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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.

PUBLISHED Reserved 2026-04-28 | Published 2026-05-13 | Updated 2026-05-15 | Assigner GitHub_M




HIGH: 7.5CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:N/A:N

Problem types

CWE-209: Generation of Error Message Containing Sensitive Information

Product status

< 3.18.1
affected

References

github.com/...p/core/security/advisories/GHSA-qrch-52m5-vv85 exploit

github.com/...p/core/security/advisories/GHSA-qrch-52m5-vv85

cve.org (CVE-2026-42552)

nvd.nist.gov (CVE-2026-42552)

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