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CVE-2026-42552— Flight: Sensitive information disclosure via default error handler in flightphp/core

Quick assessment

Affected
flightphp core
Exploitation
No confirmed in-the-wild exploitation; assess based on exposure
Recommended action
Check the vendor advisory and references for a fixed version. If immediate upgrade is impossible, restrict exposure and increase monitoring.

Flight是Mike Cao个人开发者的一个PHP微框架。 Flight 3.18.1之前版本存在安全漏洞，该漏洞源于默认错误处理程序Engine::_error()将完整异常信息写入HTTP 500响应，未进行调试门控，可能导致内部路径和秘密泄露。

CVSS 7.5 · High EPSS 0.42% · P34

Affected Version Matrix 1

VendorProduct Version RangeStatus
flightphp core < 3.18.1 affected
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I. Basic Information for CVE-2026-42552

Vulnerability Information
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Vulnerability Title
Flight: Sensitive information disclosure via default error handler in flightphp/core
Source: CVE Program / CVE List V5
Vulnerability Description
Flight is an extensible micro-framework for PHP. Prior to 3.18.1, the default error handler Engine::_error() writes the full exception message, exception code, and stack trace (including absolute filesystem paths) directly into the HTTP 500 response, with no debug gating. Production deployments leak internal paths, any secret interpolated into an exception message, and full module structure — giving attackers primitives for chaining other weaknesses (LFI, path traversal). This vulnerability is fixed in 3.18.1.
Source: CVE Program / CVE List V5
CVSS Information
CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:N/A:N
Source: CVE Program / CVE List V5
Vulnerability Type
通过错误消息导致的信息暴露
Source: CVE Program / CVE List V5
Vulnerability Title
Flight 安全漏洞
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之前版本存在安全漏洞，该漏洞源于默认错误处理程序Engine::_error()将完整异常信息写入HTTP 500响应，未进行调试门控，可能导致内部路径和秘密泄露。
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

Vendor Product Affected Versions CPE Subscribe
flightphp core < 3.18.1 -

II. Public POCs for CVE-2026-42552

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III. Intelligence Information for CVE-2026-42552

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Vendor Advisories for CVE-2026-42552 (1)

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-2026-42551 7.5 HIGH Flight: HTTP method override enabled by default enables CSRF escalation and middleware byp
CVE-2026-42549 4.4 MEDIUM Flight: Path traversal in `make:controller` CLI creates arbitrary directories outside proj
CVE-2026-42548 Flight: Reflected XSS via unvalidated JSONP callback in Flight::jsonp()

IV. Related Vulnerabilities

Same product: core
Same vendor: flightphp
Same weakness: CWE-209

V. Comments for CVE-2026-42552

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