CyberSecBulletin

Meta vulnerabilities

We track 7 vulnerabilities in Meta products across 4 products. 7 are rated high or critical, and 1 has been exploited in real attacks. The most recent was published on May 6, 2026.

7vulnerabilities
2critical
5high
1exploited
8.2average CVSS score

Latest Meta vulnerabilities

  • 7.5 High severity

    react-server-dom-turbopack: Uncontrolled Resource Consumption

    CVE-2026-23870MetaEPSS 1.53%

    A denial of service vulnerability could be triggered by sending specially crafted HTTP requests to server function endpoints, this could lead to server crashes, out-of-memory exceptions or excessive CPU usage; affecting the following packages: react-server-dom

  • 7.5 High severity

    react-server-dom-turbopack: Uncontrolled Resource Consumption

    CVE-2026-23869MetaEPSS 1.57%

    A denial of service vulnerability exists in React Server Components, affecting the following packages: react-server-dom-parcel, react-server-dom-turbopack and react-server-dom-webpack (versions 19.0.0 through 19.0.4, 19.1.0 through 19.1.5, and 19.2.0 through 1

  • 7.5 High severity

    react-server-dom-webpack: Uncontrolled Resource Consumption

    CVE-2026-23864MetaEPSS 2.58%

    Multiple denial of service vulnerabilities exist in React Server Components, affecting the following packages: react-server-dom-parcel, react-server-dom-turbopack, react-server-dom-webpack. The vulnerabilities are triggered by sending specially crafted HTTP re

  • 7.5 High severity

    react-server-dom-parcel: Deserialization of Untrusted Data

    CVE-2025-67779MetaEPSS 15.5%

    It was found that the fix addressing CVE-2025-55184 in React Server Components was incomplete and does not prevent a denial of service attack in a specific case. React Server Components versions 19.0.2, 19.1.3 and 19.2.2 are affected, allowing unsafe deseriali

  • 7.5 High severity

    react-server-dom-webpack: Deserialization of Untrusted Data

    CVE-2025-55184MetaEPSS 64.4%

    A pre-authentication denial of service vulnerability exists in React Server Components versions 19.0.0, 19.0.1 19.1.0, 19.1.1, 19.1.2, 19.2.0 and 19.2.1, including the following packages: react-server-dom-parcel, react-server-dom-turbopack, and react-server-do

  • 10.0 Critical severity

    Meta React Server Components Remote Code Execution Exploited

    CVE-2025-55182MetaEPSS 99.7%

    A pre-authentication remote code execution vulnerability exists in React Server Components versions 19.0.0, 19.1.0, 19.1.1, and 19.2.0 including the following packages: react-server-dom-parcel, react-server-dom-turbopack, and react-server-dom-webpack. The vuln

  • 9.8 Critical severity

    tac_plus: Improper Filtering of Special Elements

    CVE-2023-45239MetaEPSS 2.26%

    A lack of input validation exists in tac_plus prior to commit 4fdf178 which, when pre or post auth commands are enabled, allows an attacker who can control the username, rem-addr, or NAC address sent to tac_plus to inject shell commands and gain remote code ex