CVE-2026-77271highCWE-22CWE-94

CVE-2026-77271: falha de alta gravidade em sooperset mcp-atlassian

MCP Atlassian: Incomplete path traversal fix allows intra-CWD module overwrite and RCE (bypass of CVE-2026-27825)

Publicada em · Atualizada em

Seguir esta CVE+ Monitorar mcp-atlassian+ Monitorar mcp-atlassian

Aviso por e-mail quando ela entrar no KEV, ganhar PoC pública ou subir de nota.

21Vexday Risk Score

Sem sinal de exploração. Nenhum artefato público de exploração conhecido até agora.

ssvc Trackcvss 8.3epss 0.6%
MCP Atlassian is a Model Context Protocol (MCP) server for Atlassian products (Confluence and Jira). Prior to 0.22.0, validate_safe_path defaults its base directory to os.getcwd(), and affected Confluence attachment call sites omit base_dir, allowing attacker-selected writes within the working directory. This Python module overwrite can provide code execution when the application later imports the modified module, bypassing the remediation tracked as CVE-2026-27825. This issue is fixed in version 0.22.0.
CVSS:4.0/AV:N/AC:L/AT:N/PR:L/UI:N/VC:H/VI:N/VA:N/SC:H/SI:N/SA:N
Produtos afetados
sooperset · mcp-atlassian
CVEs relacionadas — sooperset mcp-atlassian

No mesmo produto, das mais perigosas para as menos.

CVE-2026-27826HIGHMCP Atlassian has SSRF via unvalidated X-Atlassian-Jira-Url / X-Atlassian-Confluence-Url headersEPSS 13.9%CVE-2026-27825CRITICALMCP Atlassian has an arbitrary file write leading to arbitrary code execution via unconstrained download_path in confluence_download_attachmentEPSS 12.3%CVE-2026-77254CRITICALMCP Atlassian: Unauthenticated HTTP MCP requests can use globally configured Jira and Confluence credentialsEPSS 0.6%CVE-2026-77262HIGHMCP Atlassian: Path Traversal / Arbitrary File Read in confluence_upload_attachment MCP tool (incomplete fix of CVE-2026-27825)EPSS 0.6%CVE-2026-77243HIGHMCP Atlassian: ENABLED_TOOLS / Toolset authorization bypassEPSS 0.5%CVE-2026-124503MEDIUMsooperset mcp-atlassian io.py validate_safe_path path traversalEPSS 0.5%