{"id":"CVE-2026-45072","aliases":["DEBIAN-CVE-2026-45072","EUVD-2026-44366","GHSA-hmr5-2xcr-v8pp","UBUNTU-CVE-2026-45072"],"status":"published","title":"Symfony: Stored XSS in WebProfiler CodeExtension::fileExcerpt() — Unescaped Non-PHP File Rendering","description":"Symfony is a PHP framework for web and console applications and a set of reusable PHP components. From 6.4.24 until 6.4.40, 7.4.12, and 8.0.12, the development profiler file_excerpt Twig filter escapes PHP files through highlight_string() but interpolates lines from non-PHP files directly into \u003ccode\u003e elements, allowing stored XSS against a developer who opens an attacker-written file such as var/log/dev.log in the profiler. This issue is fixed in versions 6.4.40, 7.4.12, and 8.0.12.","severity":{"version":"4.0","score":2,"vector":"CVSS:4.0/AV:N/AC:L/AT:P/PR:L/UI:A/VC:N/VI:N/VA:N/SC:L/SI:L/SA:N","level":"low","assessor":"cna","from":"cve"},"epss":{"day":"2026-11-11","score":0.00305,"percentile":0.23572,"model":"v2026.06.15"},"facts":{"in_kev":false,"known_exploited":false,"public_exploit":false,"fix_available":true},"cwes":["CWE-79"],"published":"2026-05-27T21:10:44Z","modified":"2026-10-28T02:30:42Z","fixes":[{"ecosystem":"Packagist","package":"symfony/symfony","fixed_in":["6.4.40","7.4.12","8.0.12"],"sources":["ghsa","osv"]},{"ecosystem":"Packagist","package":"symfony/twig-bridge","fixed_in":["6.4.40"],"sources":["ghsa","osv"]},{"ecosystem":"Packagist","package":"symfony/web-profiler-bundle","fixed_in":["7.4.12","8.0.12"],"sources":["ghsa","osv"]},{"ecosystem":"Debian:13","package":"symfony","fixed_in":["6.4.41+dfsg-0+deb13u1"],"sources":["osv"]},{"ecosystem":"Debian:14","package":"symfony","fixed_in":["7.4.12+dfsg-1"],"sources":["osv"]}],"affected":[{"source":"ghsa","ecosystem":"Packagist","package":"symfony/symfony","ranges":[{"type":"ECOSYSTEM","events":[{"introduced":"6.4.24"},{"fixed":"6.4.40"}]}]},{"source":"ghsa","ecosystem":"Packagist","package":"symfony/symfony","ranges":[{"type":"ECOSYSTEM","events":[{"introduced":"7.2.9"},{"fixed":"7.4.12"}]}]},{"source":"ghsa","ecosystem":"Packagist","package":"symfony/symfony","ranges":[{"type":"ECOSYSTEM","events":[{"introduced":"8.0.0"},{"fixed":"8.0.12"}]}]},{"source":"ghsa","ecosystem":"Packagist","package":"symfony/twig-bridge","ranges":[{"type":"ECOSYSTEM","events":[{"introduced":"6.4.24"},{"fixed":"6.4.40"}]}]},{"source":"ghsa","ecosystem":"Packagist","package":"symfony/web-profiler-bundle","ranges":[{"type":"ECOSYSTEM","events":[{"introduced":"7.2.9"},{"fixed":"7.4.12"}]}]},{"source":"ghsa","ecosystem":"Packagist","package":"symfony/web-profiler-bundle","ranges":[{"type":"ECOSYSTEM","events":[{"introduced":"8.0.0"},{"fixed":"8.0.12"}]}]},{"source":"osv","ecosystem":"Debian:13","package":"symfony","ranges":[{"type":"ECOSYSTEM","events":[{"introduced":"0"},{"fixed":"6.4.41+dfsg-0+deb13u1"}]}],"versions":["6.4.21+dfsg-2","6.4.21+dfsg-2+deb13u1","6.4.24+dfsg-1","6.4.25+dfsg-1","6.4.40+dfsg-0+deb13u1"]},{"source":"osv","ecosystem":"Debian:14","package":"symfony","ranges":[{"type":"ECOSYSTEM","events":[{"introduced":"0"},{"fixed":"7.4.12+dfsg-1"}]}],"versions":["6.4.21+dfsg-2","6.4.24+dfsg-1","6.4.25+dfsg-1","7.0.4+dfsg-1","7.0.5+dfsg-1","7.0.6+dfsg-1","7.0.7+dfsg-1","7.1.0~beta1+dfsg-1","7.1.0~rc1+dfsg-1","7.1.2+dfsg-1","7.1.3+dfsg-1","7.1.4+dfsg-1","7.1.5+dfsg-1","7.2.0~beta1+dfsg-1","7.2.0~beta2+dfsg-1","7.2.0~rc1+dfsg-1","7.2.1+dfsg-1","7.2.2+dfsg-1","7.2.3+dfsg-1","7.2.4+dfsg-1","7.2.5+dfsg-1","7.2.6-1","7.3.0+dfsg-1","7.3.0~beta1+dfsg-1","7.3.0~beta2+dfsg-1","7.3.0~rc1+dfsg-1","7.3.1+dfsg-1","7.3.2+dfsg-1","7.3.3+dfsg-1","7.3.4+dfsg-1","7.3.5-1","7.4.0+dfsg-1","7.4.0+dfsg-2","7.4.0~beta1-1","7.4.0~beta1-2","7.4.0~beta2+dfsg-1","7.4.0~beta2+dfsg-2","7.4.0~beta2+dfsg-3","7.4.0~rc1+dfsg-1","7.4.0~rc2+dfsg-1","7.4.0~rc3+dfsg-1","7.4.10+dfsg-1","7.4.2+dfsg-1","7.4.2+dfsg-2","7.4.3+dfsg-1","7.4.4+dfsg-1","7.4.5+dfsg-1","7.4.6+dfsg-1","7.4.6+dfsg-2","7.4.7+dfsg-1","7.4.8+dfsg-1","7.4.9+dfsg-1"]},{"source":"osv","ecosystem":"Packagist","package":"symfony/symfony","ranges":[{"type":"ECOSYSTEM","events":[{"introduced":"6.4.24"},{"fixed":"6.4.40"}]}],"versions":["v6.4.24","v6.4.25","v6.4.26","v6.4.27","v6.4.28","v6.4.29","v6.4.30","v6.4.31","v6.4.32","v6.4.33","v6.4.34","v6.4.35","v6.4.36","v6.4.37","v6.4.38","v6.4.39"]},{"source":"osv","ecosystem":"Packagist","package":"symfony/symfony","ranges":[{"type":"ECOSYSTEM","events":[{"introduced":"7.2.9"},{"fixed":"7.4.12"}]}],"versions":["v7.2.9","v7.3.0","v7.3.0-BETA1","v7.3.0-BETA2","v7.3.0-RC1","v7.3.1","v7.3.10","v7.3.11","v7.3.2","v7.3.3","v7.3.4","v7.3.5","v7.3.6","v7.3.7","v7.3.8","v7.3.9","v7.4.0","v7.4.0-BETA1","v7.4.0-BETA2","v7.4.0-RC1","v7.4.0-RC2","v7.4.0-RC3","v7.4.1","v7.4.10","v7.4.11","v7.4.2","v7.4.3","v7.4.4","v7.4.5","v7.4.6","v7.4.7","v7.4.8","v7.4.9"]},{"source":"osv","ecosystem":"Packagist","package":"symfony/symfony","ranges":[{"type":"ECOSYSTEM","events":[{"introduced":"8.0.0"},{"fixed":"8.0.12"}]}],"versions":["v8.0.0","v8.0.1","v8.0.10","v8.0.11","v8.0.2","v8.0.3","v8.0.4","v8.0.5","v8.0.6","v8.0.7","v8.0.8","v8.0.9"]},{"source":"osv","ecosystem":"Packagist","package":"symfony/twig-bridge","ranges":[{"type":"ECOSYSTEM","events":[{"introduced":"6.4.24"},{"fixed":"6.4.40"}]}],"versions":["v6.4.24","v6.4.25","v6.4.30","v6.4.31","v6.4.32","v6.4.34","v6.4.35","v6.4.36"]},{"source":"osv","ecosystem":"Packagist","package":"symfony/web-profiler-bundle","ranges":[{"type":"ECOSYSTEM","events":[{"introduced":"7.2.9"},{"fixed":"7.4.12"}]}],"versions":["v7.2.9","v7.3.0","v7.3.0-BETA1","v7.3.0-RC1","v7.3.1","v7.3.10","v7.3.2","v7.3.3","v7.3.4","v7.3.5","v7.3.9","v7.4.0","v7.4.0-BETA1","v7.4.0-RC1","v7.4.0-RC3","v7.4.11","v7.4.3","v7.4.4","v7.4.6","v7.4.7","v7.4.8","v7.4.9"]},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Advisory","advisory","web"]},{"url":"https://github.com/symfony/symfony/commit/863aa81c61166f1aa74b7732df316f76113acbdb","tags":["x_refsource_MISC","Patch","fix","web"]},{"url":"https://github.com/symfony/symfony/releases/tag/v6.4.40","tags":["x_refsource_MISC","Release Notes","web"]},{"url":"https://github.com/symfony/symfony/releases/tag/v7.4.12","tags":["x_refsource_MISC","Release Notes","web"]},{"url":"https://github.com/symfony/symfony/releases/tag/v8.0.12","tags":["x_refsource_MISC","Release Notes","web"]},{"url":"https://github.com/FriendsOfPHP/security-advisories/blob/master/symfony/symfony/CVE-2026-45072.yaml","tags":["web"]},{"url":"https://github.com/FriendsOfPHP/security-advisories/blob/master/symfony/twig-bridge/CVE-2026-45072.yaml","tags":["web"]},{"url":"https://github.com/FriendsOfPHP/security-advisories/blob/master/symfony/web-profiler-bundle/CVE-2026-45072.yaml","tags":["web"]},{"url":"https://symfony.com/cve-2026-45072","tags":["web"]},{"url":"https://github.com/advisories/GHSA-hmr5-2xcr-v8pp"},{"url":"https://github.com/CVEProject/cvelistV5/tree/main/cves/2026/45xxx/CVE-2026-45072.json","tags":["advisory"]},{"url":"https://nvd.nist.gov/vuln/detail/CVE-2026-45072","tags":["advisory"]},{"url":"https://security-tracker.debian.org/tracker/CVE-2026-45072","tags":["advisory"]},{"url":"https://github.com/symfony/symfony","tags":["package"]},{"url":"https://ubuntu.com/security/CVE-2026-45072","tags":["report"]},{"url":"https://www.cve.org/CVERecord?id=CVE-2026-45072","tags":["report"]},{"url":"https://symfony.com/blog/cve-2026-45072-stored-xss-in-webprofiler-codeextension-fileexcerpt-unescaped-non-php-file-rendering","tags":["report"]}],"sources":{"cve":[{"id":"CVE-2026-45072","title":"Symfony: Stored XSS in WebProfiler CodeExtension::fileExcerpt() — Unescaped Non-PHP File Rendering","description":"Symfony is a PHP framework for web and console applications and a set of reusable PHP components. From 6.4.24 until 6.4.40, 7.4.12, and 8.0.12, the development profiler file_excerpt Twig filter escapes PHP files through highlight_string() but interpolates lines from non-PHP files directly into \u003ccode\u003e elements, allowing stored XSS against a developer who opens an attacker-written file such as var/log/dev.log in the profiler. This issue is fixed in versions 6.4.40, 7.4.12, and 8.0.12.","status":"published","published":"2026-07-14T18:11:07.748Z","modified":"2026-07-15T13:26:50.587Z","cvss":[{"version":"4.0","score":2,"vector":"CVSS:4.0/AV:N/AC:L/AT:P/PR:L/UI:A/VC:N/VI:N/VA:N/SC:L/SI:L/SA:N","level":"low","assessor":"cna"}],"cwes":["CWE-79"],"updated_at":"2026-11-02T13:46:43.922571Z"}],"euvd":[{"id":"EUVD-2026-44366","description":"Symfony is a PHP framework for web and console applications and a set of reusable PHP components. From 6.4.24 until 6.4.40, 7.4.12, and 8.0.12, the development profiler file_excerpt Twig filter escapes PHP files through highlight_string() but interpolates lines from non-PHP files directly into \u003ccode\u003e elements, allowing stored XSS against a developer who opens an attacker-written file such as var/log/dev.log in the profiler. This issue is fixed in versions 6.4.40, 7.4.12, and 8.0.12.","status":"published","published":"2026-07-14T18:11:07Z","modified":"2026-07-15T13:26:50Z","cvss":[{"version":"4.0","score":2,"vector":"CVSS:4.0/AV:N/AC:L/AT:P/PR:L/UI:A/VC:N/VI:N/VA:N/SC:L/SI:L/SA:N","level":"low"}],"updated_at":"2026-11-02T18:19:53.226345Z"}],"ghsa":[{"id":"GHSA-hmr5-2xcr-v8pp","title":"Symfony Vulnerable to stored XSS in WebProfiler CodeExtension::fileExcerpt() — Unescaped Non-PHP File Rendering","description":"### Description\n\nSymfony's profiler, a development only debug UI, renders source-code excerpts on several pages using Twig's custom `file_excerpt` filter. This filter renders PHP files via `highlight_string()` (which escapes HTML), but renders **non-PHP files** by splitting on `\\n` and interpolating each line directly into `\u003ccode\u003e{$line}\u003c/code\u003e` with no escaping. \n\nAn attacker who can write arbitrary bytes into any file under the project root (including e.g. `var/log/dev.log`), achieves **stored XSS** against any developer who later opens that file in the profiler.\n\n### Resolution\n\nThe `file_excerpt` filter now properly escapes each line of non-PHP files using `htmlspecialchars()` before concatenating them.\n\nThe patch for this issue is available [here](https://github.com/symfony/symfony/commit/863aa81c61166f1aa74b7732df316f76113acbdb) for branch 6.4.\n\n### Credits\n\nSymfony would like to thank Claude Mythos Preview (via Project Glasswing) for reporting the issue and providing the fix.","status":"published","published":"2026-05-27T21:10:44Z","modified":"2026-05-27T21:10:45Z","cvss":[{"version":"4.0","score":1.2,"vector":"CVSS:4.0/AV:N/AC:L/AT:N/PR:L/UI:P/VC:N/VI:N/VA:N/SC:L/SI:L/SA:N/E:U","level":"low"}],"cwes":["CWE-79"],"updated_at":"2026-11-02T14:40:14.666177Z"}],"nvd":[{"id":"CVE-2026-45072","description":"Symfony is a PHP framework for web and console applications and a set of reusable PHP components. From 6.4.24 until 6.4.40, 7.4.12, and 8.0.12, the development profiler file_excerpt Twig filter escapes PHP files through highlight_string() but interpolates lines from non-PHP files directly into \u003ccode\u003e elements, allowing stored XSS against a developer who opens an attacker-written file such as var/log/dev.log in the profiler. This issue is fixed in versions 6.4.40, 7.4.12, and 8.0.12.","status":"published","published":"2026-07-14T19:17:06.277Z","modified":"2026-07-16T03:12:44.943Z","cvss":[{"version":"4.0","score":2,"vector":"CVSS:4.0/AV:N/AC:L/AT:P/PR:L/UI:A/VC:N/VI:N/VA:N/SC:L/SI:L/SA:N/E:X/CR:X/IR:X/AR:X/MAV:X/MAC:X/MAT:X/MPR:X/MUI:X/MVC:X/MVI:X/MVA:X/MSC:X/MSI:X/MSA:X/S:X/AU:X/R:X/V:X/RE:X/U:X","level":"low","assessor":"secondary"},{"version":"3.1","score":5.4,"vector":"CVSS:3.1/AV:N/AC:L/PR:L/UI:R/S:C/C:L/I:L/A:N","level":"medium","assessor":"primary"}],"cwes":["CWE-79"],"updated_at":"2026-11-02T14:12:29.879716Z"}],"osv":[{"id":"CVE-2026-45072","title":"Symfony: Stored XSS in WebProfiler CodeExtension::fileExcerpt() — Unescaped Non-PHP File Rendering","description":"Symfony is a PHP framework for web and console applications and a set of reusable PHP components. From 6.4.24 until 6.4.40, 7.4.12, and 8.0.12, the development profiler file_excerpt Twig filter escapes PHP files through highlight_string() but interpolates lines from non-PHP files directly into \u003ccode\u003e elements, allowing stored XSS against a developer who opens an attacker-written file such as var/log/dev.log in the profiler. This issue is fixed in versions 6.4.40, 7.4.12, and 8.0.12.","status":"published","published":"2026-07-14T18:11:07.748Z","modified":"2026-10-28T02:30:42.677342217Z","cvss":[{"version":"4.0","score":2,"vector":"CVSS:4.0/AV:N/AC:L/AT:P/PR:L/UI:A/VC:N/VI:N/VA:N/SC:L/SI:L/SA:N","level":"low"}],"cwes":["CWE-79"],"updated_at":"2026-11-02T15:45:05.172514Z"},{"id":"DEBIAN-CVE-2026-45072","description":"Symfony is a PHP framework for web and console applications and a set of reusable PHP components. From 6.4.24 until 6.4.40, 7.4.12, and 8.0.12, the development profiler file_excerpt Twig filter escapes PHP files through highlight_string() but interpolates lines from non-PHP files directly into \u003ccode\u003e elements, allowing stored XSS against a developer who opens an attacker-written file such as var/log/dev.log in the profiler. This issue is fixed in versions 6.4.40, 7.4.12, and 8.0.12.","status":"published","published":"2026-07-14T19:17:06.277Z","modified":"2026-10-01T03:03:14.566331345Z","cvss":[{"version":"3.1","score":5.4,"vector":"CVSS:3.1/AV:N/AC:L/PR:L/UI:R/S:C/C:L/I:L/A:N","level":"medium"}],"updated_at":"2026-11-02T15:45:55.669088Z"},{"id":"GHSA-hmr5-2xcr-v8pp","title":"Symfony Vulnerable to stored XSS in WebProfiler CodeExtension::fileExcerpt() — Unescaped Non-PHP File Rendering","description":"### Description\n\nSymfony's profiler, a development only debug UI, renders source-code excerpts on several pages using Twig's custom `file_excerpt` filter. This filter renders PHP files via `highlight_string()` (which escapes HTML), but renders **non-PHP files** by splitting on `\\n` and interpolating each line directly into `\u003ccode\u003e{$line}\u003c/code\u003e` with no escaping. \n\nAn attacker who can write arbitrary bytes into any file under the project root (including e.g. `var/log/dev.log`), achieves **stored XSS** against any developer who later opens that file in the profiler.\n\n### Resolution\n\nThe `file_excerpt` filter now properly escapes each line of non-PHP files using `htmlspecialchars()` before concatenating them.\n\nThe patch for this issue is available [here](https://github.com/symfony/symfony/commit/863aa81c61166f1aa74b7732df316f76113acbdb) for branch 6.4.\n\n### Credits\n\nSymfony would like to thank Claude Mythos Preview (via Project Glasswing) for reporting the issue and providing the fix.","status":"published","published":"2026-05-27T21:10:44Z","modified":"2026-09-10T03:51:06.007105097Z","cvss":[{"version":"4.0","score":1.2,"vector":"CVSS:4.0/AV:N/AC:L/AT:N/PR:L/UI:P/VC:N/VI:N/VA:N/SC:L/SI:L/SA:N/E:U","level":"low"}],"cwes":["CWE-79"],"updated_at":"2026-11-02T15:46:49.28217Z"},{"id":"UBUNTU-CVE-2026-45072","description":"Symfony is a PHP framework for web and console applications and a set of reusable PHP components. From 6.4.24 until 6.4.40, 7.4.12, and 8.0.12, the development profiler file_excerpt Twig filter escapes PHP files through highlight_string() but interpolates lines from non-PHP files directly into \u003ccode\u003e elements, allowing stored XSS against a developer who opens an attacker-written file such as var/log/dev.log in the profiler. This issue is fixed in versions 6.4.40, 7.4.12, and 8.0.12.","status":"published","published":"2026-07-14T19:17:00Z","modified":"2026-10-17T13:00:11.808953773Z","cvss":[{"version":"4.0","score":2,"vector":"CVSS:4.0/AV:N/AC:L/AT:P/PR:L/UI:A/VC:N/VI:N/VA:N/SC:L/SI:L/SA:N","level":"low"},{"version":"3.1","score":5.4,"vector":"CVSS:3.1/AV:N/AC:L/PR:L/UI:R/S:C/C:L/I:L/A:N","level":"medium"}],"updated_at":"2026-11-02T16:56:26.396868Z"}]}}