{"id":"CVE-2020-5274","aliases":["BIT-symfony-2020-5274","DEBIAN-CVE-2020-5274","EUVD-2020-0350","GHSA-m884-279h-32v2"],"status":"published","title":"Exceptions displayed in non-debug configurations in Symfony","description":"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","severity":{"version":"3.1","score":4.6,"vector":"CVSS:3.1/AV:N/AC:L/PR:L/UI:R/S:U/C:L/I:L/A:N","level":"medium","assessor":"cna","from":"cve"},"epss":{"day":"2026-11-09","score":0.01197,"percentile":0.68322,"model":"v2026.06.15"},"facts":{"in_kev":false,"known_exploited":false,"public_exploit":false,"fix_available":true},"cwes":["CWE-209"],"published":"2020-03-30T19:40:14Z","modified":"2026-10-26T12:02:44Z","fixes":[{"ecosystem":"Packagist","package":"symfony/error-handler","fixed_in":["4.4.4","5.0.4"],"sources":["ghsa","osv"]},{"ecosystem":"Packagist","package":"symfony/symfony","fixed_in":["4.4.4","5.0.4"],"sources":["ghsa","osv"]},{"ecosystem":"Bitnami","package":"symfony","fixed_in":["4.4.4","5.0.4"],"sources":["osv"]},{"ecosystem":"Debian:12","package":"symfony","fixed_in":["4.4.8-1"],"sources":["osv"]},{"ecosystem":"Debian:13","package":"symfony","fixed_in":["4.4.8-1"],"sources":["osv"]},{"ecosystem":"Debian:14","package":"symfony","fixed_in":["4.4.8-1"],"sources":["osv"]}],"affected":[{"source":"ghsa","ecosystem":"Packagist","package":"symfony/error-handler","ranges":[{"type":"ECOSYSTEM","events":[{"introduced":"4.4.0"},{"fixed":"4.4.4"}]}]},{"source":"ghsa","ecosystem":"Packagist","package":"symfony/error-handler","ranges":[{"type":"ECOSYSTEM","events":[{"introduced":"5.0.0"},{"fixed":"5.0.4"}]}]},{"source":"ghsa","ecosystem":"Packagist","package":"symfony/symfony","ranges":[{"type":"ECOSYSTEM","events":[{"introduced":"4.4.0"},{"fixed":"4.4.4"}]}]},{"source":"ghsa","ecosystem":"Packagist","package":"symfony/symfony","ranges":[{"type":"ECOSYSTEM","events":[{"introduced":"5.0.0"},{"fixed":"5.0.4"}]}]},{"source":"osv","ecosystem":"Bitnami","package":"symfony","ranges":[{"type":"SEMVER","events":[{"introduced":"4.4.0"},{"fixed":"4.4.4"},{"introduced":"5.0.0"},{"fixed":"5.0.4"}]}]},{"source":"osv","ecosystem":"Debian:12","package":"symfony","ranges":[{"type":"ECOSYSTEM","events":[{"introduced":"0"},{"fixed":"4.4.8-1"}]}]},{"source":"osv","ecosystem":"Debian:13","package":"symfony","ranges":[{"type":"ECOSYSTEM","events":[{"introduced":"0"},{"fixed":"4.4.8-1"}]}]},{"source":"osv","ecosystem":"Debian:14","package":"symfony","ranges":[{"type":"ECOSYSTEM","events":[{"introduced":"0"},{"fixed":"4.4.8-1"}]}]},{"source":"osv","ecosystem":"Packagist","package":"symfony/error-handler","ranges":[{"type":"ECOSYSTEM","events":[{"introduced":"4.4.0"},{"fixed":"4.4.4"}]}],"versions":["v4.4.0","v4.4.1","v4.4.2","v4.4.3"]},{"source":"osv","ecosystem":"Packagist","package":"symfony/error-handler","ranges":[{"type":"ECOSYSTEM","events":[{"introduced":"5.0.0"},{"fixed":"5.0.4"}]}],"versions":["v5.0.0","v5.0.1","v5.0.2","v5.0.3"]},{"source":"osv","ecosystem":"Packagist","package":"symfony/symfony","ranges":[{"type":"ECOSYSTEM","events":[{"introduced":"4.4.0"},{"fixed":"4.4.4"}]}],"versions":["v4.4.0","v4.4.1","v4.4.2","v4.4.3"]},{"source":"osv","ecosystem":"Packagist","package":"symfony/symfony","ranges":[{"type":"ECOSYSTEM","events":[{"introduced":"5.0.0"},{"fixed":"5.0.4"}]}],"versions":["v5.0.0","v5.0.1","v5.0.2","v5.0.3"]}],"products":[{"vendor":"sensiolabs","product":"symfony"},{"vendor":"symfony","product":"symfony"}],"references":[{"url":"https://github.com/symfony/symfony/security/advisories/GHSA-m884-279h-32v2","tags":["x_refsource_CONFIRM","x_transferred","Third Party Advisory","web","advisory"]},{"url":"https://github.com/symfony/symfony/commit/629d21b800a15dc649fb0ae9ed7cd9211e7e45db","tags":["x_refsource_MISC","x_transferred","Patch","Third Party Advisory","web","fix"]},{"url":"https://github.com/symfony/symfony/commit/cf80224589ac05402d4f72f5ddf80900ec94d5ad","tags":["x_refsource_MISC","x_transferred","Patch","Third Party Advisory","web","fix"]},{"url":"https://nvd.nist.gov/vuln/detail/CVE-2020-5274","tags":["advisory"]},{"url":"https://github.com/FriendsOfPHP/security-advisories/blob/master/symfony/error-handler/CVE-2020-5274.yaml","tags":["web"]},{"url":"https://github.com/FriendsOfPHP/security-advisories/blob/master/symfony/symfony/CVE-2020-5274.yaml","tags":["web"]},{"url":"https://symfony.com/cve-2020-5274","tags":["web"]},{"url":"https://github.com/advisories/GHSA-m884-279h-32v2"},{"url":"https://security-tracker.debian.org/tracker/CVE-2020-5274","tags":["advisory"]}],"sources":{"cve":[{"id":"CVE-2020-5274","title":"Exceptions displayed in non-debug configurations in Symfony","description":"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","status":"published","published":"2020-03-30T19:40:14Z","modified":"2024-08-04T08:22:09.1Z","cvss":[{"version":"3.1","score":4.6,"vector":"CVSS:3.1/AV:N/AC:L/PR:L/UI:R/S:U/C:L/I:L/A:N","level":"medium","assessor":"cna"}],"cwes":["CWE-209"],"updated_at":"2026-11-02T14:35:47.877975Z"}],"euvd":[{"id":"EUVD-2020-0350","description":"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","status":"published","published":"2020-03-30T19:40:14Z","modified":"2024-08-04T08:22:09Z","cvss":[{"version":"3.1","score":4.6,"vector":"CVSS:3.1/AV:N/AC:L/PR:L/UI:R/S:U/C:L/I:L/A:N","level":"medium"}],"updated_at":"2026-11-03T03:08:07.28588Z"}],"ghsa":[{"id":"GHSA-m884-279h-32v2","title":"Exceptions displayed in non-debug configurations in Symfony","description":"Description\n-----------\n\nWhen `ErrorHandler` renders an exception HTML page, it uses un-escaped properties from the related Exception class to render the stacktrace. The security issue comes from the fact that the stacktraces were also displayed in non-`debug` environments.\n\nResolution\n----------\n\nThe `ErrorHandler` class now escapes all properties coming from the related Exception, and the stacktrace is not displayed anymore in non-`debug` environments.\n\nThe patches for this issue are available [here](https://github.com/symfony/symfony/commit/cf80224589ac05402d4f72f5ddf80900ec94d5ad) and [here](https://github.com/symfony/symfony/commit/629d21b800a15dc649fb0ae9ed7cd9211e7e45db) for branch 4.4.\n\nCredits\n-------\n\nI would like to thank Luka Sikic for reporting \u0026 Yonel Ceruto and Jérémy Derussé for fixing the issue.","status":"published","published":"2020-03-30T20:09:31Z","modified":"2024-02-06T13:30:38Z","cvss":[{"version":"3.1","score":4.6,"vector":"CVSS:3.1/AV:N/AC:L/PR:L/UI:R/S:U/C:L/I:L/A:N","level":"medium"}],"cwes":["CWE-209"],"updated_at":"2026-11-02T14:37:36.076201Z"}],"nvd":[{"id":"CVE-2020-5274","description":"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","status":"published","published":"2020-03-30T20:15:19.633Z","modified":"2026-06-17T03:21:10.867Z","cvss":[{"version":"3.1","score":4.6,"vector":"CVSS:3.1/AV:N/AC:L/PR:L/UI:R/S:U/C:L/I:L/A:N","level":"medium","assessor":"secondary"},{"version":"3.1","score":5.4,"vector":"CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:U/C:L/I:L/A:N","level":"medium","assessor":"primary"},{"version":"2.0","score":5.5,"vector":"AV:N/AC:L/Au:S/C:P/I:P/A:N","level":"medium","assessor":"primary"}],"cwes":["CWE-209"],"updated_at":"2026-11-02T14:05:56.580228Z"}],"osv":[{"id":"CVE-2020-5274","description":"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","status":"published","published":"2020-03-30T20:15:19.633Z","modified":"2026-10-24T10:49:46.509557778Z","cvss":[{"version":"3.1","score":5.4,"vector":"CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:U/C:L/I:L/A:N","level":"medium"}],"updated_at":"2026-11-02T15:44:16.936975Z"},{"id":"DEBIAN-CVE-2020-5274","description":"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","status":"published","published":"2020-03-30T20:15:19.633Z","modified":"2026-10-26T12:02:44.925349149Z","cvss":[{"version":"3.1","score":5.4,"vector":"CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:U/C:L/I:L/A:N","level":"medium"}],"updated_at":"2026-11-02T15:45:34.019707Z"},{"id":"GHSA-m884-279h-32v2","title":"Exceptions displayed in non-debug configurations in Symfony","description":"Description\n-----------\n\nWhen `ErrorHandler` renders an exception HTML page, it uses un-escaped properties from the related Exception class to render the stacktrace. The security issue comes from the fact that the stacktraces were also displayed in non-`debug` environments.\n\nResolution\n----------\n\nThe `ErrorHandler` class now escapes all properties coming from the related Exception, and the stacktrace is not displayed anymore in non-`debug` environments.\n\nThe patches for this issue are available [here](https://github.com/symfony/symfony/commit/cf80224589ac05402d4f72f5ddf80900ec94d5ad) and [here](https://github.com/symfony/symfony/commit/629d21b800a15dc649fb0ae9ed7cd9211e7e45db) for branch 4.4.\n\nCredits\n-------\n\nI would like to thank Luka Sikic for reporting \u0026 Yonel Ceruto and Jérémy Derussé for fixing the issue.","status":"published","published":"2020-03-30T20:09:31Z","modified":"2026-09-10T03:48:28.735885333Z","cvss":[{"version":"3.1","score":4.6,"vector":"CVSS:3.1/AV:N/AC:L/PR:L/UI:R/S:U/C:L/I:L/A:N","level":"medium"}],"cwes":["CWE-209"],"updated_at":"2026-11-02T15:46:51.463834Z"},{"id":"BIT-symfony-2020-5274","description":"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","status":"published","published":"2024-03-06T11:08:37.408Z","modified":"2024-03-06T11:25:28.861Z","updated_at":"2026-11-02T15:28:35.51001Z"}]}}