Vulnerability library
Security checkJune 04, 2026

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

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High severitynpmturbo-stream

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Description

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.

Recommendation

Update the turbo-stream package to the latest compatible version. Followings are version details:

  • Affected version(s): < 3.0.0
  • Patched version(s): 3.0.0

References

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Related Issues

See something that needs correcting? Let us knowUpdated June 04, 2026