CVE-2026-42552
High
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.
SeverityHigh
CVSS7.5
Exploit probability—
ProductFlightphp/core
PublishedMay 13, 2026
First seenMay 13, 2026
Weakness typeCWE-209CWE-209
How to fix
Update
- flightphp/core3.18.1 or later
Affected products
| Product | Affected versions | Fixed in |
|---|---|---|
| flightphp/corePackagist | v < 3.18.1 | 3.18.1 |
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