CVE-2026-53666
unknown
CVSS v3
—
CVSS v4 NEW
—
VIR risk
—
Description
React Router: Arbitrary Constructor Injection via deserializeErrors() in React Router SSR Hydration
Predictions
Exploit likelihood
30%
Patch ETA
—
Heuristic predictions, AS-IS, for prioritization only.
Mitigations
No mitigations published for this CVE yet.
The vendor-content worker queues fetches as references arrive (check back in a few minutes). Or — if you've already worked around this in production — publish your fix to the community-verified tier.
✚ Propose a mitigation on Community → Mitigations published via the community go through AI scoring + 2 human reviewers + 7-day silent objection window before landing here withsource_tier=community-verified.
Package impact
| Ecosystem | Package | Vulnerable | Fixed |
|---|---|---|---|
| npm | react-router | >=6.4.0,<7.18.0 | 7.18.0 |
References
- https://github.com/remix-run/react-router/security/advisories/GHSA-337j-9hxr-rhxg
- https://github.com/remix-run/react-router/pull/15175
- https://github.com/remix-run/react-router/commit/9d22943fd46c8ae4b08236425fa3549e10e9ad1a
- https://github.com/remix-run/react-router
- https://github.com/remix-run/react-router/blob/main/CHANGELOG.md#v7180
- https://github.com/remix-run/react-router/releases/tag/react-router@7.18.0
Community-verified mitigations for this CVE will appear above when contributors publish them.
Verify integrity in audit chain (admin only). AS-IS.