CVE-2026-42549— Flight: Path traversal in `make:controller` CLI creates arbitrary directories outside project root
Possible ATT&CK Techniques 1AI
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I. Basic Information for CVE-2026-42549
Vulnerability Information
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Vulnerability Title
Flight: Path traversal in `make:controller` CLI creates arbitrary directories outside project root
Source: NVD (National Vulnerability Database)
Vulnerability 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.
Source: NVD (National Vulnerability Database)
CVSS Information
CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:N/I:L/A:L
Source: NVD (National Vulnerability Database)
Vulnerability Type
对路径名的限制不恰当(路径遍历)
Source: NVD (National Vulnerability Database)
Vulnerability Title
Flight 路径遍历漏洞
Source: CNNVD (China National Vulnerability Database)
Vulnerability Description
Flight是Mike Cao个人开发者的一个PHP微框架。 Flight 3.18.1之前版本存在路径遍历漏洞，该漏洞源于make:controller CLI命令在类名验证前，基于用户提供的控制器名称创建目录，可能导致通过../遍历在项目根目录外创建目录。
Source: CNNVD (China National Vulnerability Database)
CVSS Information
N/A
Source: CNNVD (China National Vulnerability Database)
Vulnerability Type
N/A
Source: CNNVD (China National Vulnerability Database)
Affected Products
II. Public POCs for CVE-2026-42549
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- https://github.com/flightphp/core/security/advisories/GHSA-3xjv-pmf2-gf2qx_refsource_CONFIRM
- https://nvd.nist.gov/vuln/detail/CVE-2026-42549
Same Patch Batch · flightphp · 2026-05-13 · 5 CVEs total
| CVE-2026-42550 | 8.8 HIGH | Flight: SQL Injection via unvalidated identifiers in SimplePdo::insert / update / delete |
| CVE-2026-42552 | 7.5 HIGH | Flight: Sensitive information disclosure via default error handler in flightphp/core |
| CVE-2026-42551 | 7.5 HIGH | Flight: HTTP method override enabled by default enables CSRF escalation and middleware byp |
| CVE-2026-42548 | Flight: Reflected XSS via unvalidated JSONP callback in Flight::jsonp() |
IV. Related Vulnerabilities
Same product: core
- CVE-2026-45158
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OPNsense: RCE on user managment - CVE-2026-44195
OPNsense: Authentication lockout bypass - CVE-2026-44193
OPNsense: RCE via XMLRPC endpoint using `opnsense.restore_co - CVE-2026-42552
Flight: Sensitive information disclosure via default error h
Same vendor: flightphp
- CVE-2026-42552
Flight: Sensitive information disclosure via default error h - CVE-2026-42551
Flight: HTTP method override enabled by default enables CSRF - CVE-2026-42550
Flight: SQL Injection via unvalidated identifiers in SimpleP - CVE-2026-42548
Flight: Reflected XSS via unvalidated JSONP callback in Flig - CVE-2014-125127
Denial of Service (DoS) vulnerability in mikecao/flight
Same weakness: CWE-22
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V. Comments for CVE-2026-42549
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