CVE-2026-103475 yii2-starter-kit through 4.2.0 Debug and Gii Module Exposure
Default configuration exposes debug and Gii modules, allowing attackers to read sensitive data or execute code via file generation.
- Exploited in the wild
- Not known
- Login needed
- Not needed
- Attackable
- Over the internet
- Victim action needed
- Not needed
- Fix
- None listed
What is CVE-2026-103475?
CVE-2026-103475 is a critical vulnerability in yii2-starter-kit, published on 30 Sep 2026. An attacker can exploit it over the internet without logging in, with no action from the victim.
Official description
yii2-starter-kit through 4.2.0 exposes the Yii debug and Gii modules to all IP addresses by setting allowedIPs to ['*'] in its default development configuration. Unauthenticated remote attackers can access the debug endpoint to read sensitive data including session cookies and database queries, or access the Gii endpoint to generate and write PHP files into the application directory.
Weakness: CWE-489
Which versions are affected by CVE-2026-103475?
How do I fix CVE-2026-103475?
No fix has been published for CVE-2026-103475 yet. Limit exposure of the affected software until one is available.
Is CVE-2026-103475 being exploited?
There is no known exploitation of CVE-2026-103475 in the wild and no public exploit code.
Sources
Also known as GHSA-92vv-q57x-j4vj.