{"items":[{"id":"NVI-00015204","kind":"vulnerability","title":"Kiota abstractions RedirectHandler leaks Cookie/Proxy-Authorization headers on cross-host redirect","revision":2,"unknowns":["Customer inventory, deployment, reachability and exploitation have not been inspected.","NVD lastModified does not establish freshness of every associated CPE record."],"lifecycle":"active","identifiers":["GHSA-7j59-v9qr-6fq9","CVE-2026-44503"],"plain_summary":"GitHub lists this reviewed advisory for com.microsoft.kiota:microsoft-kiota-abstractions, Microsoft.Kiota.Abstractions, microsoft-kiota-http, kiota-typescript, github.com/microsoft/kiota-http-go. Published version ranges and source prerequisites are shown below; this is not an inspection of a visitor’s application.","review_status":"source_listed","control_topics":[],"public_actions":[{"summary":"Identify the exact component and deployed version, examine the linked publisher’s conditions, and retain evidence of any mitigation.","source_ids":["sr-4f96bf8ff6162d4aa1986bc232e8254a"],"action_type":"investigate","limitations":"Confirm current vendor support, compatibility and deployment evidence. This report has not tested a fix in your system.","current_supported_target":null}],"schema_version":"1.1.0","source_metrics":[{"kind":"CVSS","as_of":"2026-10-26T14:10:00.130Z","value":"7 HIGH (4.0)","meaning":"security-advisories@github.com severity; no combined Null risk score.","source_id":"sr-4f96bf8ff6162d4aa1986bc232e8254a"}],"why_it_matters":"Published affected context helps an owner decide what evidence to gather. This report has not examined your application.","related_sources":[{"id":"sr-3f88b9165efbe80a12902f076e1c5905","url":"https://github.com/advisories/GHSA-7j59-v9qr-6fq9","basis":"vendor_advisory","notes":"GitHub Advisory Database; CC-BY-4.0. Each advisory links its original attribution. Null normalizes fields.","title":"GHSA-7j59-v9qr-6fq9","publisher":"GitHub Advisory Database","observed_at":"2026-11-02T20:14:33.912Z"},{"id":"sr-4f96bf8ff6162d4aa1986bc232e8254a","url":"https://nvd.nist.gov/vuln/detail/CVE-2026-44503","basis":"official_catalog","notes":"This product uses data from the NVD API but is not endorsed or certified by the NVD.","title":"CVE-2026-44503","publisher":"NIST National Vulnerability Database","observed_at":"2026-11-08T01:45:47.446Z"}],"affected_context":[{"certainty":"source_listed","source_ids":["sr-3f88b9165efbe80a12902f076e1c5905"],"technology":"com.microsoft.kiota:microsoft-kiota-abstractions","known_exclusions":[],"conditions_summary":"### Summary\nThe 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. \n\nThis vulnerability is present in the RedirectHandlers for:\n\nhttps://github.com/microsoft/kiota-dotnet\nhttps://github.com/microsoft/kiota-java\nhttps://github.com/microsoft/kiota-python\nhttps://github.com/microsoft/kiota-typescript\nhttps://github.com/microsoft/kiota-http-go\n\n\n### Details\nOnly the Authorization header is removed; Cookie, Proxy-Authorization, and all custom headers are forwarded to the redirect target.\n\nThis is the default middleware in every kiota-java HTTP client created via KiotaClientFactory.create(). OkHttp's built-in redirect handler (which handles this correctly) is explicitly disabled at line 63 of KiotaClientFactory.java in favor of kiota's broken implementation.\n\nVulnerable code in RedirectHandler.java lines 107-116 (getRedirect method) in versions 1.90 and earlier:\n\n```\nboolean sameScheme = locationUrl.scheme().equalsIgnoreCase(requestUrl.scheme());\nboolean sameHost = locationUrl.host().toString().equalsIgnoreCas","public_affected_ranges":["< 1.9.1"]},{"certainty":"source_listed","source_ids":["sr-3f88b9165efbe80a12902f076e1c5905"],"technology":"Microsoft.Kiota.Abstractions","known_exclusions":[],"conditions_summary":"### Summary\nThe 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. \n\nThis vulnerability is present in the RedirectHandlers for:\n\nhttps://github.com/microsoft/kiota-dotnet\nhttps://github.com/microsoft/kiota-java\nhttps://github.com/microsoft/kiota-python\nhttps://github.com/microsoft/kiota-typescript\nhttps://github.com/microsoft/kiota-http-go\n\n\n### Details\nOnly the Authorization header is removed; Cookie, Proxy-Authorization, and all custom headers are forwarded to the redirect target.\n\nThis is the default middleware in every kiota-java HTTP client created via KiotaClientFactory.create(). OkHttp's built-in redirect handler (which handles this correctly) is explicitly disabled at line 63 of KiotaClientFactory.java in favor of kiota's broken implementation.\n\nVulnerable code in RedirectHandler.java lines 107-116 (getRedirect method) in versions 1.90 and earlier:\n\n```\nboolean sameScheme = locationUrl.scheme().equalsIgnoreCase(requestUrl.scheme());\nboolean sameHost = locationUrl.host().toString().equalsIgnoreCas","public_affected_ranges":["< 1.22.0"]},{"certainty":"source_listed","source_ids":["sr-3f88b9165efbe80a12902f076e1c5905"],"technology":"microsoft-kiota-http","known_exclusions":[],"conditions_summary":"### Summary\nThe 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. \n\nThis vulnerability is present in the RedirectHandlers for:\n\nhttps://github.com/microsoft/kiota-dotnet\nhttps://github.com/microsoft/kiota-java\nhttps://github.com/microsoft/kiota-python\nhttps://github.com/microsoft/kiota-typescript\nhttps://github.com/microsoft/kiota-http-go\n\n\n### Details\nOnly the Authorization header is removed; Cookie, Proxy-Authorization, and all custom headers are forwarded to the redirect target.\n\nThis is the default middleware in every kiota-java HTTP client created via KiotaClientFactory.create(). OkHttp's built-in redirect handler (which handles this correctly) is explicitly disabled at line 63 of KiotaClientFactory.java in favor of kiota's broken implementation.\n\nVulnerable code in RedirectHandler.java lines 107-116 (getRedirect method) in versions 1.90 and earlier:\n\n```\nboolean sameScheme = locationUrl.scheme().equalsIgnoreCase(requestUrl.scheme());\nboolean sameHost = locationUrl.host().toString().equalsIgnoreCas","public_affected_ranges":["< 1.9.9"]},{"certainty":"source_listed","source_ids":["sr-3f88b9165efbe80a12902f076e1c5905"],"technology":"kiota-typescript","known_exclusions":[],"conditions_summary":"### Summary\nThe 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. \n\nThis vulnerability is present in the RedirectHandlers for:\n\nhttps://github.com/microsoft/kiota-dotnet\nhttps://github.com/microsoft/kiota-java\nhttps://github.com/microsoft/kiota-python\nhttps://github.com/microsoft/kiota-typescript\nhttps://github.com/microsoft/kiota-http-go\n\n\n### Details\nOnly the Authorization header is removed; Cookie, Proxy-Authorization, and all custom headers are forwarded to the redirect target.\n\nThis is the default middleware in every kiota-java HTTP client created via KiotaClientFactory.create(). OkHttp's built-in redirect handler (which handles this correctly) is explicitly disabled at line 63 of KiotaClientFactory.java in favor of kiota's broken implementation.\n\nVulnerable code in RedirectHandler.java lines 107-116 (getRedirect method) in versions 1.90 and earlier:\n\n```\nboolean sameScheme = locationUrl.scheme().equalsIgnoreCase(requestUrl.scheme());\nboolean sameHost = locationUrl.host().toString().equalsIgnoreCas","public_affected_ranges":["< 1.0.0-preview.100"]},{"certainty":"source_listed","source_ids":["sr-3f88b9165efbe80a12902f076e1c5905"],"technology":"github.com/microsoft/kiota-http-go","known_exclusions":[],"conditions_summary":"### Summary\nThe 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. \n\nThis vulnerability is present in the RedirectHandlers for:\n\nhttps://github.com/microsoft/kiota-dotnet\nhttps://github.com/microsoft/kiota-java\nhttps://github.com/microsoft/kiota-python\nhttps://github.com/microsoft/kiota-typescript\nhttps://github.com/microsoft/kiota-http-go\n\n\n### Details\nOnly the Authorization header is removed; Cookie, Proxy-Authorization, and all custom headers are forwarded to the redirect target.\n\nThis is the default middleware in every kiota-java HTTP client created via KiotaClientFactory.create(). OkHttp's built-in redirect handler (which handles this correctly) is explicitly disabled at line 63 of KiotaClientFactory.java in favor of kiota's broken implementation.\n\nVulnerable code in RedirectHandler.java lines 107-116 (getRedirect method) in versions 1.90 and earlier:\n\n```\nboolean sameScheme = locationUrl.scheme().equalsIgnoreCase(requestUrl.scheme());\nboolean sameHost = locationUrl.host().toString().equalsIgnoreCas","public_affected_ranges":["< 1.5.5"]}],"null_published_at":"2026-11-08T19:53:44.056Z","source_updated_at":"2026-08-19T18:33:03.000Z","source_disclosed_at":"2026-05-07T01:49:01.000Z","is_synthetic_fixture":false,"null_last_reviewed_at":null,"public_change_summary":"Source facts changed; compare the preserved prior revision.","null_first_observed_at":"2026-11-02T20:14:33.912Z"},{"id":"NVI-00015204","kind":"vulnerability","title":"Kiota abstractions RedirectHandler leaks Cookie/Proxy-Authorization headers on cross-host redirect","revision":1,"unknowns":["Customer inventory, deployment, reachability and exploitation have not been inspected."],"lifecycle":"active","identifiers":["GHSA-7j59-v9qr-6fq9","CVE-2026-44503"],"plain_summary":"GitHub lists this reviewed advisory for com.microsoft.kiota:microsoft-kiota-abstractions, Microsoft.Kiota.Abstractions, microsoft-kiota-http, kiota-typescript, github.com/microsoft/kiota-http-go. Published version ranges and source prerequisites are shown below; this is not an inspection of a visitor’s application.","review_status":"source_listed","control_topics":[],"public_actions":[{"summary":"Identify the exact component and deployed version, examine the linked publisher’s conditions, and retain evidence of any mitigation.","source_ids":["sr-3f88b9165efbe80a12902f076e1c5905"],"action_type":"investigate","limitations":"Confirm current vendor support, compatibility and deployment evidence. This report has not tested a fix in your system.","current_supported_target":null}],"schema_version":"1.1.0","source_metrics":[],"why_it_matters":"Published affected context helps an owner decide what evidence to gather. This report has not examined your application.","related_sources":[{"id":"sr-3f88b9165efbe80a12902f076e1c5905","url":"https://github.com/advisories/GHSA-7j59-v9qr-6fq9","basis":"vendor_advisory","notes":"GitHub Advisory Database; CC-BY-4.0. Each advisory links its original attribution. Null normalizes fields.","title":"GHSA-7j59-v9qr-6fq9","publisher":"GitHub Advisory Database","observed_at":"2026-11-02T20:14:33.912Z"}],"affected_context":[{"certainty":"source_listed","source_ids":["sr-3f88b9165efbe80a12902f076e1c5905"],"technology":"com.microsoft.kiota:microsoft-kiota-abstractions","known_exclusions":[],"conditions_summary":"### Summary\nThe 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. \n\nThis vulnerability is present in the RedirectHandlers for:\n\nhttps://github.com/microsoft/kiota-dotnet\nhttps://github.com/microsoft/kiota-java\nhttps://github.com/microsoft/kiota-python\nhttps://github.com/microsoft/kiota-typescript\nhttps://github.com/microsoft/kiota-http-go\n\n\n### Details\nOnly the Authorization header is removed; Cookie, Proxy-Authorization, and all custom headers are forwarded to the redirect target.\n\nThis is the default middleware in every kiota-java HTTP client created via KiotaClientFactory.create(). OkHttp's built-in redirect handler (which handles this correctly) is explicitly disabled at line 63 of KiotaClientFactory.java in favor of kiota's broken implementation.\n\nVulnerable code in RedirectHandler.java lines 107-116 (getRedirect method) in versions 1.90 and earlier:\n\n```\nboolean sameScheme = locationUrl.scheme().equalsIgnoreCase(requestUrl.scheme());\nboolean sameHost = locationUrl.host().toString().equalsIgnoreCas","public_affected_ranges":["< 1.9.1"]},{"certainty":"source_listed","source_ids":["sr-3f88b9165efbe80a12902f076e1c5905"],"technology":"Microsoft.Kiota.Abstractions","known_exclusions":[],"conditions_summary":"### Summary\nThe 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. \n\nThis vulnerability is present in the RedirectHandlers for:\n\nhttps://github.com/microsoft/kiota-dotnet\nhttps://github.com/microsoft/kiota-java\nhttps://github.com/microsoft/kiota-python\nhttps://github.com/microsoft/kiota-typescript\nhttps://github.com/microsoft/kiota-http-go\n\n\n### Details\nOnly the Authorization header is removed; Cookie, Proxy-Authorization, and all custom headers are forwarded to the redirect target.\n\nThis is the default middleware in every kiota-java HTTP client created via KiotaClientFactory.create(). OkHttp's built-in redirect handler (which handles this correctly) is explicitly disabled at line 63 of KiotaClientFactory.java in favor of kiota's broken implementation.\n\nVulnerable code in RedirectHandler.java lines 107-116 (getRedirect method) in versions 1.90 and earlier:\n\n```\nboolean sameScheme = locationUrl.scheme().equalsIgnoreCase(requestUrl.scheme());\nboolean sameHost = locationUrl.host().toString().equalsIgnoreCas","public_affected_ranges":["< 1.22.0"]},{"certainty":"source_listed","source_ids":["sr-3f88b9165efbe80a12902f076e1c5905"],"technology":"microsoft-kiota-http","known_exclusions":[],"conditions_summary":"### Summary\nThe 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. \n\nThis vulnerability is present in the RedirectHandlers for:\n\nhttps://github.com/microsoft/kiota-dotnet\nhttps://github.com/microsoft/kiota-java\nhttps://github.com/microsoft/kiota-python\nhttps://github.com/microsoft/kiota-typescript\nhttps://github.com/microsoft/kiota-http-go\n\n\n### Details\nOnly the Authorization header is removed; Cookie, Proxy-Authorization, and all custom headers are forwarded to the redirect target.\n\nThis is the default middleware in every kiota-java HTTP client created via KiotaClientFactory.create(). OkHttp's built-in redirect handler (which handles this correctly) is explicitly disabled at line 63 of KiotaClientFactory.java in favor of kiota's broken implementation.\n\nVulnerable code in RedirectHandler.java lines 107-116 (getRedirect method) in versions 1.90 and earlier:\n\n```\nboolean sameScheme = locationUrl.scheme().equalsIgnoreCase(requestUrl.scheme());\nboolean sameHost = locationUrl.host().toString().equalsIgnoreCas","public_affected_ranges":["< 1.9.9"]},{"certainty":"source_listed","source_ids":["sr-3f88b9165efbe80a12902f076e1c5905"],"technology":"kiota-typescript","known_exclusions":[],"conditions_summary":"### Summary\nThe 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. \n\nThis vulnerability is present in the RedirectHandlers for:\n\nhttps://github.com/microsoft/kiota-dotnet\nhttps://github.com/microsoft/kiota-java\nhttps://github.com/microsoft/kiota-python\nhttps://github.com/microsoft/kiota-typescript\nhttps://github.com/microsoft/kiota-http-go\n\n\n### Details\nOnly the Authorization header is removed; Cookie, Proxy-Authorization, and all custom headers are forwarded to the redirect target.\n\nThis is the default middleware in every kiota-java HTTP client created via KiotaClientFactory.create(). OkHttp's built-in redirect handler (which handles this correctly) is explicitly disabled at line 63 of KiotaClientFactory.java in favor of kiota's broken implementation.\n\nVulnerable code in RedirectHandler.java lines 107-116 (getRedirect method) in versions 1.90 and earlier:\n\n```\nboolean sameScheme = locationUrl.scheme().equalsIgnoreCase(requestUrl.scheme());\nboolean sameHost = locationUrl.host().toString().equalsIgnoreCas","public_affected_ranges":["< 1.0.0-preview.100"]},{"certainty":"source_listed","source_ids":["sr-3f88b9165efbe80a12902f076e1c5905"],"technology":"github.com/microsoft/kiota-http-go","known_exclusions":[],"conditions_summary":"### Summary\nThe 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. \n\nThis vulnerability is present in the RedirectHandlers for:\n\nhttps://github.com/microsoft/kiota-dotnet\nhttps://github.com/microsoft/kiota-java\nhttps://github.com/microsoft/kiota-python\nhttps://github.com/microsoft/kiota-typescript\nhttps://github.com/microsoft/kiota-http-go\n\n\n### Details\nOnly the Authorization header is removed; Cookie, Proxy-Authorization, and all custom headers are forwarded to the redirect target.\n\nThis is the default middleware in every kiota-java HTTP client created via KiotaClientFactory.create(). OkHttp's built-in redirect handler (which handles this correctly) is explicitly disabled at line 63 of KiotaClientFactory.java in favor of kiota's broken implementation.\n\nVulnerable code in RedirectHandler.java lines 107-116 (getRedirect method) in versions 1.90 and earlier:\n\n```\nboolean sameScheme = locationUrl.scheme().equalsIgnoreCase(requestUrl.scheme());\nboolean sameHost = locationUrl.host().toString().equalsIgnoreCas","public_affected_ranges":["< 1.5.5"]}],"null_published_at":"2026-11-03T10:03:26.560Z","source_updated_at":"2026-08-19T18:33:03.000Z","source_disclosed_at":"2026-05-07T01:49:01.000Z","is_synthetic_fixture":false,"null_last_reviewed_at":null,"public_change_summary":"First indexed by Null; source disclosure date is shown separately.","null_first_observed_at":"2026-11-02T20:14:33.912Z"}],"next_cursor":null,"snapshot_revision":"42594"}