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Vulnerability record · CVE-2026-42552 · published 13 May 2026

CVE-2026-42552: Error message information leak vulnerability

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.

7.5 CVSS 3.1 High EPSS 0.42% · top 66.7% CWE-209 · Error message information leak Deferred
7.5CVSS 3.1 base score
0.42%EPSS exploitation probability, 30 days
NoNot in CISA KEV
0Affected product versions listed by NVD
2References
17 Jun 2026Last modified by NVD

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.

CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:N/A:N

References

LinkTags
https://github.com/flightphp/core/security/advisories/GHSA-qrch-52m5-vv85
https://github.com/flightphp/core/security/advisories/GHSA-qrch-52m5-vv85

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Source: NIST National Vulnerability Database (record CVE-2026-42552), CISA KEV, FIRST EPSS (scores of 2026-09-27). This page is refreshed as NVD updates the record.