{"id":"CVE-2026-45300","aliases":["CLSA-2026-1791926769","CLSA-2026-1793887823","DEBIAN-CVE-2026-45300","EUVD-2026-34910","GHSA-fmxf-pm6p-7xgm","RHLW-2026-817b6809af7b9c1b","ROOT-APP-MAVEN-CVE-2026-45300","UBUNTU-CVE-2026-45300"],"status":"published","title":"async-http-client: Cookie header not stripped on cross-origin redirect","description":"The AsyncHttpClient (AHC) library allows Java applications to easily execute HTTP requests and asynchronously process HTTP responses. Versions on the 2.x branch prior to 2.15.0 and the 3.x branch prior to 3.0.10 leak `Cookie` headers to cross-origin redirect targets. When following a redirect to a different origin, the `propagatedHeaders()` method in `Redirect30xInterceptor.java` strips `Authorization` and `Proxy-Authorization` headers but does not strip the `Cookie` header, causing session cookies and other sensitive cookie values to be sent to attacker-controlled servers. Versions 2.15.0 and 3.0.10 patch the issue.","severity":{"version":"3.1","score":7.4,"vector":"CVSS:3.1/AV:N/AC:L/PR:N/UI:R/S:C/C:H/I:N/A:N","level":"high","assessor":"cna","from":"cve"},"epss":{"day":"2026-11-11","score":0.00399,"percentile":0.34577,"model":"v2026.06.15"},"facts":{"in_kev":false,"known_exploited":false,"public_exploit":false,"fix_available":true},"cwes":["CWE-200"],"published":"2026-05-18T16:42:20Z","modified":"2026-11-06T13:15:13Z","fixes":[{"ecosystem":"Maven","package":"org.asynchttpclient:async-http-client","fixed_in":["3.0.10","2.15.0"],"sources":["ghsa","osv"]},{"ecosystem":"Root:Maven","package":"org.asynchttpclient:async-http-client","fixed_in":["2.15.0-aikido.1"],"sources":["osv"]},{"ecosystem":"Root:Maven","package":"io.root.org.asynchttpclient:async-http-client","fixed_in":["2.15.0-root.io.1"],"sources":["osv"]}],"affected":[{"source":"ghsa","ecosystem":"Maven","package":"org.asynchttpclient:async-http-client","ranges":[{"type":"ECOSYSTEM","events":[{"introduced":"3.0.0.Beta1"},{"fixed":"3.0.10"}]}]},{"source":"ghsa","ecosystem":"Maven","package":"org.asynchttpclient:async-http-client","ranges":[{"type":"ECOSYSTEM","events":[{"introduced":"2.0.0"},{"fixed":"2.15.0"}]}]},{"source":"osv","ecosystem":"TuxCare:Maven","package":"org.asynchttpclient:async-http-client","ranges":[{"type":"ECOSYSTEM","events":[{"introduced":"2.12.1"},{"fixed":"2.12.1-tuxcare.1"}]}],"versions":["2.12.1"],"bundled":12},{"source":"osv","ecosystem":"TuxCare:Maven","package":"org.asynchttpclient:async-http-client-bom","ranges":[{"type":"ECOSYSTEM","events":[{"introduced":"2.12.1"},{"fixed":"2.12.1-tuxcare.1"}]}],"versions":["2.12.1"],"bundled":12},{"source":"osv","ecosystem":"TuxCare:Maven","package":"org.asynchttpclient:async-http-client-example","ranges":[{"type":"ECOSYSTEM","events":[{"introduced":"2.12.1"},{"fixed":"2.12.1-tuxcare.1"}]}],"versions":["2.12.1"],"bundled":12},{"source":"osv","ecosystem":"TuxCare:Maven","package":"org.asynchttpclient:async-http-client-extras-guava","ranges":[{"type":"ECOSYSTEM","events":[{"introduced":"2.12.1"},{"fixed":"2.12.1-tuxcare.1"}]}],"versions":["2.12.1"],"bundled":12},{"source":"osv","ecosystem":"TuxCare:Maven","package":"org.asynchttpclient:async-http-client-extras-jdeferred","ranges":[{"type":"ECOSYSTEM","events":[{"introduced":"2.12.1"},{"fixed":"2.12.1-tuxcare.1"}]}],"versions":["2.12.1"],"bundled":12},{"source":"osv","ecosystem":"TuxCare:Maven","package":"org.asynchttpclient:async-http-client-extras-parent","ranges":[{"type":"ECOSYSTEM","events":[{"introduced":"2.12.1"},{"fixed":"2.12.1-tuxcare.1"}]}],"versions":["2.12.1"],"bundled":12},{"source":"osv","ecosystem":"TuxCare:Maven","package":"org.asynchttpclient:async-http-client-extras-registry","ranges":[{"type":"ECOSYSTEM","events":[{"introduced":"2.12.1"},{"fixed":"2.12.1-tuxcare.1"}]}],"versions":["2.12.1"],"bundled":12},{"source":"osv","ecosystem":"TuxCare:Maven","package":"org.asynchttpclient:async-http-client-extras-retrofit2","ranges":[{"type":"ECOSYSTEM","events":[{"introduced":"2.12.1"},{"fixed":"2.12.1-tuxcare.1"}]}],"versions":["2.12.1"],"bundled":12},{"source":"osv","ecosystem":"TuxCare:Maven","package":"org.asynchttpclient:async-http-client-extras-rxjava","ranges":[{"type":"ECOSYSTEM","events":[{"introduced":"2.12.1"},{"fixed":"2.12.1-tuxcare.1"}]}],"versions":["2.12.1"],"bundled":12},{"source":"osv","ecosystem":"TuxCare:Maven","package":"org.asynchttpclient:async-http-client-extras-rxjava2","ranges":[{"type":"ECOSYSTEM","events":[{"introduced":"2.12.1"},{"fixed":"2.12.1-tuxcare.1"}]}],"versions":["2.12.1"],"bundled":12},{"source":"osv","ecosystem":"TuxCare:Maven","package":"org.asynchttpclient:async-http-client-extras-simple","ranges":[{"type":"ECOSYSTEM","events":[{"introduced":"2.12.1"},{"fixed":"2.12.1-tuxcare.1"}]}],"versions":["2.12.1"],"bundled":12},{"source":"osv","ecosystem":"TuxCare:Maven","package":"org.asynchttpclient:async-http-client-extras-typesafe-config","ranges":[{"type":"ECOSYSTEM","events":[{"introduced":"2.12.1"},{"fixed":"2.12.1-tuxcare.1"}]}],"versions":["2.12.1"],"bundled":12},{"source":"osv","ecosystem":"TuxCare:Maven","package":"org.asynchttpclient:async-http-client-netty-utils","ranges":[{"type":"ECOSYSTEM","events":[{"introduced":"2.12.1"},{"fixed":"2.12.1-tuxcare.1"}]}],"versions":["2.12.1"],"bundled":12},{"source":"osv","ecosystem":"TuxCare:Maven","package":"org.asynchttpclient:async-http-client-project","ranges":[{"type":"ECOSYSTEM","events":[{"introduced":"2.12.1"},{"fixed":"2.12.1-tuxcare.1"}]}],"versions":["2.12.1"],"bundled":12},{"source":"osv","ecosystem":"TuxCare:Maven","package":"org.asynchttpclient:async-http-client","ranges":[{"type":"ECOSYSTEM","events":[{"introduced":"2.12.3"},{"fixed":"2.12.3-tuxcare.2"}]}],"versions":["2.12.3","2.12.3-tuxcare.1"],"bundled":15},{"source":"osv","ecosystem":"TuxCare:Maven","package":"org.asynchttpclient:async-http-client-bom","ranges":[{"type":"ECOSYSTEM","events":[{"introduced":"2.12.3"},{"fixed":"2.12.3-tuxcare.2"}]}],"versions":["2.12.3","2.12.3-tuxcare.1"],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Advisory","advisory","web","report"]},{"url":"https://github.com/AsyncHttpClient/async-http-client/commit/3b0e3e9e","tags":["x_refsource_MISC","Patch","fix","web","report"]},{"url":"https://github.com/AsyncHttpClient/async-http-client/releases/tag/async-http-client-project-3.0.10","tags":["x_refsource_MISC","Product","Release Notes","web","report"]},{"url":"https://nvd.nist.gov/vuln/detail/CVE-2026-45300","tags":["advisory"]},{"url":"https://github.com/advisories/GHSA-fmxf-pm6p-7xgm","tags":["advisory"]},{"url":"https://github.com/CVEProject/cvelistV5/tree/main/cves/2026/45xxx/CVE-2026-45300.json","tags":["advisory"]},{"url":"https://security-tracker.debian.org/tracker/CVE-2026-45300","tags":["advisory"]},{"url":"https://github.com/AsyncHttpClient/async-http-client","tags":["package"]},{"url":"https://github.com/AsyncHttpClient/async-http-client/security/advisories/GHSA-m452-q8c9-rg2f","tags":["advisory"]},{"url":"https://github.com/CVEProject/cvelistV5/tree/main/cves/2026/55xxx/CVE-2026-55688.json","tags":["advisory"]},{"url":"https://nvd.nist.gov/vuln/detail/CVE-2026-55688","tags":["advisory"]},{"url":"https://github.com/AsyncHttpClient/async-http-client/pull/2196","tags":["fix"]},{"url":"https://github.com/advisories/GHSA-m452-q8c9-rg2f","tags":["advisory"]},{"url":"https://ubuntu.com/security/CVE-2026-45300","tags":["report"]},{"url":"https://www.cve.org/CVERecord?id=CVE-2026-45300","tags":["report"]}],"sources":{"cve":[{"id":"CVE-2026-45300","title":"async-http-client: Cookie header not stripped on cross-origin redirect","description":"The AsyncHttpClient (AHC) library allows Java applications to easily execute HTTP requests and asynchronously process HTTP responses. Versions on the 2.x branch prior to 2.15.0 and the 3.x branch prior to 3.0.10 leak `Cookie` headers to cross-origin redirect targets. When following a redirect to a different origin, the `propagatedHeaders()` method in `Redirect30xInterceptor.java` strips `Authorization` and `Proxy-Authorization` headers but does not strip the `Cookie` header, causing session cookies and other sensitive cookie values to be sent to attacker-controlled servers. Versions 2.15.0 and 3.0.10 patch the issue.","status":"published","published":"2026-06-05T19:32:43.547Z","modified":"2026-06-08T16:34:10.203Z","cvss":[{"version":"3.1","score":7.4,"vector":"CVSS:3.1/AV:N/AC:L/PR:N/UI:R/S:C/C:H/I:N/A:N","level":"high","assessor":"cna"}],"cwes":["CWE-200"],"updated_at":"2026-11-02T13:46:43.922571Z"}],"euvd":[{"id":"EUVD-2026-34910","description":"The AsyncHttpClient (AHC) library allows Java applications to easily execute HTTP requests and asynchronously process HTTP responses. Versions on the 2.x branch prior to 2.15.0 and the 3.x branch prior to 3.0.10 leak `Cookie` headers to cross-origin redirect targets. When following a redirect to a different origin, the `propagatedHeaders()` method in `Redirect30xInterceptor.java` strips `Authorization` and `Proxy-Authorization` headers but does not strip the `Cookie` header, causing session cookies and other sensitive cookie values to be sent to attacker-controlled servers. Versions 2.15.0 and 3.0.10 patch the issue.","status":"published","published":"2026-06-05T19:32:43Z","modified":"2026-06-08T16:34:10Z","cvss":[{"version":"3.1","score":7.4,"vector":"CVSS:3.1/AV:N/AC:L/PR:N/UI:R/S:C/C:H/I:N/A:N","level":"high"}],"updated_at":"2026-11-02T18:20:48.834104Z"}],"ghsa":[{"id":"GHSA-fmxf-pm6p-7xgm","title":"async-http-client: Cookie header not stripped on cross-origin redirect","description":"## Summary\n\nasync-http-client leaks `Cookie` headers to cross-origin redirect targets. When following a redirect across a security boundary (different origin, or HTTPS→HTTP downgrade), the `propagatedHeaders()` method in `Redirect30xInterceptor.java` strips `Authorization` and `Proxy-Authorization` headers but does not strip `Cookie`, so session cookies and other sensitive cookie values are forwarded to the redirect target — which may be attacker-controlled.\n\n## Details\n\nThe vulnerability is in `client/src/main/java/org/asynchttpclient/netty/handler/intercept/Redirect30xInterceptor.java`.\n\nThe caller computes `stripAuth` on each redirect:\n\n```java\nboolean sameBase    = request.getUri().isSameBase(newUri);\nboolean stripAuth   = !sameBase || schemeDowngrade || stripAuthorizationOnRedirect;\n// ...\nrequestBuilder.setHeaders(propagatedHeaders(request, realm, keepBody, stripAuth));\n```\n\n`stripAuth` is `true` whenever the redirect crosses an origin, downgrades the scheme, or the caller opted in via `AsyncHttpClientConfig#isStripAuthorizationOnRedirect()`.\n\nIn the vulnerable version, `propagatedHeaders()` only removes `Authorization` and `Proxy-Authorization` in that branch — `Cookie` is left untouched:\n\n```java\nprivate static HttpHeaders propagatedHeaders(Request request, Realm realm, boolean keepBody, boolean stripAuthorization) {\n    HttpHeaders headers = request.getHeaders()\n            .remove(HOST)\n            .remove(CONTENT_LENGTH);\n\n    if (!keepBody) {\n        headers.remove(CONTENT_TYPE);\n    }\n\n    if (stripAuthorization || (realm != null \u0026\u0026 (realm.getScheme() == AuthScheme.NTLM\n            || realm.getScheme() == AuthScheme.SCRAM_SHA_256))) {\n        headers.remove(AUTHORIZATION)\n                .remove(PROXY_AUTHORIZATION);\n        // BUG: COOKIE is not removed here, so cookies leak across the security boundary.\n    }\n    return headers;\n}\n```\n\nThe companion test class `RedirectCredentialSecurityTest` covers `Authorization` / `Proxy-Authorization` stripping on cross-origin redirects and scheme downgrades, but has no coverage for `Cookie`, which is why the regression went unnoticed.\n\n## Proof of concept\n\n```java\nimport org.asynchttpclient.*;\n\nAsyncHttpClient client = asyncHttpClient();\n\n// trusted-api.com responds 302 -\u003e https://evil.com\nRequest request = new RequestBuilder(\"GET\")\n        .setUrl(\"https://trusted-api.com/endpoint\")\n        .setHeader(\"Cookie\", \"session=abc123; csrf=xyz789; api_key=secret\")\n        .setHeader(\"Authorization\", \"Bearer token123\")\n        .build();\n\nclient.executeRequest(request).get();\n\n// Request seen by evil.com after the redirect:\n//   Authorization: \u003cstripped\u003e\n//   Cookie:        session=abc123; csrf=xyz789; api_key=secret   \u003c-- leaked\n```\n\n## Impact\n\n- **Session hijacking** — leaked session cookies allow impersonation.\n- **CSRF token theft** — CSRF tokens carried in cookies are disclosed.\n- **API key theft** — API keys stored in cookies are disclosed.\n- **Privacy** — tracking identifiers leak to third-party origins.\n\nRealistic attack paths:\n\n- Open-redirect in a trusted API endpoint.\n- Compromised CDN or API gateway injecting redirects.\n- MITM on a plaintext hop in the redirect chain.\n\n## Fix\n\nAdd `COOKIE` to the headers removed alongside `AUTHORIZATION` / `PROXY_AUTHORIZATION` on the security-boundary branch:\n\n```java\nif (stripAuthorization) {\n    headers.remove(AUTHORIZATION)\n            .remove(PROXY_AUTHORIZATION)\n            .remove(COOKIE);\n} else if (realm != null \u0026\u0026 (realm.getScheme() == AuthScheme.NTLM\n        || realm.getScheme() == AuthScheme.SCRAM_SHA_256)) {\n    headers.remove(AUTHORIZATION)\n            .remove(PROXY_AUTHORIZATION);\n}\n```\n\nNote that the URI-scoped `CookieStore` will re-add any cookies that legitimately match the new target after `propagatedHeaders` returns, so legitimate cross-origin sessions tracked by the client are not broken.\n\nFixed in **3.0.10** and **2.15.0** by commit [`3b0e3e9e`](https://github.com/AsyncHttpClient/async-http-client/commit/3b0e3e9e).","status":"published","published":"2026-05-18T16:42:20Z","modified":"2026-06-09T11:56:43Z","cvss":[{"version":"3.1","score":7.4,"vector":"CVSS:3.1/AV:N/AC:L/PR:N/UI:R/S:C/C:H/I:N/A:N","level":"high"}],"cwes":["CWE-200"],"updated_at":"2026-11-02T14:40:23.739691Z"}],"nvd":[{"id":"CVE-2026-45300","description":"The AsyncHttpClient (AHC) library allows Java applications to easily execute HTTP requests and asynchronously process HTTP responses. Versions on the 2.x branch prior to 2.15.0 and the 3.x branch prior to 3.0.10 leak `Cookie` headers to cross-origin redirect targets. When following a redirect to a different origin, the `propagatedHeaders()` method in `Redirect30xInterceptor.java` strips `Authorization` and `Proxy-Authorization` headers but does not strip the `Cookie` header, causing session cookies and other sensitive cookie values to be sent to attacker-controlled servers. Versions 2.15.0 and 3.0.10 patch the issue.","status":"published","published":"2026-06-05T20:17:31.893Z","modified":"2026-07-23T07:10:00.113Z","cvss":[{"version":"3.1","score":7.4,"vector":"CVSS:3.1/AV:N/AC:L/PR:N/UI:R/S:C/C:H/I:N/A:N","level":"high","assessor":"secondary"}],"cwes":["CWE-200"],"updated_at":"2026-11-02T14:12:22.73178Z"}],"osv":[{"id":"CVE-2026-45300","title":"async-http-client: Cookie header not stripped on cross-origin redirect","description":"The AsyncHttpClient (AHC) library allows Java applications to easily execute HTTP requests and asynchronously process HTTP responses. Versions on the 2.x branch prior to 2.15.0 and the 3.x branch prior to 3.0.10 leak `Cookie` headers to cross-origin redirect targets. When following a redirect to a different origin, the `propagatedHeaders()` method in `Redirect30xInterceptor.java` strips `Authorization` and `Proxy-Authorization` headers but does not strip the `Cookie` header, causing session cookies and other sensitive cookie values to be sent to attacker-controlled servers. Versions 2.15.0 and 3.0.10 patch the issue.","status":"published","published":"2026-06-05T19:32:43.547Z","modified":"2026-10-28T02:30:43.741611351Z","cvss":[{"version":"3.1","score":7.4,"vector":"CVSS:3.1/AV:N/AC:L/PR:N/UI:R/S:C/C:H/I:N/A:N","level":"high"}],"cwes":["CWE-200"],"updated_at":"2026-11-02T15:45:05.172514Z"},{"id":"DEBIAN-CVE-2026-45300","description":"The AsyncHttpClient (AHC) library allows Java applications to easily execute HTTP requests and asynchronously process HTTP responses. Versions on the 2.x branch prior to 2.15.0 and the 3.x branch prior to 3.0.10 leak `Cookie` headers to cross-origin redirect targets. When following a redirect to a different origin, the `propagatedHeaders()` method in `Redirect30xInterceptor.java` strips `Authorization` and `Proxy-Authorization` headers but does not strip the `Cookie` header, causing session cookies and other sensitive cookie values to be sent to attacker-controlled servers. Versions 2.15.0 and 3.0.10 patch the issue.","status":"withdrawn","published":"2026-06-05T20:17:31.893Z","modified":"2026-06-30T02:01:37.92281294Z","cvss":[{"version":"3.1","score":7.4,"vector":"CVSS:3.1/AV:N/AC:L/PR:N/UI:R/S:C/C:H/I:N/A:N","level":"high"}],"updated_at":"2026-11-02T15:45:55.669088Z"},{"id":"GHSA-fmxf-pm6p-7xgm","title":"async-http-client: Cookie header not stripped on cross-origin redirect","description":"## Summary\n\nasync-http-client leaks `Cookie` headers to cross-origin redirect targets. When following a redirect across a security boundary (different origin, or HTTPS→HTTP downgrade), the `propagatedHeaders()` method in `Redirect30xInterceptor.java` strips `Authorization` and `Proxy-Authorization` headers but does not strip `Cookie`, so session cookies and other sensitive cookie values are forwarded to the redirect target — which may be attacker-controlled.\n\n## Details\n\nThe vulnerability is in `client/src/main/java/org/asynchttpclient/netty/handler/intercept/Redirect30xInterceptor.java`.\n\nThe caller computes `stripAuth` on each redirect:\n\n```java\nboolean sameBase    = request.getUri().isSameBase(newUri);\nboolean stripAuth   = !sameBase || schemeDowngrade || stripAuthorizationOnRedirect;\n// ...\nrequestBuilder.setHeaders(propagatedHeaders(request, realm, keepBody, stripAuth));\n```\n\n`stripAuth` is `true` whenever the redirect crosses an origin, downgrades the scheme, or the caller opted in via `AsyncHttpClientConfig#isStripAuthorizationOnRedirect()`.\n\nIn the vulnerable version, `propagatedHeaders()` only removes `Authorization` and `Proxy-Authorization` in that branch — `Cookie` is left untouched:\n\n```java\nprivate static HttpHeaders propagatedHeaders(Request request, Realm realm, boolean keepBody, boolean stripAuthorization) {\n    HttpHeaders headers = request.getHeaders()\n            .remove(HOST)\n            .remove(CONTENT_LENGTH);\n\n    if (!keepBody) {\n        headers.remove(CONTENT_TYPE);\n    }\n\n    if (stripAuthorization || (realm != null \u0026\u0026 (realm.getScheme() == AuthScheme.NTLM\n            || realm.getScheme() == AuthScheme.SCRAM_SHA_256))) {\n        headers.remove(AUTHORIZATION)\n                .remove(PROXY_AUTHORIZATION);\n        // BUG: COOKIE is not removed here, so cookies leak across the security boundary.\n    }\n    return headers;\n}\n```\n\nThe companion test class `RedirectCredentialSecurityTest` covers `Authorization` / `Proxy-Authorization` stripping on cross-origin redirects and scheme downgrades, but has no coverage for `Cookie`, which is why the regression went unnoticed.\n\n## Proof of concept\n\n```java\nimport org.asynchttpclient.*;\n\nAsyncHttpClient client = asyncHttpClient();\n\n// trusted-api.com responds 302 -\u003e https://evil.com\nRequest request = new RequestBuilder(\"GET\")\n        .setUrl(\"https://trusted-api.com/endpoint\")\n        .setHeader(\"Cookie\", \"session=abc123; csrf=xyz789; api_key=secret\")\n        .setHeader(\"Authorization\", \"Bearer token123\")\n        .build();\n\nclient.executeRequest(request).get();\n\n// Request seen by evil.com after the redirect:\n//   Authorization: \u003cstripped\u003e\n//   Cookie:        session=abc123; csrf=xyz789; api_key=secret   \u003c-- leaked\n```\n\n## Impact\n\n- **Session hijacking** — leaked session cookies allow impersonation.\n- **CSRF token theft** — CSRF tokens carried in cookies are disclosed.\n- **API key theft** — API keys stored in cookies are disclosed.\n- **Privacy** — tracking identifiers leak to third-party origins.\n\nRealistic attack paths:\n\n- Open-redirect in a trusted API endpoint.\n- Compromised CDN or API gateway injecting redirects.\n- MITM on a plaintext hop in the redirect chain.\n\n## Fix\n\nAdd `COOKIE` to the headers removed alongside `AUTHORIZATION` / `PROXY_AUTHORIZATION` on the security-boundary branch:\n\n```java\nif (stripAuthorization) {\n    headers.remove(AUTHORIZATION)\n            .remove(PROXY_AUTHORIZATION)\n            .remove(COOKIE);\n} else if (realm != null \u0026\u0026 (realm.getScheme() == AuthScheme.NTLM\n        || realm.getScheme() == AuthScheme.SCRAM_SHA_256)) {\n    headers.remove(AUTHORIZATION)\n            .remove(PROXY_AUTHORIZATION);\n}\n```\n\nNote that the URI-scoped `CookieStore` will re-add any cookies that legitimately match the new target after `propagatedHeaders` returns, so legitimate cross-origin sessions tracked by the client are not broken.\n\nFixed in **3.0.10** and **2.15.0** by commit [`3b0e3e9e`](https://github.com/AsyncHttpClient/async-http-client/commit/3b0e3e9e).","status":"published","published":"2026-05-18T16:42:20Z","modified":"2026-09-10T03:50:46.791067428Z","cvss":[{"version":"3.1","score":7.4,"vector":"CVSS:3.1/AV:N/AC:L/PR:N/UI:R/S:C/C:H/I:N/A:N","level":"high"}],"cwes":["CWE-200"],"updated_at":"2026-11-02T15:46:46.760785Z"},{"id":"RHLW-2026-817b6809af7b9c1b","title":"Lightwell Security Advisory: async-http-client 3.0.5.rhlw-00002","description":"Red Hat Lightwell has released org.asynchttpclient:async-http-client 3.0.5.rhlw-00002 with backported fixes for CVE-2026-45300 and CVE-2026-55688.\n\nCVE-2026-45300: async-http-client: Cookie header not stripped on cross-origin redirect\n\nCVE-2026-55688: AsyncHttpClient: Cookie stored for an unrelated domain (cookie tossing) via ThreadSafeCookieStore\n\nThis patched artifact is a drop-in replacement for org.asynchttpclient:async-http-client 3.0.5 from Maven Central.","status":"published","published":"2026-09-29T15:37:07Z","modified":"2026-10-27T04:00:12.24249274Z","cvss":[{"version":"3.1","score":7.4,"vector":"CVSS:3.1/AV:N/AC:L/PR:N/UI:R/S:C/C:H/I:N/A:N","level":"high"}],"updated_at":"2026-11-02T15:52:58.636919Z"},{"id":"ROOT-APP-MAVEN-CVE-2026-45300","title":"CVE-2026-45300 in org.asynchttpclient:async-http-client - Patched by Root","description":"Root has patched CVE-2026-45300 in the org.asynchttpclient:async-http-client package for Root:Maven. Multiple fixed versions available.","status":"published","published":"2026-10-26T10:58:29Z","modified":"2026-10-26T11:15:14.297874115Z","cvss":[{"version":"3.1","score":7.4,"vector":"CVSS:3.1/AV:N/AC:L/PR:N/UI:R/S:C/C:H/I:N/A:N","level":"high"}],"updated_at":"2026-11-02T15:53:27.066589Z"},{"id":"UBUNTU-CVE-2026-45300","description":"The AsyncHttpClient (AHC) library allows Java applications to easily execute HTTP requests and asynchronously process HTTP responses. Versions on the 2.x branch prior to 2.15.0 and the 3.x branch prior to 3.0.10 leak `Cookie` headers to cross-origin redirect targets. When following a redirect to a different origin, the `propagatedHeaders()` method in `Redirect30xInterceptor.java` strips `Authorization` and `Proxy-Authorization` headers but does not strip the `Cookie` header, causing session cookies and other sensitive cookie values to be sent to attacker-controlled servers. Versions 2.15.0 and 3.0.10 patch the issue.","status":"published","published":"2026-06-05T20:17:00Z","modified":"2026-10-17T12:58:22.48107068Z","cvss":[{"version":"3.1","score":7.4,"vector":"CVSS:3.1/AV:N/AC:L/PR:N/UI:R/S:C/C:H/I:N/A:N","level":"high"}],"updated_at":"2026-11-02T16:56:26.396868Z"},{"id":"CLSA-2026-1791926769","title":"TuxCare security update for org.asynchttpclient (13 CVEs)","description":"TuxCare rebuilt 14 org.asynchttpclient packages to address 13 CVEs. Fixed in 2.12.1-tuxcare.1.","status":"published","published":"2026-10-13T21:26:09Z","modified":"2026-10-15T09:47:45.855594885Z","updated_at":"2026-11-02T15:43:50.599064Z"},{"id":"CLSA-2026-1793887823","title":"TuxCare security update for org.asynchttpclient (16 CVEs)","description":"TuxCare rebuilt 14 org.asynchttpclient packages to address 16 CVEs. Fixed in 2.12.3-tuxcare.2.","status":"published","published":"2026-11-05T15:10:25Z","modified":"2026-11-06T13:15:13.773820413Z","updated_at":"2026-11-06T13:44:09.891978Z"}]}}