{"id":"CVE-2026-118659","revision":null,"records":[{"revision":"792efbe56b4449a4b38baf8f200a6853","observedAt":"2026-10-29T19:28:49.708+00:00","statement":{"source":"cve-program","id":"CVE-2026-118659","aliases":[],"title":"@happy-dom/server-renderer: ServerRendererServer Target-Origin Bypass SSRF / Open Proxy","description":"Happy DOM is a JavaScript implementation of a web browser without its graphical user interface. Prior to 21.0.2, the Happy DOM server-renderer package's ServerRendererServer accepts unauthenticated HTTP/2 requests and resolves attacker-controlled :path values against server.targetOrigin in #onIncomingRequest in packages/@happy-dom/server-renderer/src/ServerRendererServer.ts without confirming that the resolved origin remains trusted before calling fetch. A protocol-relative path can change the destination to an arbitrary HTTP or HTTPS endpoint reachable by the server, including local and internal services, and the proxy relays the fetched response headers and body to the requester. This issue is fixed in version 21.0.2.","state":0,"publishedAt":"2026-10-28T20:20:29.561+00:00","modifiedAt":"2026-10-29T18:27:45.701+00:00","affected":[{"ecosystem":"Vendor product","name":"happy-dom","ranges":[],"versions":[],"rawVersionEvidence":"{\n                    \"vendor\": \"capricorn86\",\n                    \"product\": \"happy-dom\",\n                    \"versions\": [\n                        {\n                            \"version\": \"< 21.0.2\",\n                            \"status\": \"affected\"\n                        }\n                    ]\n                }"}],"metrics":[{"system":"CVSS 3.1","vector":"CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:N/A:N","score":7.5,"severity":"HIGH"}],"references":["https://github.com/capricorn86/happy-dom/security/advisories/GHSA-pmf4-3xr3-xjhg","https://github.com/capricorn86/happy-dom/pull/2520","https://github.com/capricorn86/happy-dom/commit/1f3ffdf634231361de1a2acb629b4fe8ee1bd85d","https://github.com/capricorn86/happy-dom/releases/tag/v21.0.2"],"sourceUrl":"https://www.cve.org/CVERecord?id=CVE-2026-118659","license":"CVE Program Terms of Use","key":"cve-program:CVE-2026-118659","identifiers":["CVE-2026-118659"]},"retained":false,"historicalAffected":[]}],"coverage":[{"source":"cisa-kev:global","scope":"Complete CISA KEV catalog; all vendors. Missing entries do not establish absence of exploitation.","generation":"2026-11-07T04:26:54.6034598+00:00","complete":true,"records":1769,"lastAttemptAt":"2026-11-07T04:26:54.6034598+00:00","lastSuccessAt":"2026-11-07T04:26:54.7529863+00:00","error":null,"lastVerifiedAt":"2026-11-07T04:26:54.7529874+00:00","snapshotPublishedAt":null,"importing":false,"stagedRecords":0,"checkedIdentifiers":null,"expectedIdentifiers":null,"failedIdentifiers":null},{"source":"cve-program","scope":"Official CVE Program baseline and cumulative hourly delta; all vendors, published and rejected records","generation":"cve-bb5c9d5a08063ef076042e33dd72a7d0ffa4c4487efdcf3106e29ba55ec2ad57-f2cb380904b5f12493f409ae3c6d6c9a507fe9d31e15cd21f0d0b573e613fef1","complete":true,"records":420500,"lastAttemptAt":"2026-11-07T04:26:54.1988994+00:00","lastSuccessAt":"2026-11-07T03:26:58.5714293+00:00","error":null,"lastVerifiedAt":"2026-11-07T04:26:54.1988994+00:00","snapshotPublishedAt":"2026-11-07T03:24:26+00:00","importing":false,"stagedRecords":0,"checkedIdentifiers":null,"expectedIdentifiers":null,"failedIdentifiers":null},{"source":"euvd","scope":"Rolling EUVD lookups of CVE aliases in current public OSV archives; 500 identifiers per refresh, rechecked after 48 hours. Not a global EUVD catalog. Successful not-found lookups count as checked; they do not imply withdrawal or safety. No reader inventory is sent.","generation":"enrichment-715c0f3771e44acaadcabfd22fd19b53","complete":true,"records":13630,"lastAttemptAt":"2026-11-07T04:38:26.5467121+00:00","lastSuccessAt":"2026-11-07T04:38:26.542+00:00","error":null,"lastVerifiedAt":"2026-11-07T04:38:26.542+00:00","snapshotPublishedAt":null,"importing":false,"stagedRecords":0,"checkedIdentifiers":13685,"expectedIdentifiers":13685,"failedIdentifiers":0},{"source":"first-epss:nuget","scope":"FIRST EPSS for explicit CVE aliases in the collected public NuGet archive. Not a global EPSS backfill.","generation":"2026-11-07T04:26:54.6034598+00:00","complete":true,"records":1096,"lastAttemptAt":"2026-11-07T04:26:54.6034598+00:00","lastSuccessAt":"2026-11-07T04:26:54.7537548+00:00","error":null,"lastVerifiedAt":"2026-11-07T04:26:54.7537551+00:00","snapshotPublishedAt":null,"importing":false,"stagedRecords":0,"checkedIdentifiers":null,"expectedIdentifiers":null,"failedIdentifiers":null},{"source":"nvd","scope":"Rolling NVD lookups of CVE aliases in current public OSV archives; 500 identifiers per refresh, rechecked after 48 hours. Not a global NVD catalog. Successful not-found lookups count as checked; they do not imply withdrawal or safety. No reader inventory is sent.","generation":"enrichment-34343b4ea57e47c5a482c8fcf20a381e","complete":true,"records":13645,"lastAttemptAt":"2026-11-07T04:26:55.2642231+00:00","lastSuccessAt":"2026-11-07T01:26:55.938+00:00","error":null,"lastVerifiedAt":"2026-11-07T01:26:55.938+00:00","snapshotPublishedAt":null,"importing":false,"stagedRecords":0,"checkedIdentifiers":13685,"expectedIdentifiers":13685,"failedIdentifiers":0},{"source":"osv:Go","scope":"Complete OSV Go ecosystem archive, including withdrawn and malicious-package source records; statement counts are not unique CVE counts","generation":"go-0eb4d6dde62dffacd040ad992d4fd5a65cd7d0dc5f5f4cfa8b41967fc6f9ca5f","complete":true,"records":9914,"lastAttemptAt":"2026-11-07T04:26:54.5521252+00:00","lastSuccessAt":"2026-11-06T20:10:36.6450506+00:00","error":null,"lastVerifiedAt":"2026-11-07T04:26:54.5521252+00:00","snapshotPublishedAt":"2026-11-06T20:02:57+00:00","importing":false,"stagedRecords":0,"checkedIdentifiers":null,"expectedIdentifiers":null,"failedIdentifiers":null},{"source":"osv:NuGet","scope":"Complete OSV NuGet ecosystem archive, including GitHub Advisory Database records; NuGet version matching only","generation":"nuget-fde804134ecdda0ddd5ff5c26ee1fff5a6fa659311f7ef2e51c6ad54964db0e2","complete":true,"records":1971,"lastAttemptAt":"2026-11-07T04:26:54.3450753+00:00","lastSuccessAt":"2026-11-06T19:03:17.0399903+00:00","error":null,"lastVerifiedAt":"2026-11-07T04:26:54.3450753+00:00","snapshotPublishedAt":"2026-11-06T18:17:57+00:00","importing":false,"stagedRecords":0,"checkedIdentifiers":null,"expectedIdentifiers":null,"failedIdentifiers":null},{"source":"osv:crates.io","scope":"Complete OSV crates.io ecosystem archive, including withdrawn and malicious-package source records; statement counts are not unique CVE counts","generation":"crates.io-335633e78a15c9cde10a6025895b5617717087fb945489ae7e15d377bacf34a9","complete":true,"records":3055,"lastAttemptAt":"2026-11-07T04:26:54.565066+00:00","lastSuccessAt":"2026-11-06T16:03:00.7615789+00:00","error":null,"lastVerifiedAt":"2026-11-07T04:26:54.565066+00:00","snapshotPublishedAt":"2026-11-06T16:02:48+00:00","importing":false,"stagedRecords":0,"checkedIdentifiers":null,"expectedIdentifiers":null,"failedIdentifiers":null},{"source":"osv:npm","scope":"Complete OSV npm ecosystem archive, including withdrawn and malicious-package source records; statement counts are not unique CVE counts","generation":"npm-a0b728bc1c5526b5429930c00621636eba8655069c176697c3080f8377619ad7","complete":true,"records":231291,"lastAttemptAt":"2026-11-07T04:26:54.4507985+00:00","lastSuccessAt":"2026-11-07T00:28:51.1983528+00:00","error":null,"lastVerifiedAt":"2026-11-07T04:26:54.4507985+00:00","snapshotPublishedAt":"2026-11-06T23:33:08+00:00","importing":false,"stagedRecords":0,"checkedIdentifiers":null,"expectedIdentifiers":null,"failedIdentifiers":null}]}