CVE-2026-0621
CVE-2026-0621 · MCP TypeScript SDK UriTemplate Exploded Array Pattern ReDoS
Esta página presenta datos de fuentes públicas de vulnerabilidades. Consulta el aviso original antes de actualizar.
Anthropic's MCP TypeScript SDK versions up to and including 1.25.1 contain a regular expression denial of service (ReDoS) vulnerability in the UriTemplate class when processing RFC 6570 exploded array patterns. The dynamically generated regular expression used during URI matching contains nested quantifiers that can trigger catastrophic backtracking on specially crafted inputs, resulting in excessive CPU consumption. An attacker can exploit this by supplying a malicious URI that causes the Node.js process to become unresponsive, leading to a denial of service.
CVSS 8.7 · Alta · EPSS 0,4% · Corrección disponible
- Publicación
- Actualización
Pila tecnológica: node
Productos y versiones afectados
mcp typescript sdk
- Versiones
- ≥ 0, ≤ 1.25.1: Afectada (semver)
Sin corrección publicada
@modelcontextprotocol/sdk npm
- Intervalos de versiones afectados
- SEMVER: ≥ 1.3.0, < 1.25.2
Actualiza a 1.25.2