CVE-2026-53667
Low
No strong exploitation signal.
CVSS base
6.9
MEDIUM
CVSS:3.1/AV:N/AC:H/PR:N/UI:R/S:C/C:H/I:L/A:N
EPSS — probability of exploitation (30 days)
0.4%
26.6th percentile
CISA KEV
Not listed
Weakness / dates
CWE-79
Published 2026-07-27 · modified 2026-08-03
CVSS breakdown
CVSS:3.1/AV:N/AC:H/PR:N/UI:R/S:C/C:H/I:L/A:N
| Attack Vector | N | Network |
| Attack Complexity | H | High |
| Privileges Required | N | None |
| User Interaction | R | Required |
| Scope | C | Changed |
| Confidentiality | H | High |
| Integrity | L | Low |
| Availability | N | None |
Timeline
- 2026-07-27 — Published (NVD)
- 2026-08-03 — Last modified (NVD)
Description
React Router is a router for React. In versions 7.11.0 through 7.17.0, the RSCErrorHandler is missing protocol validation, allowing for redirects from untrusted sources. This issue is a follow up to CVE-2026-53667, and only affects consuming applications if they are using the unstable RSC APIs. This issue has been fixed in version 7.18.0.
Affected
References
- https://github.com/remix-run/react-router/blob/main/CHANGELOG.md#v7180
- https://github.com/remix-run/react-router/commit/ce596e823f0d7b883a433af1d5a839a8b9fe0242
- https://github.com/remix-run/react-router/pull/15177
- https://github.com/remix-run/react-router/releases/tag/react-router@7.18.0
- https://github.com/remix-run/react-router/security/advisories/GHSA-h8fp-f39c-q6mh