React Router has XSS Vulnerability
Published Jan 10, 2026 · Updated Nov 3, 2026
Original summary
Normalized public record · Updated Nov 3, 2026
React Router has XSS Vulnerability
Publisher and source text is retained separately from QFinch interpretation.
QFinch assessment
A XSS vulnerability exists in in React Router's `meta()`/`<Meta>` APIs in [Framework Mode](https://reactrouter.com/start/modes#framework) when generating `script:ld+json` tags which could allow arbitrary JavaScript execution during SSR if untrusted content is used to generate the tag.
Evidence: public source recordsAffected products
| Affected package, product or range | Fix status |
|---|---|
| Consult the referenced vendor advisory for affected versions. | Consult source advisory |
Matching a version is only one part of assessing exposure. QFinch has not assessed your environment on this public page.
Remediation
Apply the vendor-supported fixed release or mitigation, then verify the affected component is no longer reachable.
- Confirm the affected product and reachable code path exist in your environment.
- Apply the vendor-supported patch or mitigation from the primary advisory.
- Rescan the exact deployed revision and retain verification evidence.
Evidence coverage
- SSVC priority
- MEDIUM
- Confidence
- Not available
- Aliases
- None reported
Scores appear only when corresponding evidence exists. Missing data is never interpreted as zero risk.
Sources and record history
- Security advisory ↗
- access.redhat.com ↗
- access.redhat.com ↗
- access.redhat.com ↗
- access.redhat.com ↗
- access.redhat.com ↗
- bugzilla.redhat.com ↗
- security.access.redhat.com ↗
Record history
Published Jan 10, 2026 · Last refreshed Nov 3, 2026