CVE-2026-77254
Gravedad CVSS v3.1:
CRÍTICA
Tipo:
CWE-306
Ausencia de autenticación para una función crítica
Fecha de publicación:
22/09/2026
Última modificación:
28/09/2026
Descripción
*** Pendiente de traducción *** MCP Atlassian is a Model Context Protocol (MCP) server for Atlassian products (Confluence and Jira). Prior to 0.22.0, requests to the HTTP MCP endpoint without a per-user identity are allowed to reach tool handlers, which then use globally configured Jira or Confluence credentials. A network caller can perform operations with the operator account's permissions unless the deployment has an independent authentication boundary. The advisory traces the vulnerable input and processing flow through streamable-http, UserTokenMiddleware, _get_fetcher, and global credentials, which identify the affected entry points, controls, and code paths. This issue is fixed in version 0.22.0.
Impacto
Puntuación base 3.x
9.10
Gravedad 3.x
CRÍTICA
Productos y versiones vulnerables
| CPE | Desde | Hasta |
|---|---|---|
| cpe:2.3:a:mcp-atlassian:mcp_atlassian:*:*:*:*:*:*:*:* | 0.22.0 (excluyendo) |
Para consultar la lista completa de nombres de CPE con productos y versiones, ver esta página
Referencias a soluciones, herramientas e información
- https://github.com/sooperset/mcp-atlassian/commit/b041733473f95119dd539542a43c280737a8e460
- https://github.com/sooperset/mcp-atlassian/pull/1448
- https://github.com/sooperset/mcp-atlassian/releases/tag/v0.22.0
- https://github.com/sooperset/mcp-atlassian/security/advisories/GHSA-vc8m-84rp-53hx
- https://github.com/sooperset/mcp-atlassian/security/advisories/GHSA-vc8m-84rp-53hx


