yiisoft/yii2 · Security
Yii 2: Local file inclusion via view parameter name collision
- GHSA ID
- GHSA-5vpg-rj7q-qpw2
- CVE ID
- CVE-2026-39850
- Severity
- high
- Published
- Updated
- CVSS
- 7.4 · CVSS:3.1/AV:N/AC:H/PR:N/UI:N/S:U/C:H/I:H/A:N
- CVSS v3
- 7.4 · CVSS:3.1/AV:N/AC:H/PR:N/UI:N/S:U/C:H/I:H/A:N
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.
Impact
- Local File Inclusion (arbitrary file read via non-PHP files)
- Potential RCE if attacker can write PHP files via a separate primitive
- Information disclosure
Patches
2.0.55
Workarounds
No.
CWEs
- CWE-20 · Improper Input Validation
- CWE-98 · Improper Control of Filename for Include/Require Statement in PHP Program ('PHP Remote File Inclusion')
References
- https://github.com/yiisoft/yii2/security/advisories/GHSA-5vpg-rj7q-qpw2 ↗
- https://github.com/yiisoft/yii2/commit/109878b491dbffa541032bc99fb5e26d12cd0375 ↗
- https://github.com/yiisoft/yii2/releases/tag/2.0.55 ↗
- https://nvd.nist.gov/vuln/detail/CVE-2026-39850 ↗
- https://github.com/advisories/GHSA-5vpg-rj7q-qpw2 ↗