CVE-2026-50188
CVE-2026-50188 · Kirby: Request header injection in `Http\Remote`
This page contains facts from public vulnerability sources. Check the original advisory before updating.
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.
CVSS 6.9 · Medium · EPSS 0.4% · Fix available
- Published
- Updated
Stack: php
Affected products and versions
kirby
- Versions
- < 4.9.4: Affected
- >= 5.0.0, < 5.4.4: Affected
No fix published
getkirby/cms Packagist
- Versions
- 3.0.0
- 3.0.1
- 3.0.1-rc.1
- 3.0.2
- 3.0.2-rc.1
- 3.0.3
- 3.0.3-rc.1
- 3.0.3-rc.2
- 3.0.3-rc.3
- 3.1.0
- 3.1.0-rc.1
- 3.1.1
- 3.1.2
- 3.1.2-rc.1
- 3.1.3
- 3.1.3-rc.1
- 3.1.4
- 3.1.4-rc.1
- 3.10.0
- 3.10.0.1
- 3.10.1
- 3.10.1.1
- 3.10.1.2
- 3.2.0
- 3.2.0-rc.1
- 3.2.0-rc.2
- 3.2.0-rc.3
- 3.2.0-rc.4
- 3.2.1
- 3.2.1-rc.1
- 3.2.2
- 3.2.3
- 3.2.3-rc.1
- 3.2.4
- 3.2.4-rc.1
- 3.2.5
- 3.2.5-rc.1
- 3.2.5-rc.2
- 3.3.0
- 3.3.0-rc.1
- 3.3.0-rc.2
- 3.3.0-rc.3
- 3.3.0-rc.4
- 3.3.0-rc.5
- 3.3.1
- 3.3.1-rc.1
- 3.3.2
- 3.3.2-rc.1
- 3.3.3
- 3.3.3-rc.1
- 3.3.4
- 3.3.4-rc.1
- 3.3.5
- 3.3.5-rc.1
- 3.3.6
- 3.4.0
- 3.4.0-rc.1
- 3.4.0-rc.2
- 3.4.0-rc.3
- 3.4.1
- 3.4.1-rc.1
- 3.4.2
- 3.4.3
- 3.4.3-rc.1
- 3.4.4
- 3.4.4-rc.1
- 3.4.5
- 3.5.0
- 3.5.0-rc.1
- 3.5.0-rc.2
- 3.5.0-rc.3
- 3.5.0-rc.4
- 3.5.0-rc.5
- 3.5.0-rc.6
- 3.5.0-rc.7
- 3.5.1
- 3.5.1-rc.1
- 3.5.2
- 3.5.2-rc.1
- 3.5.3
- 3.5.3.1
- 3.5.4
- 3.5.5
- 3.5.5-rc.1
- 3.5.6
- 3.5.6-rc.1
- 3.5.7
- 3.5.7-rc.1
- 3.5.7.1
- 3.5.8
- 3.5.8.1
- 3.5.8.2
- 3.5.8.3
- 3.5.8.4
- 3.6.0
- 3.6.0-alpha.1
- 3.6.0-alpha.2
- 3.6.0-alpha.3
- 3.6.0-alpha.4
- 3.6.0-beta.1
- 3.6.0-beta.2
- 3.6.0-beta.3
- 3.6.0-rc.1
- 3.6.0-rc.2
- 3.6.0-rc.3
- 3.6.0-rc.4
- 3.6.0-rc.5
- 3.6.1
- 3.6.1.1
- 3.6.2
- 3.6.2-rc.1
- 3.6.2-rc.2
- 3.6.2-rc.3
- 3.6.3
- 3.6.3-rc.1
- 3.6.3-rc.2
- 3.6.3.1
- 3.6.4
- 3.6.4-rc.1
- 3.6.5
- 3.6.5-rc.1
- 3.6.6
- 3.6.6-rc.1
- 3.6.6.1
- 3.6.6.2
- 3.6.6.3
- 3.6.6.4
- 3.6.6.5
- 3.6.6.6
- 3.7.0
- 3.7.0-rc.1
- 3.7.0-rc.2
- 3.7.0-rc.3
- 3.7.0.1
- 3.7.0.2
- 3.7.1
- 3.7.1-rc.1
- 3.7.2
- 3.7.2-rc.1
- 3.7.2.1
- 3.7.3
- 3.7.3-rc.1
- 3.7.4
- 3.7.4-rc.1
- 3.7.5
- 3.7.5.1
- 3.7.5.2
- 3.7.5.3
- 3.7.5.4
- 3.7.5.5
- 3.8.0
- 3.8.0-rc.1
- 3.8.0-rc.2
- 3.8.0-rc.3
- 3.8.1
- 3.8.1-rc.1
- 3.8.1.1
- 3.8.2
- 3.8.2-rc.1
- 3.8.3
- 3.8.3-rc.1
- 3.8.3-rc.2
- 3.8.4
- 3.8.4.1
- 3.8.4.2
- 3.8.4.3
- 3.8.4.4
- 3.9.0
- 3.9.0-rc.1
- 3.9.0-rc.2
- 3.9.1
- 3.9.1-rc.1
- 3.9.2
- 3.9.2-rc.1
- 3.9.3
- 3.9.3-rc.1
- 3.9.4
- 3.9.4-rc.1
- 3.9.5
- 3.9.5-rc.1
- 3.9.6
- 3.9.6-rc.1
- 3.9.6.1
- 3.9.7
- 3.9.7-rc.1
- 3.9.8
- 3.9.8-rc.1
- 3.9.8.1
- 3.9.8.2
- 3.9.8.3
- 4.0.0
- 4.0.0-alpha.1
- 4.0.0-alpha.2
- 4.0.0-alpha.3
- 4.0.0-alpha.4
- 4.0.0-alpha.5
- 4.0.0-alpha.6
- 4.0.0-alpha.7
- 4.0.0-beta.1
- 4.0.0-beta.2
- 4.0.0-beta.3
- 4.0.0-rc.1
- 4.0.0-rc.2
- 4.0.0-rc.3
- 4.0.0-rc.4
- 4.0.1
- 4.0.2
- 4.0.3
- 4.1.0
- 4.1.0-rc.1
- 4.1.0-rc.2
- 4.1.0-rc.3
- 4.1.1
- 4.1.2
- 4.2.0
- 4.2.0-rc.1
- 4.3.0
- 4.3.0-rc.1
- 4.3.1
- 4.4.0
- 4.4.0-rc.1
- 4.4.1
- 4.5.0
- 4.5.0-rc.1
- 4.6.0
- 4.6.0-rc.1
- 4.6.1
- 4.7.0
- 4.7.0-rc.1
- 4.7.1
- 4.7.2
- 4.8.0
- 4.8.0-rc.1
- 4.9.0
- 4.9.1
- 4.9.2
- 4.9.3
- Affected ranges
- ECOSYSTEM: < 4.9.4
Update to 4.9.4
getkirby/cms Packagist
- Versions
- 5.0.0
- 5.0.0-alpha.1
- 5.0.0-alpha.2
- 5.0.0-alpha.3
- 5.0.0-alpha.4
- 5.0.0-beta.1
- 5.0.0-beta.2
- 5.0.0-beta.3
- 5.0.0-beta.4
- 5.0.0-beta.5
- 5.0.0-beta.6
- 5.0.0-rc.1
- 5.0.0-rc.2
- 5.0.0-rc.3
- 5.0.0-rc.4
- 5.0.0-rc.5
- 5.0.0-rc.6
- 5.0.1
- 5.0.2
- 5.0.3
- 5.0.4
- 5.1.0
- 5.1.0-rc.1
- 5.1.1
- 5.1.2
- 5.1.3
- 5.1.4
- 5.2.0
- 5.2.0-rc.1
- 5.2.1
- 5.2.2
- 5.2.3
- 5.3.0
- 5.3.0-rc.1
- 5.3.1
- 5.3.2
- 5.3.3
- 5.4.0
- 5.4.1
- 5.4.2
- 5.4.3
- Affected ranges
- ECOSYSTEM: ≥ 5.0.0-alpha.1, < 5.4.4
Update to 5.4.4
Original sources
- https://github.com/getkirby/kirby/security/advisories/GHSA-4v4h-m2qq-ppgw
- https://github.com/getkirby/kirby/commit/aa33414e1669e866cdd6f4decfae2a669e8bb828
- https://github.com/getkirby/kirby/commit/fad9cbd22c73ed0fbd3aaf62310a8dcacfc007cd
- https://github.com/getkirby/kirby/releases/tag/4.9.4
- https://github.com/getkirby/kirby/releases/tag/5.4.4
- https://nvd.nist.gov/vuln/detail/CVE-2026-50188