CVE-2026-50188
Kirby: Request header injection in `Http\Remote`
CVSS Score
0.0
EPSS Score
0.0%
EPSS Percentile
0th
Kirby is an open-source content management system. Prior to 4.9.4 and 5.4.4, Kirby sites and plugins using the Kirby Http Remote class, including Remote::request(), Remote::get(), and Remote::post(), to send outgoing HTTP requests with untrusted data in the headers option could allow newline characters in a header value to inject a separate unintended request header to the remote service. This issue is fixed in versions 4.9.4 and 5.4.4.
| CWE | CWE-93 CWE-113 |
| Vendor | getkirby |
| Product | kirby |
| Published | Jul 9, 2026 |
| Last Updated | Jul 9, 2026 |
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Affected Versions
getkirby / kirby
< 4.9.4 >= 5.0.0, < 5.4.4
References
github.com: https://github.com/getkirby/kirby/security/advisories/GHSA-4v4h-m2qq-ppgw github.com: https://github.com/getkirby/kirby/commit/aa33414e1669e866cdd6f4decfae2a669e8bb828 github.com: https://github.com/getkirby/kirby/commit/fad9cbd22c73ed0fbd3aaf62310a8dcacfc007cd github.com: https://github.com/getkirby/kirby/releases/tag/4.9.4 github.com: https://github.com/getkirby/kirby/releases/tag/5.4.4