React vulnerabilities: known CVEs & security history
Meta · Web / Runtime · 6 tracked CVEs · 1 actively exploited · updated June 2026 · what is a CVE? →
This is the full list of known vulnerabilities (CVEs) across all React release lines — 6 in total, with 1 actively exploited in the wild. A CVE here doesn't mean your version is affected — check React's current status and the safe version to run.
Known React CVEs
Actively-exploited and most-severe first. Open any CVE for full details.
| CVE | Severity | CVSS | EPSS | Year |
|---|---|---|---|---|
| CVE-2025-55182⚡ exploited | critical | 10 | 100% | 2025 |
| CVE-2026-23864 | high | 7.5 | 1% | 2026 |
| CVE-2025-67779 | high | 7.5 | 19% | 2025 |
| CVE-2025-55184 | high | 7.5 | 66% | 2025 |
| CVE-2018-6341 | medium | 6.1 | 3% | 2018 |
| CVE-2025-55183 | medium | 5.3 | 62% | 2025 |
Is my React version affected?
The list above spans every release. To know whether your version is affected — and the minimum safe version to upgrade to — check it directly.
Check your React version → · Monitor React for new CVEs →
React vulnerabilities — frequently asked
How many known vulnerabilities does React have?
IsItPatched tracks 6 CVEs for React, 1 of which is actively exploited (CISA KEV). 1 is critical-severity and 3 high-severity. These span every release line — what matters is whether the version you run is affected.
Does React have any actively-exploited vulnerabilities?
Yes — 1 React CVE is in CISA's Known Exploited Vulnerabilities catalog, meaning it is confirmed exploited in the wild (1 linked to ransomware). Patch it as a priority.
What is the most severe React vulnerability?
Among tracked issues, CVE-2025-55182 (CRITICAL, CVSS 10), which is actively exploited, ranks highest — a Insecure deserialization weakness.
Is React safe to use?
It depends on the version. The latest supported React release (19.2.7) clears the known issues; older versions may still be affected. Check the exact version you run for a verdict.
CVE data aggregated from NVD, CISA KEV and EPSS (FIRST.org). Related: React security status · React end-of-life · actively-exploited CVEs. Always verify against Meta's advisories — see our disclaimer.