What’s Vulnerable › Vulnerabilities

CVE-2026-42549: Flight: Path traversal in `make:controller` CLI creates arbitrary directories outside project root

• Severity: medium (CVSS 4.4 v3.1)
• Exploited in the wild: not listed in CISA KEV
• EPSS: 0.2% probability of exploitation in the next 30 days
• Public exploit or detection template: none known
• Published: 2026-05-13 · updated 2026-10-26
• Weakness: CWE-22

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.

Affected products

• flightphp core: before 3.18.1

References

• https://github.com/flightphp/core/security/advisories/GHSA-3xjv-pmf2-gf2q
• https://github.com/flightphp/core/security/advisories/GHSA-3xjv-pmf2-gf2q

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