CVE-2026-50188

unknowncovered by 1 sourcefirst seen 2026-07-09

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.

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Exploitation outlook

Low exploitation risk0.29% 30-day exploitation probability — currently an unlikely target, but scores change as exploit code circulates. Riskier than 21% of all EPSS-scored CVEs.

Advisory coverage (1)

unknownCVE-2026-50188: Kirby is an open-source content management system. Prior to 4.9.4 and 5.4.4, Kirby sites and p…nvd · 2026-07-09

External references

NVD record for CVE-2026-50188

CVE.org record

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