{"id":"CVE-2026-50188","state":"PUBLISHED","title":"Kirby: Request header injection in `Http\\Remote`","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.","publishedAt":"2026-07-09T18:44:56.901Z","updatedAt":"2026-07-09T19:20:56.407Z","severity":{"score":6.9,"label":"Medium","version":"4.0","vector":"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","source":"GitHub_M"},"assigner":"GitHub_M","products":["getkirby kirby"],"affected":[{"vendor":"getkirby","product":"kirby","versions":[{"version":"< 4.9.4","status":"affected"},{"version":">= 5.0.0, < 5.4.4","status":"affected"}]}],"references":["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"],"weaknesses":["CWE-93","CWE-113"],"ingestedAt":"2026-10-29T20:12:16.098Z","source":{"repository":"CVEProject/cvelistV5","path":"cves/2026/50xxx/CVE-2026-50188.json","commit":"556c9d3a8cd17e218bb8e452ba7cd619a384ff47"},"raw":{"dataType":"CVE_RECORD","dataVersion":"5.2","cveMetadata":{"cveId":"CVE-2026-50188","state":"PUBLISHED","datePublished":"2026-07-09T18:44:56.901Z","dateUpdated":"2026-07-09T19:20:56.407Z","assignerShortName":"GitHub_M","assignerOrgId":"a0819718-46f1-4df5-94e2-005712e83aaa","dateReserved":"2026-06-03T22:05:13.645Z"},"containers":{"cna":{"title":"Kirby: Request header injection in `Http\\Remote`","descriptions":[{"lang":"en","value":"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."}],"affected":[{"vendor":"getkirby","product":"kirby","versions":[{"version":"< 4.9.4","status":"affected"},{"version":">= 5.0.0, < 5.4.4","status":"affected"}]}],"references":[{"url":"https://github.com/getkirby/kirby/security/advisories/GHSA-4v4h-m2qq-ppgw","name":"https://github.com/getkirby/kirby/security/advisories/GHSA-4v4h-m2qq-ppgw","tags":["x_refsource_CONFIRM"]},{"url":"https://github.com/getkirby/kirby/commit/aa33414e1669e866cdd6f4decfae2a669e8bb828","name":"https://github.com/getkirby/kirby/commit/aa33414e1669e866cdd6f4decfae2a669e8bb828","tags":["x_refsource_MISC"]},{"url":"https://github.com/getkirby/kirby/commit/fad9cbd22c73ed0fbd3aaf62310a8dcacfc007cd","name":"https://github.com/getkirby/kirby/commit/fad9cbd22c73ed0fbd3aaf62310a8dcacfc007cd","tags":["x_refsource_MISC"]},{"url":"https://github.com/getkirby/kirby/releases/tag/4.9.4","name":"https://github.com/getkirby/kirby/releases/tag/4.9.4","tags":["x_refsource_MISC"]},{"url":"https://github.com/getkirby/kirby/releases/tag/5.4.4","name":"https://github.com/getkirby/kirby/releases/tag/5.4.4","tags":["x_refsource_MISC"]}],"metrics":[{"cvssV4_0":{"attackVector":"NETWORK","attackComplexity":"HIGH","attackRequirements":"NONE","privilegesRequired":"NONE","userInteraction":"NONE","vulnConfidentialityImpact":"NONE","vulnIntegrityImpact":"NONE","vulnAvailabilityImpact":"NONE","subConfidentialityImpact":"NONE","subIntegrityImpact":"HIGH","subAvailabilityImpact":"NONE","baseScore":6.9,"baseSeverity":"MEDIUM","vectorString":"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","version":"4.0"}}],"problemTypes":[{"descriptions":[{"cweId":"CWE-93","lang":"en","description":"CWE-93: Improper Neutralization of CRLF Sequences ('CRLF Injection')","type":"CWE"}]},{"descriptions":[{"cweId":"CWE-113","lang":"en","description":"CWE-113: Improper Neutralization of CRLF Sequences in HTTP Headers ('HTTP Request/Response Splitting')","type":"CWE"}]}],"providerMetadata":{"shortName":"GitHub_M","orgId":"a0819718-46f1-4df5-94e2-005712e83aaa","dateUpdated":"2026-07-09T18:45:50.558Z"},"source":{"advisory":"GHSA-4v4h-m2qq-ppgw","discovery":"UNKNOWN"}},"adp":[{"title":"CISA ADP Vulnrichment","metrics":[{"other":{"type":"ssvc","content":{"timestamp":"2026-07-09T19:18:33.304762Z","id":"CVE-2026-50188","options":[{"Exploitation":"none"},{"Automatable":"no"},{"Technical Impact":"partial"}],"role":"CISA Coordinator","version":"2.0.3"}}}],"providerMetadata":{"shortName":"CISA-ADP","orgId":"134c704f-9b21-4f2e-91b3-4a467353bcc0","dateUpdated":"2026-07-09T19:20:56.407Z"}}]}}}