GHSA-rxv8-25v2-qmq8
Suggest an improvement- Source
- https://github.com/advisories/GHSA-rxv8-25v2-qmq8
- Import Source
- https://github.com/github/advisory-database/blob/main/advisories/github-reviewed/2026/06/GHSA-rxv8-25v2-qmq8/GHSA-rxv8-25v2-qmq8.json
- JSON Data
- https://api.osv.dev/v1/vulns/GHSA-rxv8-25v2-qmq8
- Aliases
- Downstream
- Published
- 2026-06-04T15:23:51Z
- Modified
- 2026-06-04T15:30:16.227727144Z
- Severity
-
- 7.5 (High) CVSS_V3 - CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H CVSS Calculator
- Summary
- React Router vulnerable to Denial of Service via reflected user input in single-fetch
- Details
-
A DoS vulnerability exists in the React Router v7 Framework Mode, as well as Remix v2.9.0+ with Single Fetch enabled. In some scenarios the underlying serialization algorithm can become a bottleneck when encoding specific types of data into server responses. Please upgrade to React Router v7.14.0 or later.
[!NOTE] This does not impact your React Router application if you are using Declarative Mode (
<BrowserRouter>) or Data Mode (createBrowserRouter/<RouterProvider>). - Database specific
{ "nvd_published_at": "2026-06-02T20:16:34Z", "severity": "HIGH", "cwe_ids": [ "CWE-770" ], "github_reviewed": true, "github_reviewed_at": "2026-06-04T15:23:51Z" }- References
-
- https://github.com/remix-run/react-router/security/advisories/GHSA-rxv8-25v2-qmq8
- https://nvd.nist.gov/vuln/detail/CVE-2026-34077
- https://github.com/remix-run/react-router/commit/59811921d3c7d599077b8cadccdcd65a233165e0
- https://github.com/jacob-ebey/turbo-stream/blob/v2.4.1/src/flatten.ts#L175-L177
- https://github.com/jacob-ebey/turbo-stream/blob/v2.4.1/src/unflatten.ts#L185-L189
- https://github.com/remix-run/react-router
Affected packages
npm / react-router
Package
- Name
- react-router
- View open source insights on deps.dev
- Purl
- pkg:npm/react-router
npm / turbo-stream
Package
- Name
- turbo-stream
- View open source insights on deps.dev
- Purl
- pkg:npm/turbo-stream