CVE-2026-50188
MEDIUM
6.9
CVSS 4.0
Description
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.
Metadata
Severity & Metrics
6.9
MEDIUM CVSS 4.0
CVSS:4.0/AV:N/AC:H/AT:N/PR:N/UI:N/VC:N/VI:N/VA:N/SC:N/SI:H/SA:N
SSVC — CISA Coordinator
Affected products (1)
| Vendor | Product | Platform | Versions |
|---|---|---|---|
| getkirby | kirby | — | < 4.9.4, >= 5.0.0, < 5.4.4 |
Weakness (CWE)
CVSS scores (1)
| Score | Severity | Version | Source | Vector |
|---|---|---|---|---|
| 6.9 | MEDIUM | 4.0 | cna | CVSS:4.0/AV:N/AC:H/AT:N/PR:N/UI:N/VC:N/VI:N/VA:N/SC:N/SI:H/SA:N |
References (5)
- https://github.com/getkirby/kirby/security/advisories/GHSA-4v4h-m2qq-ppgw https://github.com/getkirby/kirby/security/advisories/GHSA-4v4h-m2qq-ppgw
- https://github.com/getkirby/kirby/commit/aa33414e1669e866cdd6f4decfae2a669e8bb828 https://github.com/getkirby/kirby/commit/aa33414e1669e866cdd6f4decfae2a669e8bb828
- https://github.com/getkirby/kirby/commit/fad9cbd22c73ed0fbd3aaf62310a8dcacfc007cd https://github.com/getkirby/kirby/commit/fad9cbd22c73ed0fbd3aaf62310a8dcacfc007cd
- https://github.com/getkirby/kirby/releases/tag/4.9.4 https://github.com/getkirby/kirby/releases/tag/4.9.4
- https://github.com/getkirby/kirby/releases/tag/5.4.4 https://github.com/getkirby/kirby/releases/tag/5.4.4