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.
Meta · React Server Components
Known ransomware use: Known
Follow the source advisory and validate exposure in your environment.
Apply mitigations per vendor instructions, follow applicable BOD 22-01 guidance for cloud services, or discontinue use of the product if mitigations are unavailable.
Recent reporting that mentions CVE-2025-55182.
Hackers are running a large-scale campaign to steal credentials in an automated way after exploiting React2Shell (CVE-2025-55182) in vulnerable Next.js apps. [...]
A large-scale credential harvesting operation has been observed exploiting the React2Shell vulnerability as an initial infection vector to steal database credentials, SSH private keys, Amazon Web Services (AWS) secrets, shell command history, Stripe API keys, and GitHub tokens at scale
The RondoDox botnet has been observed exploiting the critical React2Shell flaw (CVE-2025-55182) to infect vulnerable Next.js servers with malware and cryptominers. [...]
A ransomware gang exploited the critical React2Shell vulnerability (CVE-2025-55182) to gain initial access to corporate networks and deployed the file-encrypting malware less than a minute later. [...]
2 More Vulnerabilities Need Patching in React Server Components, Warns VercelMass exploitation of the "React2Shell" - CVE-2025-55182 - vulnerability remains underway by nation-state hackers tied to China, North Korea and Iran, as well as financially motivated cybercriminals running everything from cryptomining malware to DDoS services, security experts warn.
As exploitation activity against CVE-2025-55182 ramps up, researchers are finding some proof-of-concept exploits contain bypasses for web application firewall (WAF) rules.
CVE-2025-55182 is a CVSS 10.0 pre-authentication RCE affecting React Server Components. Amid the flood of fake proof-of-concept exploits, scanners, exploits, and widespread misconceptions, this technical analysis intends to cut through the noise.
Attacks against CVE-2025-55182, which began almost immediately after public disclosure last week, have increased as more threat actors take advantage of the flaw.
React2Shell (CVE-2025-55182) is under active exploitation by Earth Lamia and Jackpot Panda, risking over two million instances worldwide
Over 77,000 Internet-exposed IP addresses are vulnerable to the critical React2Shell remote code execution flaw (CVE-2025-55182), with researchers now confirming that attackers have already compromised over 30 organizations across multiple sectors. [...]
Security community needs to rally and share more info faster, one researcher says Amid new reports of attackers pummeling a maximum security hole (CVE-2025-55182) in the React JavaScript library, Cloudflare's technology chief said his company took down its own network, forcing a widespread outage early Friday, to patch React2Shell.…
A critical RCE flaw in React.js, dubbed React2Shell (CVE-2025-55182), has been disclosed with a maximum CVSS score of 10.0, posing severe risks for server-side implementations
Multiple China-linked threat actors began exploiting the React2Shell vulnerability (CVE-2025-55182) affecting React and Next.js just hours after the max-severity issue was disclosed. [...]
CVE-2025-55182 is a critical (CVSS 10.0) pre-authentication remote code execution vulnerability affecting React Server Components used in React.js, Next.js, and related frameworks (see the context section for a more exhaustive list of affected frameworks).