{"action":"Upgrade symfony to 4.3.8+dfsg-1 or later.","affected":[{"fixed":"4.3.8+dfsg-1","introduced":"0"}],"component":"symfony","cve_ids":[],"ecosystem":"Debian","ecosystem_qualifier":"Debian:12","exploited":false,"fixed_versions":["4.3.8+dfsg-1"],"id":"tcs_01M5NE1SWD4KBXR179VBVWBPR3","modified_at":"2026-09-21T07:01:53.644354479Z","published_at":"2019-11-21T23:15:13.403Z","references":["https://osv.dev/vulnerability/DEBIAN-CVE-2019-18887","https://security-tracker.debian.org/tracker/CVE-2019-18887"],"severity":{"label":"high","score":8.1},"sources":[{"source":"osv","source_id":"DEBIAN-CVE-2019-18887","url":"https://osv.dev/vulnerability/DEBIAN-CVE-2019-18887"}],"summary":"An issue was discovered in Symfony 2.8.0 through 2.8.50, 3.4.0 through 3.4.34, 4.2.0 through 4.2.11, and 4.3.0 through 4.3.7. The UriSigner was subject to timing attacks. This is related to symfony/ht"}