{"id":"CVE-2026-44503","revision":"0f2964c32f1f426b88c0610976a0cb6f","records":[{"revision":"0f2964c32f1f426b88c0610976a0cb6f","observedAt":"2026-10-23T15:48:27.903+00:00","statement":{"source":"cve-program","id":"CVE-2026-44503","aliases":[],"title":"Kiota abstractions RedirectHandler leaks Cookie/Proxy-Authorization headers on cross-host redirect","description":"The RedirectHandler middleware in microsoft/kiota-java (com.microsoft.kiota:microsoft-kiota-http-okHttp v1.9.0) and other Kiota libraries fails to strip sensitive HTTP headers when following 3xx redirects to a different host or scheme. Only the Authorization header is removed; Cookie, Proxy-Authorization, and all custom headers are forwarded to the redirect target.","state":0,"publishedAt":"2026-05-14T15:58:57.772+00:00","modifiedAt":"2026-05-14T19:51:10.682+00:00","affected":[{"ecosystem":"Vendor product","name":"kiota-java","ranges":[],"versions":[],"rawVersionEvidence":"{\n                    \"vendor\": \"microsoft\",\n                    \"product\": \"kiota-java\",\n                    \"versions\": [\n                        {\n                            \"version\": \"< 1.9.1\",\n                            \"status\": \"affected\"\n                        }\n                    ]\n                }"},{"ecosystem":"Vendor product","name":"Microsoft.Kiota.Abstractions","ranges":[],"versions":[],"rawVersionEvidence":"{\n                    \"vendor\": \"microsoft\",\n                    \"product\": \"Microsoft.Kiota.Abstractions\",\n                    \"versions\": [\n                        {\n                            \"version\": \"< 1.22.0\",\n                            \"status\": \"affected\"\n                        }\n                    ]\n                }"},{"ecosystem":"Vendor product","name":"github.com/microsoft/kiota-http-go","ranges":[],"versions":[],"rawVersionEvidence":"{\n                    \"vendor\": \"microsoft\",\n                    \"product\": \"github.com/microsoft/kiota-http-go\",\n                    \"versions\": [\n                        {\n                            \"version\": \"< 1.5.5\",\n                            \"status\": \"affected\"\n                        }\n                    ]\n                }"},{"ecosystem":"Vendor product","name":"kiota-typescript","ranges":[],"versions":[],"rawVersionEvidence":"{\n                    \"vendor\": \"microsoft\",\n                    \"product\": \"kiota-typescript\",\n                    \"versions\": [\n                        {\n                            \"version\": \"< 1.0.0-preview.100\",\n                            \"status\": \"affected\"\n                        }\n                    ]\n                }"},{"ecosystem":"Vendor product","name":"microsoft-kiota-abstractions","ranges":[],"versions":[],"rawVersionEvidence":"{\n                    \"vendor\": \"microsoft\",\n                    \"product\": \"microsoft-kiota-abstractions\",\n                    \"versions\": [\n                        {\n                            \"version\": \"< 1.9.1\",\n                            \"status\": \"affected\"\n                        }\n                    ]\n                }"},{"ecosystem":"Vendor product","name":"microsoft-kiota-http","ranges":[],"versions":[],"rawVersionEvidence":"{\n                    \"vendor\": \"microsoft\",\n                    \"product\": \"microsoft-kiota-http\",\n                    \"versions\": [\n                        {\n                            \"version\": \"< 1.9.9\",\n                            \"status\": \"affected\"\n                        }\n                    ]\n                }"}],"metrics":[{"system":"CVSS 4.0","vector":"CVSS:4.0/AV:N/AC:L/AT:P/PR:N/UI:P/VC:H/VI:N/VA:N/SC:H/SI:N/SA:N","score":7,"severity":"HIGH"}],"references":["https://github.com/microsoft/kiota-java/security/advisories/GHSA-7j59-v9qr-6fq9"],"sourceUrl":"https://www.cve.org/CVERecord?id=CVE-2026-44503","license":"CVE Program Terms of Use","key":"cve-program:CVE-2026-44503","identifiers":["CVE-2026-44503"]},"retained":false,"historicalAffected":[]}],"coverage":[]}