CVE-2026-33245
Client-side XSS in React Router unstable RSC redirects (7.7.0–7.13.1); fixed in 7.13.2.
Is CVE-2026-33245 being exploited?
Not confirmed. CVE-2026-33245 does not appear in CISA's Known Exploited Vulnerabilities catalog, which records only exploitation that has been observed and reported publicly. That is evidence of absence of a report, not evidence the flaw is unattacked. EPSS currently estimates a 0.19% probability of exploitation in the next 30 days.
How severe is CVE-2026-33245?
CVE-2026-33245 is rated High with a CVSS score of 8.0. Severity describes how bad exploitation would be, not how likely it is: pair it with exploitation evidence before deciding what to patch first.
Is there a patch for CVE-2026-33245?
Yes. A fix has been recorded for CVE-2026-33245. The vendor advisory is the authority on the exact fixed version — apply it from there rather than from a summary.
What does CVE-2026-33245 affect?
CVE-2026-33245 affects React Router (unstable RSC redirects) 7.7.0–7.13.1. Confirm the exact affected versions against the vendor advisory before deciding you are exposed.
What should I do about CVE-2026-33245?
Upgrade to 7.13.2+ to fix the vulnerability
Exploitation status reflects CISA's KEV catalog as we last synced it. Check the catalog directly.
XSS via redirects from untrusted sources can execute scripts in victims' browsers.
Patch when possible
- affected>= 7.7.0 and < 7.13.2
As published in the CVE Program record. A version outside these ranges is not a statement that it is unaffected — vendors sometimes understate a range, and distribution-backported builds carry upstream numbers that do not reflect what was patched into them.