CVE-2026-77246
CVE-2026-77246 · MCP Atlassian: MCP HTTP Client Server-Local File Exfiltration via Unvalidated Attachment Upload Path
Cette page présente des faits issus de sources publiques. Consultez l’avis original avant toute mise à jour.
MCP Atlassian is a Model Context Protocol (MCP) server for Atlassian products (Confluence and Jira). Prior to 0.22.0, an HTTP transport deployment with READ_ONLY_MODE=false accepts a request without an Authorization identity and permits attacker-controlled Atlassian service headers, including X-Atlassian-Confluence-Url, to select a public attacker hostname or one allowed by MCP_ALLOWED_URL_DOMAINS. A caller can then invoke confluence_upload_attachment or the Jira attachment variant in src/mcp_atlassian/jira/attachments.py with a server-local file_path and cause the MCP process to send the file to the selected attachment endpoint. This issue is fixed in version 0.22.0.
CVSS 7.4 · Élevée · EPSS 0,5% · Correctif disponible
- Publication
- Mise à jour
Pile logicielle: python
Produits et versions concernés
mcp-atlassian
- Versions du logiciel
- < 0.22.0: Concernée
Aucun correctif publié
mcp-atlassian PyPI
- Versions du logiciel
- 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
- Plages de versions concernées
- ECOSYSTEM: < 0.22.0
Mettez à jour vers 0.22.0
Sources originales
- https://github.com/sooperset/mcp-atlassian/security/advisories/GHSA-wv8v-v4c5-v75j
- 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-2026-77246