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CVE-2026-42342

React Router is a router for React. In versions 7.0.0 through 7.14.x of react-router and versions 2.10.0 through 2.17.4 of @remix-run/server-runtime, certain crafted requests can consume disproportionate server resources via unbounded path expansion in the __manifest endpoint, resulting in response time degradation and/or service unavailability for end users. This affects React Router Framework Mode applications as well as Remix applications. This does not impact applications using Declarative M
Lifecycle PUBLISHED1 preserved revisionFact urn:baitaphish:canonical-cve-fact-revision:v2:666322144e4057bc6384432fbf7e8958d02ff26160d7eb98b7aebcea647d1dff
Known exploited
Not asserted
Disputed
No
Stale source
No
Conflicts
1

Preserved source conflicts

No provider value was silently selected as the winner.

affected · 2 assertions

{"product":"react-router","vendor":"remix-run","versions":[{"status":"affected","version":">= 7.0.0, < 7.15.0"}]}

  • cve_program_cvelist_v5affected
    urn:baitaphish:normalized-source-record:v2:d4cad2a52c40dc9ed3f53b3aa8dd37c8e5e28886709672a2736714b92c2052f2 · sha256:ff9bc7482ac36eee… · /containers/cna/affected/0

{"product":"@remix-run/server-runtime","vendor":"remix-run","versions":[{"status":"affected","version":">= 2.10.0, < 2.17.5"}]}

  • cve_program_cvelist_v5affected
    urn:baitaphish:normalized-source-record:v2:d4cad2a52c40dc9ed3f53b3aa8dd37c8e5e28886709672a2736714b92c2052f2 · sha256:ff9bc7482ac36eee… · /containers/cna/affected/1

Affected products and versions

2 source assertions
{"product":"react-router","vendor":"remix-run","versions":[{"status":"affected","version":">= 7.0.0, < 7.15.0"}]}
  • cve_program_cvelist_v5affected
    urn:baitaphish:normalized-source-record:v2:d4cad2a52c40dc9ed3f53b3aa8dd37c8e5e28886709672a2736714b92c2052f2 · sha256:ff9bc7482ac36eee… · /containers/cna/affected/0
{"product":"@remix-run/server-runtime","vendor":"remix-run","versions":[{"status":"affected","version":">= 2.10.0, < 2.17.5"}]}
  • cve_program_cvelist_v5affected
    urn:baitaphish:normalized-source-record:v2:d4cad2a52c40dc9ed3f53b3aa8dd37c8e5e28886709672a2736714b92c2052f2 · sha256:ff9bc7482ac36eee… · /containers/cna/affected/1

Provider-owned CVSS observations

1 source assertion
{"metric":{"attackComplexity":"LOW","attackVector":"NETWORK","availabilityImpact":"HIGH","baseScore":7.5,"baseSeverity":"HIGH","confidentialityImpact":"NONE","integrityImpact":"NONE","privilegesRequired":"NONE","scope":"UNCHANGED","userInteraction":"NONE","vectorString":"CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H","version":"3.1"},"metric_type":"cvssV3_1"}
  • cve_program_cvelist_v5cvss
    urn:baitaphish:normalized-source-record:v2:d4cad2a52c40dc9ed3f53b3aa8dd37c8e5e28886709672a2736714b92c2052f2 · sha256:ff9bc7482ac36eee… · /containers/cna/metrics/0/cvssV3_1

CWE assertions

1 source assertion
{"cweId":"CWE-400","description":"CWE-400: Uncontrolled Resource Consumption","lang":"en","type":"CWE"}
  • cve_program_cvelist_v5cwe
    urn:baitaphish:normalized-source-record:v2:d4cad2a52c40dc9ed3f53b3aa8dd37c8e5e28886709672a2736714b92c2052f2 · sha256:ff9bc7482ac36eee… · /containers/cna/problemTypes/0/descriptions/0

Source references

1 source assertion
{"name":"https://github.com/remix-run/react-router/security/advisories/GHSA-8x6r-g9mw-2r78","tags":["x_refsource_CONFIRM"],"url":"https://github.com/remix-run/react-router/security/advisories/GHSA-8x6r-g9mw-2r78"}
  • cve_program_cvelist_v5reference
    urn:baitaphish:normalized-source-record:v2:d4cad2a52c40dc9ed3f53b3aa8dd37c8e5e28886709672a2736714b92c2052f2 · sha256:ff9bc7482ac36eee… · /containers/cna/references/0

Attribution and limitations

  • CVE Program CVEList V5: Reproduce the MITRE copyright designation and CVE license in copies. Source →

Provider severity values are preserved separately. Baitaphish does not convert them into a risk rating, infer affected products, or treat EPSS as observed exploitation.

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