{"id":"GHSA-7p8r-x3mc-p8w7","revision":null,"records":[{"revision":"de4fb91f862240c5936c06bf5cc13f2e","observedAt":"2026-10-23T15:48:27.903+00:00","statement":{"source":"cve-program","id":"CVE-2026-18446","aliases":[],"title":"fast-uri vulnerable to host confusion via backslash authority introducer","description":"fast-uri before 4.1.2, 3.1.5, and 2.4.4 requires a literal double forward slash to recognize a URI authority, so a reference that uses a backslash based introducer in place of it (backslash backslash, forward slash backslash, or backslash forward slash) is parsed with no authority and folds into the path. Node's native WHATWG URL parser instead treats a backslash as interchangeable with a forward slash for special schemes, so the two parsers extract different hosts from the same input. Applications that use fast-uri to enforce host based policy such as allowlists, SSRF filtering, or redirect validation before passing the same URL into Node's URL or fetch consumers can be steered to an unintended host. Upgrade to fast-uri 4.1.2, 3.1.5, or 2.4.4.","state":0,"publishedAt":"2026-07-31T14:37:01.584+00:00","modifiedAt":"2026-07-31T17:47:35.325+00:00","affected":[{"ecosystem":"Vendor product","name":"fast-uri","ranges":[],"versions":[],"rawVersionEvidence":"{\n                    \"vendor\": \"fast-uri\",\n                    \"product\": \"fast-uri\",\n                    \"defaultStatus\": \"unaffected\",\n                    \"versions\": [\n                        {\n                            \"versionType\": \"semver\",\n                            \"status\": \"affected\",\n                            \"version\": \"4.0.0\",\n                            \"lessThan\": \"4.1.2\"\n                        },\n                        {\n                            \"versionType\": \"semver\",\n                            \"status\": \"unaffected\",\n                            \"version\": \"4.1.2\"\n                        },\n                        {\n                            \"versionType\": \"semver\",\n                            \"status\": \"affected\",\n                            \"version\": \"3.0.0\",\n                            \"lessThan\": \"3.1.5\"\n                        },\n                        {\n                            \"versionType\": \"semver\",\n                            \"status\": \"unaffected\",\n                            \"version\": \"3.1.5\"\n                        },\n                        {\n                            \"versionType\": \"semver\",\n                            \"status\": \"affected\",\n                            \"version\": \"0\",\n                            \"lessThan\": \"2.4.4\"\n                        },\n                        {\n                            \"versionType\": \"semver\",\n                            \"status\": \"unaffected\",\n                            \"version\": \"2.4.4\"\n                        }\n                    ],\n                    \"packageURL\": \"pkg:npm/fast-uri\"\n                }"}],"metrics":[{"system":"CVSS 3.1","vector":"CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:H/A:N","score":7.5,"severity":"HIGH"}],"references":["https://github.com/fastify/fast-uri/security/advisories/GHSA-7p8r-x3mc-p8w7","https://cna.openjsf.org/security-advisories.html"],"sourceUrl":"https://www.cve.org/CVERecord?id=CVE-2026-18446","license":"CVE Program Terms of Use","key":"cve-program:CVE-2026-18446","identifiers":["CVE-2026-18446"]},"retained":false,"historicalAffected":[]},{"revision":"9402e3bda122434a8b0f803cfa36ebfa","observedAt":"2026-11-15T07:33:14.376+00:00","statement":{"source":"euvd","id":"EUVD-2026-51553","aliases":["CVE-2026-18446","GHSA-7p8r-x3mc-p8w7"],"title":"fast-uri before 4.1.2, 3.1.5, and 2.4.4 requires a literal double forward slash to recognize a URI authority, so a reference that uses a backslash based introducer in place of it (backslash backslash, forward slash backslash, or backslash f…","description":"fast-uri before 4.1.2, 3.1.5, and 2.4.4 requires a literal double forward slash to recognize a URI authority, so a reference that uses a backslash based introducer in place of it (backslash backslash, forward slash backslash, or backslash forward slash) is parsed with no authority and folds into the path. Node's native WHATWG URL parser instead treats a backslash as interchangeable with a forward slash for special schemes, so the two parsers extract different hosts from the same input. Applications that use fast-uri to enforce host based policy such as allowlists, SSRF filtering, or redirect validation before passing the same URL into Node's URL or fetch consumers can be steered to an unintended host. Upgrade to fast-uri 4.1.2, 3.1.5, or 2.4.4.","state":0,"publishedAt":null,"modifiedAt":null,"affected":[],"metrics":[{"system":"EUVD CVSS 3.1","vector":"CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:H/A:N","score":7.5,"severity":null}],"references":["https://github.com/fastify/fast-uri/security/advisories/GHSA-7p8r-x3mc-p8w7","https://cna.openjsf.org/security-advisories.html"],"sourceUrl":"https://euvd.enisa.europa.eu/vulnerability/EUVD-2026-51553","license":"ENISA EUVD · source terms and attribution apply","enrichment":{"sourceStatus":null,"weaknesses":[],"productCriteria":[],"sourceDates":{"datePublished":"Jul 31, 2026, 2:37:01 PM","dateUpdated":"Jul 31, 2026, 5:47:35 PM"},"relatedAdvisories":[{"id":"RHSA-2026:87410","title":"Red Hat Security Advisory: RHOAI 2.25.12 - Red Hat OpenShift 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Hat Security Advisory: OpenShift Container Platform 4.16.70 bug fix and security update","vulnerabilityIds":["CVE-2026-18446","CVE-2026-25681","CVE-2026-33814","CVE-2026-34986","CVE-2026-54423"]},{"id":"WID-SEC-W-2026-2923","title":"Atlassian Produkte (Bamboo, Bitbucket, Confluence, Crucible, Fisheye, und Jira): Mehrere Schwachstellen","vulnerabilityIds":["CVE-2019-13990","CVE-2021-44906","CVE-2022-1471","CVE-2022-23521","CVE-2022-3517","CVE-2022-41903","CVE-2023-22518","CVE-2023-22522","CVE-2023-22523","CVE-2023-22524","CVE-2023-22527","CVE-2023-45133","CVE-2023-46604","CVE-2025-14813","CVE-2026-0603","CVE-2026-10050","CVE-2026-12143","CVE-2026-12151","CVE-2026-12802","CVE-2026-12803","CVE-2026-12816","CVE-2026-13149","CVE-2026-13506","CVE-2026-13676","CVE-2026-14257","CVE-2026-14682","CVE-2026-16221","CVE-2026-18446","CVE-2026-21582","CVE-2026-2332","CVE-2026-24734","CVE-2026-25639","CVE-2026-27601","CVE-2026-27606","CVE-2026-29786","CVE-2026-3505","CVE-2026-40983","CVE-2026-40984","CVE-2026-41284","CVE-2026-41842","CVE-2026-41845","CVE-2026-41850","CVE-2026-41851","CVE-2026-41907","CVE-2026-42033","CVE-2026-42035","CVE-2026-42041","CVE-2026-42198","CVE-2026-42583","CVE-2026-42587","CVE-2026-43513","CVE-2026-44249","CVE-2026-44486","CVE-2026-44487","CVE-2026-44488","CVE-2026-44490","CVE-2026-44492","CVE-2026-44494","CVE-2026-44495","CVE-2026-44496","CVE-2026-45416","CVE-2026-45623","CVE-2026-46625","CVE-2026-47838","CVE-2026-4800","CVE-2026-48043","CVE-2026-48779","CVE-2026-48801","CVE-2026-50010","CVE-2026-53434","CVE-2026-54291","CVE-2026-54512","CVE-2026-54513","CVE-2026-55685","CVE-2026-55831","CVE-2026-55833","CVE-2026-56745","CVE-2026-56819","CVE-2026-58059","CVE-2026-58060","CVE-2026-59639","CVE-2026-59642","CVE-2026-59869","CVE-2026-59871","CVE-2026-59873","CVE-2026-59874","CVE-2026-59887","CVE-2026-59901","CVE-2026-6321","CVE-2026-6322","CVE-2026-67320","CVE-2026-69152","CVE-2026-69192"]},{"id":"RHSA-2026:92510","title":"Red Hat Security Advisory: RHOAI 3.4.6 - Red Hat OpenShift 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Hat Security Advisory: OpenShift Container Platform 4.22.15 security and extras update","vulnerabilityIds":["CVE-2026-16221","CVE-2026-18446","CVE-2026-33814","CVE-2026-45819","CVE-2026-75899","CVE-2026-75931","CVE-2026-75975","CVE-2026-76172","CVE-2026-84292","CVE-2026-84394"]},{"id":"RHSA-2026:71454","title":"Red Hat Security Advisory: OpenShift Container Platform 4.22.16 bug fix and security update","vulnerabilityIds":["CVE-2026-18446","CVE-2026-27136","CVE-2026-33814","CVE-2026-41178","CVE-2026-45819","CVE-2026-46597","CVE-2026-75885","CVE-2026-75886","CVE-2026-75887"]},{"id":"RHSA-2026:49401","title":"Red Hat Security Advisory: Red Hat Hardened Images RPMs Security Update","vulnerabilityIds":["CVE-2026-18446","CVE-2026-67319","CVE-2026-69198"]},{"id":"RHSA-2026:49387","title":"Red Hat Security Advisory: Red Hat Hardened Images RPMs Security Update","vulnerabilityIds":["CVE-2026-18446","CVE-2026-67319"]},{"id":"RHSA-2026:68547","title":"Red Hat Security Advisory: OpenShift 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producten","vulnerabilityIds":["CVE-2021-44906","CVE-2022-3517","CVE-2023-45133","CVE-2025-14813","CVE-2026-0603","CVE-2026-2332","CVE-2026-3505","CVE-2026-4800","CVE-2026-6321","CVE-2026-6322","CVE-2026-10050","CVE-2026-12143","CVE-2026-12151","CVE-2026-12802","CVE-2026-12803","CVE-2026-12816","CVE-2026-13149","CVE-2026-13506","CVE-2026-13676","CVE-2026-14257","CVE-2026-14682","CVE-2026-16221","CVE-2026-18446","CVE-2026-21582","CVE-2026-24734","CVE-2026-25639","CVE-2026-27601","CVE-2026-27606","CVE-2026-29786","CVE-2026-40983","CVE-2026-40984","CVE-2026-41284","CVE-2026-41842","CVE-2026-41845","CVE-2026-41850","CVE-2026-41851","CVE-2026-41907","CVE-2026-42033","CVE-2026-42035","CVE-2026-42041","CVE-2026-42198","CVE-2026-42583","CVE-2026-42587","CVE-2026-43513","CVE-2026-44249","CVE-2026-44486","CVE-2026-44487","CVE-2026-44488","CVE-2026-44490","CVE-2026-44492","CVE-2026-44494","CVE-2026-44495","CVE-2026-44496","CVE-2026-45416","CVE-2026-45623","CVE-2026-46625","CVE-2026-47838","CVE-2026-48043","CVE-2026-48779","CVE-2026-48801","CVE-2026-50010","CVE-2026-53434","CVE-2026-54291","CVE-2026-54512","CVE-2026-54513","CVE-2026-55685","CVE-2026-55831","CVE-2026-55833","CVE-2026-56745","CVE-2026-56819","CVE-2026-58059","CVE-2026-58060","CVE-2026-59639","CVE-2026-59642","CVE-2026-59869","CVE-2026-59871","CVE-2026-59873","CVE-2026-59874","CVE-2026-59887","CVE-2026-59901","CVE-2026-67320","CVE-2026-69152","CVE-2026-69192"]},{"id":"WID-SEC-W-2026-3376","title":"Atlassian Bamboo, Bitbucket, Confluence, Fisheye/Crucible, Jira Software und Jira Service Management: Mehrere Schwachstellen","vulnerabilityIds":["CVE-2022-46175","CVE-2026-12143","CVE-2026-12802","CVE-2026-12803","CVE-2026-12816","CVE-2026-13506","CVE-2026-13676","CVE-2026-14257","CVE-2026-14682","CVE-2026-16221","CVE-2026-18446","CVE-2026-21582","CVE-2026-42583","CVE-2026-44249","CVE-2026-44728","CVE-2026-45416","CVE-2026-45623","CVE-2026-45674","CVE-2026-47691","CVE-2026-47759","CVE-2026-47761","CVE-2026-47762","CVE-2026-4800","CVE-2026-48043","CVE-2026-48801","CVE-2026-50010","CVE-2026-53404","CVE-2026-53434","CVE-2026-54428","CVE-2026-54512","CVE-2026-54513","CVE-2026-55153","CVE-2026-55276","CVE-2026-55831","CVE-2026-55833","CVE-2026-56745","CVE-2026-56819","CVE-2026-58059","CVE-2026-58060","CVE-2026-59639","CVE-2026-59642","CVE-2026-59650","CVE-2026-59869","CVE-2026-59879","CVE-2026-59880","CVE-2026-59887","CVE-2026-59901","CVE-2026-67213","CVE-2026-67214","CVE-2026-67320","CVE-2026-68763","CVE-2026-69152","CVE-2026-73086","CVE-2026-73088","CVE-2026-73089","CVE-2026-73507","CVE-2026-73566","CVE-2026-73646","CVE-2026-75140","CVE-2026-75595","CVE-2026-75899","CVE-2026-75975","CVE-2026-76172","CVE-2026-8763"]}],"note":"EUVD source date text has no stated timezone and is retained without inventing a UTC instant. Related bulletin membership is not an alias, common cause or applicability claim. A missing vector with a zero score is treated as unrated. Complete vendor/product and underlying source evidence remains in the original JSON."},"key":"euvd:EUVD-2026-51553","identifiers":["EUVD-2026-51553","CVE-2026-18446","GHSA-7p8r-x3mc-p8w7"]},"retained":false,"historicalAffected":[]},{"revision":"2fe27ad779634d4ca9e8463476a8c838","observedAt":"2026-10-25T05:17:25.909+00:00","statement":{"source":"nvd","id":"CVE-2026-18446","aliases":[],"title":"fast-uri before 4.1.2, 3.1.5, and 2.4.4 requires a literal double forward slash to recognize a URI authority, so a reference that uses a backslash based introducer in place of it (backslash backslash, forward slash backslash, or backslash f…","description":"fast-uri before 4.1.2, 3.1.5, and 2.4.4 requires a literal double forward slash to recognize a URI authority, so a reference that uses a backslash based introducer in place of it (backslash backslash, forward slash backslash, or backslash forward slash) is parsed with no authority and folds into the path. Node's native WHATWG URL parser instead treats a backslash as interchangeable with a forward slash for special schemes, so the two parsers extract different hosts from the same input. Applications that use fast-uri to enforce host based policy such as allowlists, SSRF filtering, or redirect validation before passing the same URL into Node's URL or fetch consumers can be steered to an unintended host. Upgrade to fast-uri 4.1.2, 3.1.5, or 2.4.4.","state":0,"publishedAt":"2026-07-31T15:16:27.983+00:00","modifiedAt":"2026-09-02T14:42:38.677+00:00","affected":[],"metrics":[{"system":"CVSS 3.1 · ce714d77-add3-4f53-aff5-83d477b104bb · Secondary","vector":"CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:H/A:N","score":7.5,"severity":"HIGH"}],"references":["https://cna.openjsf.org/security-advisories.html","https://github.com/fastify/fast-uri/security/advisories/GHSA-7p8r-x3mc-p8w7"],"sourceUrl":"https://nvd.nist.gov/vuln/detail/CVE-2026-18446","license":"NIST NVD usage terms; underlying source attribution retained","enrichment":{"sourceStatus":"Analyzed","weaknesses":["CWE-436"],"productCriteria":["cpe:2.3:a:openjsf:fast-uri:*:*:*:*:*:node.js:*:*"],"sourceDates":{"published":"2026-07-31T15:16:27.983","lastModified":"2026-09-02T14:42:38.677"},"relatedAdvisories":[],"note":"NVD analysis and CPE criteria are source context, not proof that a package or your environment is affected. Complete affected data, logical configurations and SSVC are retained in the original JSON."},"key":"nvd:CVE-2026-18446","identifiers":["CVE-2026-18446"]},"retained":false,"historicalAffected":[]},{"revision":"c6c75969afa54e9abb24b6d00d5228ff","observedAt":"2026-10-24T13:17:17.793+00:00","statement":{"source":"osv","id":"GHSA-7p8r-x3mc-p8w7","aliases":["CVE-2026-18446"],"title":"fast-uri vulnerable to host confusion via backslash authority introducer","description":"### Impact\n\n`fast-uri` v4.1.1 and earlier require a literal `//` to recognize a URI authority, so a reference that uses `\\\\`, `/\\`, or `\\/` as the authority introducer (in place of `//`, after an optional scheme) is parsed with no authority: the sequence and everything after it fold into the path. Node's native WHATWG `URL` (used by `fetch()`, `undici`, and Node's `http`/`https` clients) instead treats `\\` as interchangeable with `/` for special schemes (`http`, `https`, `ws`, `wss`, `ftp`, `file`), so the two parsers extract different hosts from the same input.\n\nFor example, `fast-uri` resolves `\\\\evil.com/path` against base `https://allowed.com/` to `https://allowed.com/%5C%5Cevil.com/path` (confined to the trusted host), while Node's WHATWG URL resolves the same reference to `https://evil.com/path`.\n\nApplications that use `fast-uri` to enforce host-based policy (allowlists, denylists, loopback/SSRF filtering, redirect validation, outbound proxy routing) before passing the same URL into Node's URL or `fetch()` consumers see a policy/use desync and can be steered to an unintended destination.\n\n### Patches\n\nUpgrade to `fast-uri` v4.1.2, v3.1.5, v2.4.4.\n\n### Workarounds\n\nNone. Upgrade to the patched version.","state":0,"publishedAt":"2026-08-03T19:16:43+00:00","modifiedAt":"2026-09-10T03:50:53.4684383+00:00","affected":[{"ecosystem":"npm","name":"fast-uri","ranges":[{"type":"SEMVER","events":[{"kind":"introduced","version":"0"},{"kind":"fixed","version":"2.4.4"}]}],"versions":[],"rawVersionEvidence":null},{"ecosystem":"npm","name":"fast-uri","ranges":[{"type":"SEMVER","events":[{"kind":"introduced","version":"3.0.0"},{"kind":"fixed","version":"3.1.5"}]}],"versions":[],"rawVersionEvidence":null},{"ecosystem":"npm","name":"fast-uri","ranges":[{"type":"SEMVER","events":[{"kind":"introduced","version":"4.0.0"},{"kind":"fixed","version":"4.1.2"}]}],"versions":[],"rawVersionEvidence":null}],"metrics":[{"system":"CVSS_V3","vector":"CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:H/A:N","score":null,"severity":null},{"system":"Publisher rating","vector":null,"score":null,"severity":"HIGH"}],"references":["https://github.com/fastify/fast-uri/security/advisories/GHSA-7p8r-x3mc-p8w7","https://nvd.nist.gov/vuln/detail/CVE-2026-18446","https://github.com/fastify/fast-uri/commit/f3c6c905f47831007490f466c5945012e905cc52","https://cna.openjsf.org/security-advisories.html","https://github.com/fastify/fast-uri","https://github.com/fastify/fast-uri/releases/tag/v4.1.2"],"sourceUrl":"https://github.com/advisories/GHSA-7p8r-x3mc-p8w7","license":"GitHub Advisory Database · CC-BY-4.0","key":"osv:GHSA-7p8r-x3mc-p8w7","identifiers":["GHSA-7p8r-x3mc-p8w7","CVE-2026-18446"]},"retained":false,"historicalAffected":[]}],"coverage":[{"source":"cisa-kev:global","scope":"Complete CISA KEV catalog; all vendors. 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