High severity7.5GHSA Advisory· Published May 13, 2026· Updated May 15, 2026
CVE-2026-42552
CVE-2026-42552
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.
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Affected packages
Versions sourced from the GitHub Security Advisory.
| Package | Affected versions | Patched versions |
|---|---|---|
flightphp/corePackagist | < 3.18.1 | 3.18.1 |
Affected products
2Patches
Vulnerability mechanics
References
5- github.com/advisories/GHSA-qrch-52m5-vv85ghsaADVISORY
- nvd.nist.gov/vuln/detail/CVE-2026-42552ghsaADVISORY
- github.com/flightphp/core/commit/b8dd23aaa828cb289fa3c84e75b2a3717cab50b0ghsaWEB
- github.com/flightphp/core/releases/tag/v3.18.1ghsaWEB
- github.com/flightphp/core/security/advisories/GHSA-qrch-52m5-vv85nvdWEB
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