-53500","details":"Thumbor is an open-source photo thumbnail service by globo.com. Prior to 7.8.0, the ALLOWED_SOURCES configuration passes plain strings to re.match() without escaping dots, so a hostname differing at dot positions can match the allowlist. This issue is fixed in 7.8.0.","modified":"2026-08-06T00:20:53Z","published":"2026-07-31T19:17:00Z","upstream":["CVE-2026-53500"],"references":[{"type":"REPORT","url":"https://ubuntu.com/security/CVE-2026-53500"},{"type":"REPORT","url":"https://www.cve.org/CVERecord?id=CVE-2026-53500"},{"type":"REPORT","url":"https://github.com/thumbor/thumbor/security/advisories/GHSA-6x26-6r6f-m537"},{"type":"REPORT","url":"https://github.com/thumbor/thumbor/commit/68876715350c6c8f49c324e5515e64908830aed7"},{"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_version":"7.7.7-5","binary_name":"thumbor"}]},"database_specific":{"source":"https://github.com/canonical/ubuntu-security-notices/blob/main/osv/cve/2026/UBUNTU-CVE-2026-53500.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:H/I:N/A:L"},{"type":"Ubuntu","score":"medium"}]}