{"action":"Upgrade mcp-atlassian to 0.17.0 or later.","affected":[{"fixed":"0.17.0","introduced":"0"}],"component":"mcp-atlassian","cve_ids":["CVE-2026-27826"],"ecosystem":"PyPI","epss":0.13,"exploited":false,"fixed_versions":["0.17.0"],"ghsa_id":"GHSA-7r34-79r5-rcc9","id":"tcs_01M5KF6GBGMDTKBVPZNX686FRM","modified_at":"2026-07-13T16:43:48.991534647Z","published_at":"2026-03-10T18:48:46Z","references":["https://osv.dev/vulnerability/GHSA-7r34-79r5-rcc9","https://github.com/sooperset/mcp-atlassian/security/advisories/GHSA-7r34-79r5-rcc9","https://github.com/sooperset/mcp-atlassian/commit/5cd697dfce9116ef330b8dc7a91291640e0528d9","https://github.com/sooperset/mcp-atlassian"],"severity":{"label":"high","score":8.2},"sources":[{"source":"osv","source_id":"GHSA-7r34-79r5-rcc9","url":"https://osv.dev/vulnerability/GHSA-7r34-79r5-rcc9"}],"summary":"MCP Atlassian has SSRF via unvalidated X-Atlassian-Jira-Url / X-Atlassian-Confluence-Url headers"}