Medium severity4.4GHSA Advisory· Published May 13, 2026· Updated May 14, 2026
CVE-2026-42549
CVE-2026-42549
Description
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.
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Affected packages
Versions sourced from the GitHub Security Advisory.
| Package | Affected versions | Patched versions |
|---|---|---|
flightphp/corePackagist | < 3.18.1 | 3.18.1 |
Affected products
2Patches
Vulnerability mechanics
References
3News mentions
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