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

When using React Router v7's unstable RSC APIs, there exists a potential client-side XSS issue in the RSC redirect handling if redirects are coming from untrusted sources !NOTE This only impacts your application if you are using the unstable RSC APIs in React Router...

@accounter/client (>=0.0.6-alpha-20250716191627-847a4f732a66f2443e3141d5ef77222a6579ded3, <=0.0.11-alpha-20260328161521-814e4fc7c5b0b6b919590e293c0fac45b7c2513d), @boxyhq/react-ui (>=3.5.2, <=3.5.3) +155 more potentially affected by CVE-2026-33245 via react-router (>=7.7.0, <=7.13.1-pre.0)

react-router NPM version =7.7.0, =0.0.6-alpha-20250716191627-847a4f732a66f2443e3141d5ef77222a6579ded3, =3.5.2, =1.0.1-MON-198407-add-selinux-sudo-check.0, =0.0.1, =1.0.3, =3.3.7, =3.0.0-alpha.2, =3.2.0-beta.0, =0.1.9, =0.0.1, =1.21.9, =1.21.9, =0.3.1, =0.5.1 - @depup/react-router-dom 7.13.1-depup...

@accounter/client (>=0.0.5-alpha-20250418160359-9049f823132a66e39d4d7a239567055e4e03266b, <=0.0.11-alpha-20260328161521-814e4fc7c5b0b6b919590e293c0fac45b7c2513d), @boxyhq/react-ui (>=3.4.1, <=3.5.3) +192 more potentially affected by CVE-2026-33244 via react-router (>=7.5.1, <=7.13.1-pre.0)

react-router NPM version =7.5.1, =0.0.5-alpha-20250418160359-9049f823132a66e39d4d7a239567055e4e03266b, =3.4.1, =0.2.3, =1.0.1-MON-198407-add-selinux-sudo-check.0, =0.0.1, =1.0.3, =0.1.0, =3.3.7, =3.0.0-alpha.2, =3.2.0-beta.0, =15.9.0, =0.1.9, =0.0.1-dev.8, =0.0.2-1 and more Source cves:...

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

When using React Router v7 Framework Mode with Pre-rendering enabled, an improper neutralization of the HTTP Location header value can permit Cross-Site Scripting XSS in statically generated HTML files if the redirect location comes from an untrusted source. !NOTE This does not impact your React...

GHSA-F22V-GFQF-P8F3 React Router has stored XSS via unescaped Location header in prerendered redirect HTML

When using React Router v7 Framework Mode with Pre-rendering enabled, an improper neutralization of the HTTP Location header value can permit Cross-Site Scripting XSS in statically generated HTML files if the redirect location comes from an untrusted source. !NOTE This does not impact your React...

EUVD-2026-33986

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

Important: Red Hat Security Advisory: OpenShift Container Platform 4.18.43 security and extras update

Red Hat OpenShift Container Platform release 4.18.43 is now available with updates to packages and images that fix several bugs. This release includes a security update for Red Hat OpenShift Container Platform 4.18. Red Hat Product Security has rated this update as having a security impact of...

SUSE CVE-2026-33244

React Router is a router for React. In versions 7.5.1 through 7.13.1, when using Framework Mode with pre-rendering enabled, improper neutralization of the HTTP Location header value can permit Cross-Site Scripting XSS in the statically generated HTML files if the redirect location comes from an...

PT-2026-46083

Certain URLs passed to the redirect function can trigger an open redirect to an external domain depending on the level of validation done by the application prior to returning the redirect. !NOTE This does not impact your React Router application if you are using Declarative Mode...

PT-2026-46087

When using React Router v7's unstable RSC APIs, there exists a potential client-side XSS issue in the RSC redirect handling if redirects are coming from untrusted sources !NOTE This only impacts your application if you are using the unstable RSC APIs in React Router...

PT-2026-46095

When using React Router v7 Framework Mode with Pre-rendering enabled, an improper neutralization of the HTTP Location header value can permit Cross-Site Scripting XSS in statically generated HTML files if the redirect location comes from an untrusted source. !NOTE This does not impact your React...

PT-2026-46089

There exists a potential DOS attack vector in React Router Framework Mode applications as well as Remix v2.10.0 - 2.17.4. Certain requests can be crafted to consume disproportionate resources on the server, resulting in response time degredation and/or service unavailability for end users. !NOTE...

PT-2026-46085

When using React Router v7 in Framework Mode, there exists a combination of steps that could potentially allow unauthorized RCE through external requests. This first requires the application code to have an existing prototype pollution vulnerability. This can be leveraged into a 2-step attack in...

@accounter/client (>=0.0.6-alpha-20250716191627-847a4f732a66f2443e3141d5ef77222a6579ded3, <=0.0.11-alpha-20260328161521-814e4fc7c5b0b6b919590e293c0fac45b7c2513d), @boxyhq/react-ui (>=3.5.2, <=3.5.3) +155 more potentially affected by CVE-2026-33245 via react-router (>=7.7.0, <=7.13.1-pre.0)

react-router NPM version =7.7.0, =0.0.6-alpha-20250716191627-847a4f732a66f2443e3141d5ef77222a6579ded3, =3.5.2, =1.0.1-MON-198407-add-selinux-sudo-check.0, =0.0.1, =1.0.3, =3.3.7, =3.0.0-alpha.2, =3.2.0-beta.0, =0.1.9, =0.0.1, =1.21.9, =1.21.9, =0.3.1, =0.5.1 - @depup/react-router-dom 7.13.1-depup...

31g-form-parser (1.0.107), @accounter/client (>=0.0.3-alpha-20241124130832-1498e8a00d2fa532e452b5ad126a753f4844a237, <=0.0.11-alpha-20260404002702-9340365def1af08a5cdbbf734a87d1d4839bdaff) +287 more potentially affected by CVE-2026-34077 via react-router (>=7.0.0, <=7.13.2-pre.0)

react-router NPM version =7.0.0, =0.0.3-alpha-20241124130832-1498e8a00d2fa532e452b5ad126a753f4844a237, =0.0.2, =3.4.0, =0.2.3, =1.1.0, =1.0.1-MON-198407-add-selinux-sudo-check.0, =0.0.1, =1.0.3, =0.1.0, =0.3.3 and more Source cves: CVE-2026-34077 Source advisory: SNYK:JS-REACTROUTER-17138883...

Allocation of Resources Without Limits or Throttling

Overview Affected versions of this package are vulnerable to Allocation of Resources Without Limits or Throttling in the serialization algorithm in the PrefetchPageLinks function. An attacker can cause a denial of service by supplying specially crafted user input that is reflected and processed...

@1023-ventures/merope2 (>=0.2.1, <=0.2.9), @1023-ventures/vega-core (>=0.5.0, <=0.6.2) +1201 more potentially affected by CVE-2026-40181 via react-router (>=6.7.0, <=6.30.3-pre-v6.0)

react-router NPM version =6.7.0, =0.2.1, =0.5.0, =0.0.1, =0.0.1, =3.0.0, =0.0.0-beta-20260120211922, =1.0.0, =1.0.0, =1.0.0, =2.7.0, =0.0.1, =0.1.0, =0.0.0, =2.13.1, =2.13.94 and more Source cves: CVE-2026-40181 Source advisory: SNYK:JS-REACTROUTER-17138887...

Open Redirect

Overview Affected versions of this package are vulnerable to Open Redirect when certain URLs with path values starting with // are processed. An attacker can redirect users to external domains by supplying specially crafted protocol-relative URLs. Note: Users that utilise Declarative Mode are not...

Open Redirect

Overview Affected versions of this package are vulnerable to Open Redirect when certain URLs with path values starting with // are processed. An attacker can redirect users to external domains by supplying specially crafted protocol-relative URLs. Note: Users that utilise Declarative Mode are not...

31g-form-parser (1.0.107), @accounter/client (>=0.0.3-alpha-20241124130832-1498e8a00d2fa532e452b5ad126a753f4844a237, <=0.0.12-alpha-20260421081155-bb6cc4c0b0b59fff41df172e2f4212eca6906193) +291 more potentially affected by CVE-2026-40181 via react-router (>=7.0.0, <=7.14.0-pre.0)

react-router NPM version =7.0.0, =0.0.3-alpha-20241124130832-1498e8a00d2fa532e452b5ad126a753f4844a237, =0.0.2, =3.4.0, =0.2.3, =1.1.0, =1.0.1-MON-198407-add-selinux-sudo-check.0, =0.0.1, =1.0.3, =1.0.8 and more Source cves: CVE-2026-40181 Source advisory: SNYK:JS-REACTROUTER-17138887...