CVE-2026-21884
2 advisories.
npm/react-router CVE-2026-21884: high 8.2, EPSS 0.53%
React Router SSR XSS in ScrollRestoration
Action: Upgrade react-router to 7.12.0 or later.
npm i react-router@7.12.0Affected
| introduced | fixed | last affected |
|---|---|---|
| 7.0.0 | 7.12.0 | - |
Fixed versions
| 7.12.0 |
Sources
- osv: GHSA-8v8x-cx79-35w7
- https://github.com/remix-run/react-router/security/advisories/GHSA-8v8x-cx79-35w7
- https://nvd.nist.gov/vuln/detail/CVE-2026-21884
- https://github.com/remix-run/react-router/pull/14705
- https://github.com/remix-run/react-router/commit/c89c32c562a7723c45ee71dab1c892acaf7a608d
- https://access.redhat.com/errata/RHSA-2026:19712
- https://access.redhat.com/errata/RHSA-2026:3782
- https://access.redhat.com/errata/RHSA-2026:3958
- https://access.redhat.com/errata/RHSA-2026:3960
- https://access.redhat.com/security/cve/CVE-2026-21884
- https://bugzilla.redhat.com/show_bug.cgi?id=2428421
- https://github.com/remix-run/react-router
- https://github.com/remix-run/react-router/blob/react-router%407.12.0/CHANGELOG.md#v7120
- https://security.access.redhat.com/data/csaf/v2/vex/2026/cve-2026-21884.json
CVE-2026-21884 · published · modified · JSON
npm/@remix-run/react CVE-2026-21884: high 8.2, EPSS 0.53%
React Router SSR XSS in ScrollRestoration
Action: Upgrade @remix-run/react to 2.17.3 or later.
npm i @remix-run/react@2.17.3Affected
| introduced | fixed | last affected |
|---|---|---|
| 0 | 2.17.3 | - |
Fixed versions
| 2.17.3 |
Sources
- osv: GHSA-8v8x-cx79-35w7#npm/@remix-run/react
- https://github.com/remix-run/react-router/security/advisories/GHSA-8v8x-cx79-35w7
- https://nvd.nist.gov/vuln/detail/CVE-2026-21884
- https://github.com/remix-run/react-router/pull/14705
- https://github.com/remix-run/react-router/commit/c89c32c562a7723c45ee71dab1c892acaf7a608d
- https://access.redhat.com/errata/RHSA-2026:19712
- https://access.redhat.com/errata/RHSA-2026:3782
- https://access.redhat.com/errata/RHSA-2026:3958
- https://access.redhat.com/errata/RHSA-2026:3960
- https://access.redhat.com/security/cve/CVE-2026-21884
- https://bugzilla.redhat.com/show_bug.cgi?id=2428421
- https://github.com/remix-run/react-router
- https://github.com/remix-run/react-router/blob/react-router%407.12.0/CHANGELOG.md#v7120
- https://security.access.redhat.com/data/csaf/v2/vex/2026/cve-2026-21884.json
CVE-2026-21884 · published · modified · JSON