{"id":"CVE-2020-5274","aliases":["BIT-symfony-2020-5274","GHSA-m884-279h-32v2"],"url":"https://o3.security/vulnerability/CVE-2020-5274","summary":"Exceptions displayed in non-debug configurations in Symfony","details":"In Symfony before versions 5.0.5 and 4.4.5, some properties of the Exception were not properly escaped when the `ErrorHandler` rendered it stacktrace. In addition, the stacktrace were displayed even in a non-debug configuration. The ErrorHandler now escape alls properties of the exception, and the stacktrace is only display in debug configuration. This issue is patched in symfony/http-foundation versions 4.4.5 and 5.0.5","published":"2020-03-30T20:15:19.633Z","modified":"2026-08-07T15:13:41.715169Z","cvss":{"score":5.4,"severity":"MEDIUM","vector":"CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:U/C:L/I:L/A:N"},"epss":null,"cisaKev":null,"exploitsKnown":null,"affectedPackages":[{"ecosystem":"Packagist","name":"symfony/error-handler","fixedVersion":"4.4.4"},{"ecosystem":"Packagist","name":"symfony/error-handler","fixedVersion":"5.0.4"},{"ecosystem":"Packagist","name":"symfony/symfony","fixedVersion":"4.4.4"},{"ecosystem":"Packagist","name":"symfony/symfony","fixedVersion":"5.0.4"}],"fix":{"url":"https://github.com/symfony/symfony/commit/629d21b800a15dc649fb0ae9ed7cd9211e7e45db","label":"symfony/symfony@629d21b"},"references":[{"type":"ADVISORY","url":"https://github.com/symfony/symfony/security/advisories/GHSA-m884-279h-32v2"},{"type":"FIX","url":"https://github.com/symfony/symfony/commit/629d21b800a15dc649fb0ae9ed7cd9211e7e45db"},{"type":"FIX","url":"https://github.com/symfony/symfony/commit/cf80224589ac05402d4f72f5ddf80900ec94d5ad"}],"provenance":{"sources":["OSV.dev","FIRST.org (EPSS)"],"lastVerified":"2026-08-07T15:13:41.715169Z"}}