CVE-2026-42549
Flight is an extensible micro-framework for PHP. Prior to 3.18.1, the make:controller CLI command calls mkdir(..., recursive: true) on a path built from the user-supplied controller name, before Nette's class-name validation runs. The class-file write is correctly rejected by Nette when the name contains /, but the recursive directory creation side effect is already committed — including directories located outside the project root through ../ traversal. This vulnerability is fixed in 3.18.1.
- Score
- CVSS 3.1 4.4 Medium
- Status
- Deferred - security-advisories@github.com
- Published
- 2026-05-13
- Last modified
- 2026-10-26
- Weaknesses
- CWE-22
Affected products
References
- https://github.com/flightphp/core/security/advisories/GHSA-3xjv-pmf2-gf2q
