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Complete affected data, logical configurations and SSVC are retained in the original JSON."},"key":"nvd:CVE-2026-44372","identifiers":["CVE-2026-44372"]},"retained":false,"historicalAffected":[]},{"revision":"5ae1681e520247ee92cbe0b075414b6b","observedAt":"2026-10-24T13:17:17.793+00:00","statement":{"source":"osv","id":"GHSA-9phm-9p8f-hw5m","aliases":["CVE-2026-44372"],"title":"Nitro has an Open Redirect via Protocol-Relative URL Bypass in Wildcard Route Rules","description":"A redirect route rule like:\n\n```ts\nrouteRules: {\n  \"/legacy/**\": { redirect: \"/**\" }\n}\n```\n\nis intended to rewrite paths within the same host. Before the patch, an attacker could turn the rewrite into a cross-host redirect by sliding an extra slash in after the rule prefix. Example exploit:\n\n```\nGET /legacy//evil.com\n```\n\nNitro stripped `/legacy` from the matched pathname and joined the remainder against the rule's target. The remainder was `//evil.com`, which the join preserved verbatim, so Nitro responded with `Location: //evil.com`. Browsers resolve `//evil.com` as a protocol-relative URL against the current scheme, sending the user to `https://evil.com`. \n\n### Are you affected?\n\nUsers may be affected if **all** of the following are true:\n\n1. Their project uses Nitro's `routeRules` with a `redirect` entry.\n2. The target uses a `/**` wildcard suffix to forward sub-paths (e.g. `redirect: \"/**\"`, `redirect: \"/new/**\"`, `proxy: { to: \"http://upstream/**\" }`).\n3. The `redirect` rule is _not_ handled natively at the CDN layer. The `vercel`, `netlify`, `cloudflare-pages`, and `edgeone` presets translate `routeRules.redirect` into platform config (`vercel.json`, `_redirects`, EdgeOne v3 config) and serve the redirect at the edge — those deployments bypass the Nitro runtime entirely and are not affected. Every other preset executes the redirect through the Nitro runtime and can be vulnerable.\n\n## Impact\n\nOpen redirect from any host serving Nitro with a wildcard `redirect` rule. The redirect target is fully attacker-controlled, the URL looks legitimate (it starts with the victim's domain), and the browser silently follows it.\n\n## Patched versions\n\nUpgrade to one of:\n\n- [2.13.4](https://github.com/nitrojs/nitro/releases/tag/v2.13.4) or later (or upgrade lockfile with latest ufo 1.6.4+)\n- [3.0.260429-beta](https://github.com/nitrojs/nitro/releases/tag/v3.0.260429-beta) or later (https://github.com/nitrojs/nitro/pull/4236)\n\nThe fix has two parts:\n\n1. `ufo` is bumped to `^1.6.4` ([unjs/ufo@5cd9e67](https://github.com/unjs/ufo/commit/5cd9e676711af3f4e4b5398ddf6ca8d52c1c7e1f)), which collapses any run of leading slashes to a single `/` inside `withoutBase`. This covers the typical `\"/scope/**\"` rule.\n2. The Nitro runtime additionally collapses leading `//` before joining when the rule path itself is `/**` (in rare case which case `withoutBase` is never called and the raw pathname flows straight into `joinURL(\"\", …)`).","state":0,"publishedAt":"2026-05-06T23:02:45+00:00","modifiedAt":"2026-06-09T02:15:07.2142764+00:00","affected":[{"ecosystem":"npm","name":"nitro","ranges":[{"type":"SEMVER","events":[{"kind":"introduced","version":"0"},{"kind":"fixed","version":"3.0.260429-beta"}]}],"versions":[],"rawVersionEvidence":null},{"ecosystem":"npm","name":"nitropack","ranges":[{"type":"SEMVER","events":[{"kind":"introduced","version":"0"},{"kind":"fixed","version":"2.13.4"}]}],"versions":[],"rawVersionEvidence":null}],"metrics":[{"system":"CVSS_V3","vector":"CVSS:3.1/AV:N/AC:L/PR:N/UI:R/S:C/C:L/I:L/A:N","score":null,"severity":null},{"system":"CVSS_V4","vector":"CVSS:4.0/AV:N/AC:L/AT:N/PR:N/UI:P/VC:N/VI:N/VA:N/SC:L/SI:L/SA:N","score":null,"severity":null},{"system":"Publisher rating","vector":null,"score":null,"severity":"MODERATE"}],"references":["https://github.com/nitrojs/nitro/security/advisories/GHSA-9phm-9p8f-hw5m","https://nvd.nist.gov/vuln/detail/CVE-2026-44372","https://github.com/nitrojs/nitro/pull/4236","https://github.com/unjs/ufo/commit/5cd9e676711af3f4e4b5398ddf6ca8d52c1c7e1f","https://github.com/nitrojs/nitro","https://github.com/nitrojs/nitro/releases/tag/v2.13.4","https://github.com/nitrojs/nitro/releases/tag/v3.0.260429-beta"],"sourceUrl":"https://github.com/advisories/GHSA-9phm-9p8f-hw5m","license":"GitHub Advisory Database · CC-BY-4.0","key":"osv:GHSA-9phm-9p8f-hw5m","identifiers":["GHSA-9phm-9p8f-hw5m","CVE-2026-44372"]},"retained":false,"historicalAffected":[]}],"coverage":[{"source":"cisa-kev:global","scope":"Complete CISA KEV catalog; all vendors. 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