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CVE-2026-55685

React Router is a router for React. In versions 7.0.0 through 7.17.0, the manifest endpoint could be accessed via unauthenticated targeted requests that would put heavy load on the server and slow down response times. This issue is a follow up to CVE-2026-42342, and does not does not impact React Router applications using Declarative Mode (<BrowserRouter>) or Data Mode (createBrowserRouter/<RouterProvider>). This issue has been fixed in version 7.18.0.
Lifecycle PUBLISHED1 preserved revisionFact urn:baitaphish:canonical-cve-fact-revision:v2:b57018c923674779df2a7ea5ae0f9f087414152770d319145eb7da1ebff34455
Known exploited
Not asserted
Disputed
No
Stale source
No
Conflicts
1

Preserved source conflicts

No provider value was silently selected as the winner.

cwe · 2 assertions

{"cweId":"CWE-407","description":"CWE-407: Inefficient Algorithmic Complexity","lang":"en","type":"CWE"}

  • cve_program_cvelist_v5cwe
    urn:baitaphish:normalized-source-record:v2:57eb40fe285c097a786b33a6db9d2d87716c10c48c704d2dca2dbe8572b05fae · sha256:70c58c839bb67e43… · /containers/cna/problemTypes/1/descriptions/0

{"cweId":"CWE-400","description":"CWE-400: Uncontrolled Resource Consumption","lang":"en","type":"CWE"}

  • cve_program_cvelist_v5cwe
    urn:baitaphish:normalized-source-record:v2:57eb40fe285c097a786b33a6db9d2d87716c10c48c704d2dca2dbe8572b05fae · sha256:70c58c839bb67e43… · /containers/cna/problemTypes/0/descriptions/0

Affected products and versions

1 source assertion
{"product":"react-router","vendor":"remix-run","versions":[{"status":"affected","version":">= 7.0.0, < 7.18.0"}]}
  • cve_program_cvelist_v5affected
    urn:baitaphish:normalized-source-record:v2:57eb40fe285c097a786b33a6db9d2d87716c10c48c704d2dca2dbe8572b05fae · sha256:70c58c839bb67e43… · /containers/cna/affected/0

Provider-owned CVSS observations

1 source assertion
{"metric":{"attackComplexity":"LOW","attackRequirements":"NONE","attackVector":"NETWORK","baseScore":8.7,"baseSeverity":"HIGH","privilegesRequired":"NONE","subAvailabilityImpact":"NONE","subConfidentialityImpact":"NONE","subIntegrityImpact":"NONE","userInteraction":"NONE","vectorString":"CVSS:4.0/AV:N/AC:L/AT:N/PR:N/UI:N/VC:N/VI:N/VA:H/SC:N/SI:N/SA:N","version":"4.0","vulnAvailabilityImpact":"HIGH","vulnConfidentialityImpact":"NONE","vulnIntegrityImpact":"NONE"},"metric_type":"cvssV4_0"}
  • cve_program_cvelist_v5cvss
    urn:baitaphish:normalized-source-record:v2:57eb40fe285c097a786b33a6db9d2d87716c10c48c704d2dca2dbe8572b05fae · sha256:70c58c839bb67e43… · /containers/cna/metrics/0/cvssV4_0

CWE assertions

2 source assertions
{"cweId":"CWE-407","description":"CWE-407: Inefficient Algorithmic Complexity","lang":"en","type":"CWE"}
  • cve_program_cvelist_v5cwe
    urn:baitaphish:normalized-source-record:v2:57eb40fe285c097a786b33a6db9d2d87716c10c48c704d2dca2dbe8572b05fae · sha256:70c58c839bb67e43… · /containers/cna/problemTypes/1/descriptions/0
{"cweId":"CWE-400","description":"CWE-400: Uncontrolled Resource Consumption","lang":"en","type":"CWE"}
  • cve_program_cvelist_v5cwe
    urn:baitaphish:normalized-source-record:v2:57eb40fe285c097a786b33a6db9d2d87716c10c48c704d2dca2dbe8572b05fae · sha256:70c58c839bb67e43… · /containers/cna/problemTypes/0/descriptions/0

Source references

6 source assertions
{"name":"https://github.com/remix-run/react-router/blob/main/CHANGELOG.md#v7180","tags":["x_refsource_MISC"],"url":"https://github.com/remix-run/react-router/blob/main/CHANGELOG.md#v7180"}
  • cve_program_cvelist_v5reference
    urn:baitaphish:normalized-source-record:v2:57eb40fe285c097a786b33a6db9d2d87716c10c48c704d2dca2dbe8572b05fae · sha256:70c58c839bb67e43… · /containers/cna/references/4
{"name":"https://github.com/remix-run/react-router/commit/09e6020d1950e54f361f7ad00938ecd4dde60929","tags":["x_refsource_MISC"],"url":"https://github.com/remix-run/react-router/commit/09e6020d1950e54f361f7ad00938ecd4dde60929"}
  • cve_program_cvelist_v5reference
    urn:baitaphish:normalized-source-record:v2:57eb40fe285c097a786b33a6db9d2d87716c10c48c704d2dca2dbe8572b05fae · sha256:70c58c839bb67e43… · /containers/cna/references/3
{"name":"https://github.com/remix-run/react-router/pull/15186","tags":["x_refsource_MISC"],"url":"https://github.com/remix-run/react-router/pull/15186"}
  • cve_program_cvelist_v5reference
    urn:baitaphish:normalized-source-record:v2:57eb40fe285c097a786b33a6db9d2d87716c10c48c704d2dca2dbe8572b05fae · sha256:70c58c839bb67e43… · /containers/cna/references/2
{"name":"https://github.com/remix-run/react-router/releases/tag/react-router@7.18.0","tags":["x_refsource_MISC"],"url":"https://github.com/remix-run/react-router/releases/tag/react-router@7.18.0"}
  • cve_program_cvelist_v5reference
    urn:baitaphish:normalized-source-record:v2:57eb40fe285c097a786b33a6db9d2d87716c10c48c704d2dca2dbe8572b05fae · sha256:70c58c839bb67e43… · /containers/cna/references/5
{"name":"https://github.com/remix-run/react-router/security/advisories/GHSA-8x6r-g9mw-2r78","tags":["x_refsource_MISC"],"url":"https://github.com/remix-run/react-router/security/advisories/GHSA-8x6r-g9mw-2r78"}
  • cve_program_cvelist_v5reference
    urn:baitaphish:normalized-source-record:v2:57eb40fe285c097a786b33a6db9d2d87716c10c48c704d2dca2dbe8572b05fae · sha256:70c58c839bb67e43… · /containers/cna/references/1
{"name":"https://github.com/remix-run/react-router/security/advisories/GHSA-chx6-hx7r-mcp5","tags":["x_refsource_CONFIRM"],"url":"https://github.com/remix-run/react-router/security/advisories/GHSA-chx6-hx7r-mcp5"}
  • cve_program_cvelist_v5reference
    urn:baitaphish:normalized-source-record:v2:57eb40fe285c097a786b33a6db9d2d87716c10c48c704d2dca2dbe8572b05fae · sha256:70c58c839bb67e43… · /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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