CVE-2026-77268
CVE-2026-77268 · MCP Atlassian: Insecure File Permissions on OAuth Token Storage
Esta página presenta datos de fuentes públicas de vulnerabilidades. Consulta el aviso original antes de actualizar.
MCP Atlassian is a Model Context Protocol (MCP) server for Atlassian products (Confluence and Jira). Prior to 0.22.0, the OAuth fallback token directory and JSON file are created without explicit owner-only modes. Local users or processes with access through the resulting group or world permission bits can read access and refresh tokens and reuse the associated Atlassian session. The advisory traces the vulnerable input and processing flow through ~/.mcp-atlassian, oauth-<client_id>.json, access_token, and refresh_token, which identify the affected entry points, controls, and code paths. This issue is fixed in version 0.22.0.
CVSS 5.5 · Media · EPSS 0,2% · Corrección disponible
- Publicación
- Actualización
Pila tecnológica: python
Productos y versiones afectados
mcp-atlassian
- Versiones
- < 0.22.0: Afectada
Sin corrección publicada
mcp-atlassian PyPI
- Versiones
- 0.1.1
- 0.1.10
- 0.1.11
- 0.1.12
- 0.1.13
- 0.1.14
- 0.1.15
- 0.1.16
- 0.1.2
- 0.1.3
- 0.1.4
- 0.1.6
- 0.1.7
- 0.1.8
- 0.1.9
- 0.10.0
- 0.10.1
- 0.10.2
- 0.10.3
- 0.10.4
- 0.10.5
- 0.10.6
- 0.11.0
- 0.11.1
- 0.11.10
- 0.11.11
- 0.11.12
- 0.11.2
- 0.11.2a2
- 0.11.3
- 0.11.4
- 0.11.5
- 0.11.6
- 0.11.7
- 0.11.8
- 0.11.9
- 0.12.0
- 0.13.0
- 0.13.1
- 0.14.0
- 0.14.1
- 0.14.2
- 0.14.3
- 0.15.0
- 0.16.0
- 0.16.1
- 0.17.0
- 0.18.0
- 0.18.1
- 0.19.0
- 0.2.0
- 0.2.1
- 0.2.2
- 0.2.3
- 0.2.4
- 0.2.5
- 0.2.6
- 0.20.0
- 0.20.1
- 0.21.0
- 0.21.1
- 0.3.0
- 0.3.1
- 0.4.0
- 0.5.0
- 0.6.0
- 0.6.1
- 0.6.2
- 0.6.3
- 0.6.4
- 0.6.5
- 0.7.0
- 0.7.1
- 0.8.0
- 0.8.1
- 0.8.2
- 0.8.3
- 0.8.4
- 0.9.0
- Intervalos de versiones afectados
- ECOSYSTEM: < 0.22.0
Actualiza a 0.22.0
Fuentes originales
- https://github.com/sooperset/mcp-atlassian/security/advisories/GHSA-4596-2p6p-28cv
- https://github.com/sooperset/mcp-atlassian/pull/1448
- https://github.com/sooperset/mcp-atlassian/commit/b041733473f95119dd539542a43c280737a8e460
- https://github.com/sooperset/mcp-atlassian/releases/tag/v0.22.0
- https://nvd.nist.gov/vuln/detail/CVE-2026-77268