Actively exploited
Listed in CISA’s Known Exploited Vulnerabilities catalog since December 5, 2025.
CVE-2025-55182
Meta React Server Components Remote Code Execution Vulnerability
Meta · React Server Components
Added to KEV December 5, 2025
Alert details
- Source feed
- CISA KEV
- CVE ID
- CVE-2025-55182
- Affected products
- React Server Components · Meta React Server Components · Meta
What happened
Meta React Server Components contains a remote code execution vulnerability that could allow unauthenticated remote code execution by exploiting a flaw in how React decodes payloads sent to React Server Function endpoints. Please note CVE-2025-66478 has been rejected, but it is associated with CVE-2025- 55182.
What it means for your business
Meta React Server Components is listed in CISA's Known Exploited Vulnerabilities catalog (CVE-2025-55182). Meta React Server Components contains a remote code execution vulnerability that could allow unauthenticated remote code execution by exploiting a flaw in how React decodes payloads sent to React Server Function endpoints. Please note CVE-2025-66478 has been rejected, but it is associated with CVE-2025- 55182. CISA remediation due date: 2025-12-12. If you need help checking exposure, call (864) 335-9223.
Required action
Apply mitigations per vendor instructions, follow applicable BOD 22-01 guidance for cloud services, or discontinue use of the product if mitigations are unavailable.
CISA due date: December 12, 2025
Sources
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