Critical RCE Vulnerability in -mdx-remote Library Affects React Servers
Severity: High (Score: 68.3)
Sources: Cybersecuritynews, Discuss.Hashicorp, Dev.To
Summary
A critical vulnerability tracked as CVE-2026-0969 was disclosed in the -mdx-remote library, allowing attackers to execute arbitrary code on servers that render untrusted MDX content. The vulnerability affects versions 4.3.0 through 5.0.0 and has been addressed in version 6.0.0, which introduces a breaking change to mitigate the risk.
Key Entities
- Remote Code Execution (attack_type)
- Zero-day Exploit (attack_type)
- CVE-2026-0969 (cve)
- T1203 - Exploitation for Client Execution (mitre_attack)
- Mdx-remote (platform)
- React (platform)
- TypeScript (platform)