Is react-router 7.12 vulnerable?

npm · 1 release from 7.12.0 to 7.12.0 · latest react-router is 8.5.1 · checked 1 Nov 2026

Yes: 13 known advisories

Yes. react-router 7.12.0, the last 7.12 release, is affected by 13 known security advisories (6 high, 6 medium, 1 low), including CVE-2026-55685, CVE-2026-34077, CVE-2026-42342. Upgrade to 7.18.2 or later to fix all of them.

Upgrade with:npm install react-router@7.18.2

Is your project affected?

Private repo? Upload its lockfile instead, or connect GitHub to check every repo.

Advisories affecting react-router 7.12.0

  • HighGHSA-qwww-vcr4-c8h224 Jul 2026

    React Router: RSC Mode CSRF Bypass Allows Action Execution Before 400 Response

    Affected
    >=7.12.0 <7.18.2 · >=8.0.0 <8.3.0
    Fixed in
    7.18.2, 8.3.0
  • HighCVE-2026-55685GHSA-chx6-hx7r-mcp524 Jul 2026

    React Router: Unauthenticated Denial of Service via Inefficient Route Matching

    Affected
    >=7.0.0 <7.18.0
    Fixed in
    7.18.0
  • MediumCVE-2026-53669GHSA-wrjc-x8rr-h8h623 Jul 2026

    React Router: Open redirect via backslash in <Link> and useNavigate (CVE-2025-68470 bypass)

    Affected
    >=6.0.0 <7.18.0
    Fixed in
    7.18.0
  • MediumCVE-2026-53668GHSA-jjmj-jmhj-qwj223 Jul 2026

    React Router: Open redirect leading to XSS

    Affected
    >=7.9.6 <7.13.0
    Fixed in
    7.13.0
  • MediumCVE-2026-53667GHSA-h8fp-f39c-q6mh23 Jul 2026

    React Router: RSCErrorHandler Missing Protocol Validation (XSS)

    Affected
    >=7.11.0 <7.18.0
    Fixed in
    7.18.0
  • MediumCVE-2026-53666GHSA-337j-9hxr-rhxg23 Jul 2026

    React Router: Arbitrary Constructor Injection via deserializeErrors() in React Router SSR Hydration

    Affected
    >=6.4.0 <7.18.0
    Fixed in
    7.18.0
  • LowCVE-2026-53663GHSA-84g9-w2xq-vcv615 Jun 2026

    React Router: Potential CSRF via PUT/PATCH/DELETE document requests

    Affected
    >=7.12.0 <7.15.1
    Fixed in
    7.15.1
  • HighCVE-2026-34077GHSA-rxv8-25v2-qmq84 Jun 2026

    React Router vulnerable to Denial of Service via reflected user input in single-fetch

    Affected
    >=7.0.0 <7.14.0
    Fixed in
    7.14.0
  • HighCVE-2026-42342GHSA-8x6r-g9mw-2r783 Jun 2026

    React Router vulnerable to DoS via unbounded path expansion in __manifest endpoint

    Affected
    >=7.0.0 <7.15.0
    Fixed in
    7.15.0
  • HighCVE-2026-42211GHSA-49rj-9fvp-4h2h3 Jun 2026

    React Router's vendored turbo-stream v2 allows arbitrary constructor invocation via TYPE_ERROR deserialization leading to Unauth RCE

    Affected
    >=7.0.0 <7.14.2
    Fixed in
    7.14.2
  • MediumCVE-2026-40181GHSA-2j2x-hqr9-3h423 Jun 2026

    React Router's same-origin redirect with path starting // causes open redirect via protocol-relative URL reinterpretation

    Affected
    >=7.0.0 <7.14.1 · >=6.7.0 <6.30.4
    Fixed in
    6.30.4, 7.14.1
  • HighCVE-2026-33245GHSA-8646-j5j9-6r623 Jun 2026

    React Router vulnerable to XSS in unstable RSC redirect handling via javascript: redirect targets

    Affected
    >=7.7.0 <7.13.2
    Fixed in
    7.13.2
  • MediumCVE-2026-33244GHSA-f22v-gfqf-p8f33 Jun 2026

    React Router has stored XSS via unescaped Location header in prerendered redirect HTML

    Affected
    >=7.5.1 <7.13.2
    Fixed in
    7.13.2

Which of your client projects are still on react-router 7.12?

NPMscan reads the lockfiles in every GitHub repo you pick, finds the exact react-router version each one installs, and checks it against these advisories. Each finding comes with the command that fixes it.

Other react-router versions

Advisory data from OSV.dev (opens OSV.dev in a new tab), which includes the GitHub Advisory Database. Release list from the npm registry. Refreshed daily.