{"action":"Upgrade mcp-atlassian to 0.22.0 or later.","affected":[{"fixed":"0.22.0","introduced":"0"}],"component":"mcp-atlassian","cve_ids":["CVE-2026-77251"],"ecosystem":"PyPI","epss":0.00266,"exploited":false,"fixed_versions":["0.22.0"],"ghsa_id":"GHSA-w66g-j6c4-hcfc","id":"tcs_01M5KH9X257QEPF9B87ZR0SMZ8","modified_at":"2026-10-01T17:45:10.041452576Z","published_at":"2026-10-01T16:38:35.013563Z","references":["https://osv.dev/vulnerability/PYSEC-2026-4102","https://github.com/sooperset/mcp-atlassian/security/advisories/GHSA-w66g-j6c4-hcfc","https://nvd.nist.gov/vuln/detail/CVE-2026-77251","https://github.com/sooperset/mcp-atlassian/pull/1448","https://github.com/sooperset/mcp-atlassian/commit/b041733473f95119dd539542a43c280737a8e460","https://github.com/sooperset/mcp-atlassian","https://github.com/sooperset/mcp-atlassian/releases/tag/v0.22.0","https://pypi.org/project/mcp-atlassian","https://github.com/advisories/GHSA-w66g-j6c4-hcfc"],"severity":{"label":"medium","score":6.5},"sources":[{"source":"osv","source_id":"PYSEC-2026-4102","url":"https://osv.dev/vulnerability/PYSEC-2026-4102"},{"source":"nvd","source_id":"CVE-2026-77251","url":"https://nvd.nist.gov/vuln/detail/CVE-2026-77251"}],"summary":"MCP Atlassian: JIRA_PROJECTS_FILTER / CONFLUENCE_SPACES_FILTER allow forbidden-project content exfiltration (one LIVE-proven on Atlassian Cloud)"}