{"id":"GHSA-5vpg-rj7q-qpw2","aliases":["CVE-2026-39850"],"title":"Yii 2: Local file inclusion via view parameter name collision","description":"The core view rendering method `View::renderPhpFile()` calls `extract($_params_, EXTR_OVERWRITE)` before the `require` statement that includes the view file. A caller-controlled parameter named `_file_` in the `$params` array overwrites the internal local variable that specifies which file is included — enabling a Local File Inclusion primitive.\n\n### Impact\n\n- Local File Inclusion (arbitrary file read via non-PHP files)\n- Potential RCE if attacker can write PHP files via a separate primitive\n- Information disclosure\n\n### Patches\n\n2.0.55\n\n### Workarounds\n\nNo.","severity":"high","score":7.4,"published":"2026-05-11T19:34:28.000Z","modified":"2026-09-10T03:51:04.769Z","withdrawn":false,"knownExploited":false,"affected":[{"ecosystem":"Packagist","name":"yiisoft/yii2","ranges":[{"events":[{"introduced":"0"},{"fixed":"2.0.55"}],"type":"ECOSYSTEM"}],"versions":["2.0.0","2.0.0-alpha","2.0.0-beta","2.0.0-rc","2.0.1","2.0.10","2.0.11","2.0.11.1","2.0.11.2","2.0.12","2.0.12.1","2.0.12.2","2.0.13","2.0.13.1","2.0.13.2","2.0.13.3","2.0.14","2.0.14.1","2.0.14.2","2.0.15","2.0.15.1","2.0.16","2.0.16.1","2.0.17","2.0.18","2.0.19","2.0.2","2.0.20","2.0.21","2.0.22","2.0.23","2.0.24","2.0.25","2.0.26","2.0.27","2.0.28","2.0.29","2.0.3","2.0.30","2.0.31","2.0.32","2.0.33","2.0.34","2.0.35","2.0.36","2.0.37","2.0.38","2.0.39","2.0.39.1","2.0.39.2","2.0.39.3","2.0.4","2.0.40","2.0.41","2.0.41.1","2.0.42","2.0.42.1","2.0.43","2.0.44","2.0.45","2.0.46","2.0.47","2.0.48","2.0.48.1","2.0.49","2.0.49.1","2.0.49.2","2.0.49.3","2.0.49.4","2.0.5","2.0.50","2.0.51","2.0.52","2.0.53","2.0.54","2.0.6","2.0.7","2.0.8","2.0.9"],"fixed":["2.0.55"]}],"references":["https://github.com/yiisoft/yii2/security/advisories/GHSA-5vpg-rj7q-qpw2","https://nvd.nist.gov/vuln/detail/CVE-2026-39850","https://github.com/yiisoft/yii2/commit/109878b491dbffa541032bc99fb5e26d12cd0375","https://github.com/yiisoft/yii2","https://github.com/yiisoft/yii2/releases/tag/2.0.55"],"sources":[{"name":"OSV","id":"GHSA-5vpg-rj7q-qpw2","modified":"2026-09-10T03:51:04.769218547Z","url":"https://osv.dev/vulnerability/GHSA-5vpg-rj7q-qpw2"}],"assessments":[{"source":"OSV","vector":"CVSS:3.1/AV:N/AC:H/PR:N/UI:N/S:U/C:H/I:H/A:N","score":7.4}]}