CVE Explorer
CVE-2026-42211
React Router is a router for React. In versions 7.0.0 through 7.14.1, when using Framework Mode, a combination of steps could potentially allow unauthorized remote code execution (RCE) through external requests. This attack requires the application code to have an existing prototype pollution vulnerability, which can then be leveraged in a 2-step attack where the second step triggers unauthorized RCE on the remote server. This does not impact applications using Declarative Mode (`<BrowserRouter>
Known exploited
Not asserted
Disputed
No
Stale source
No
Conflicts
0
Affected products and versions
1 source assertion{"product":"react-router","vendor":"remix-run","versions":[{"status":"affected","version":">= 7.0.0, < 7.14.2"}]}
- cve_program_cvelist_v5affectedurn:baitaphish:normalized-source-record:v2:e4f91876dba546fd40dfe7a9b14b8be5ec04eb06f7902d9e8e702d7f27d8c7b8 · sha256:38fa437d45827381… · /containers/cna/affected/0
Provider-owned CVSS observations
1 source assertion{"metric":{"attackComplexity":"HIGH","attackVector":"NETWORK","availabilityImpact":"HIGH","baseScore":8.1,"baseSeverity":"HIGH","confidentialityImpact":"HIGH","integrityImpact":"HIGH","privilegesRequired":"NONE","scope":"UNCHANGED","userInteraction":"NONE","vectorString":"CVSS:3.1/AV:N/AC:H/PR:N/UI:N/S:U/C:H/I:H/A:H","version":"3.1"},"metric_type":"cvssV3_1"}
- cve_program_cvelist_v5cvssurn:baitaphish:normalized-source-record:v2:e4f91876dba546fd40dfe7a9b14b8be5ec04eb06f7902d9e8e702d7f27d8c7b8 · sha256:38fa437d45827381… · /containers/cna/metrics/0/cvssV3_1
CWE assertions
1 source assertion{"cweId":"CWE-502","description":"CWE-502: Deserialization of Untrusted Data","lang":"en","type":"CWE"}
- cve_program_cvelist_v5cweurn:baitaphish:normalized-source-record:v2:e4f91876dba546fd40dfe7a9b14b8be5ec04eb06f7902d9e8e702d7f27d8c7b8 · sha256:38fa437d45827381… · /containers/cna/problemTypes/0/descriptions/0
Source references
1 source assertion{"name":"https://github.com/remix-run/react-router/security/advisories/GHSA-49rj-9fvp-4h2h","tags":["x_refsource_CONFIRM"],"url":"https://github.com/remix-run/react-router/security/advisories/GHSA-49rj-9fvp-4h2h"}
- cve_program_cvelist_v5referenceurn:baitaphish:normalized-source-record:v2:e4f91876dba546fd40dfe7a9b14b8be5ec04eb06f7902d9e8e702d7f27d8c7b8 · sha256:38fa437d45827381… · /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.