{"data":{"id":"043ce68f-e22a-4e71-b042-0dadc7875c3b","title":"GHSA-p6hp-93wp-fh6p: MCP Atlassian: Path Traversal / Arbitrary File Read in confluence_upload_attachment MCP tool (incomplete fix of GHSA-xjgw-4wvw-rgm4)","summary":"The mcp-atlassian server's confluence_upload_attachment MCP tool passes its file_path argument straight to open(file_path, \"rb\") with no path validation, so a caller can read arbitrary files the server process can read and upload them to an attacker-controlled Confluence host. With the default streamable-http transport binding 0.0.0.0 without authentication, this is remotely exploitable without credentials. It is the read-side counterpart of GHSA-xjgw-4wvw-rgm4 / CVE-2026-27825, whose fix in v0.17.0 covered only the download path.","solution":"N/A -- no mitigation discussed in source.","labels":["security"],"sourceUrl":"https://github.com/advisories/GHSA-p6hp-93wp-fh6p","publishedAt":"2026-09-22T20:35:21.000Z","cveId":"CVE-2026-77262","cweIds":null,"cvssScore":null,"cvssSeverity":"high","severity":"high","attackType":["other"],"issueType":"vulnerability","affectedPackages":["mcp-atlassian@< 0.22.0 (fixed: 0.22.0)"],"affectedPackageNames":["mcp-atlassian"],"affectedPackageRefs":["pypi:mcp-atlassian"],"affectedVendors":[],"affectedVendorsRaw":["mcp-atlassian","MCP (Model Context Protocol)","Confluence"],"classifierModel":"claude-haiku-5-5","classifierPromptVersion":"v4","summaryPromptVersion":"v2","headline":null,"headlinePromptVersion":null,"cvssVector":null,"attackVector":null,"attackComplexity":null,"privilegesRequired":null,"userInteraction":null,"exploitMaturity":"unknown","epssScore":0.00557,"epssCheckedAt":"2026-11-10T00:11:22.478Z","kevDateAdded":null,"advisoryAliases":["GHSA-p6hp-93wp-fh6p"],"affectedPackagesSource":null,"affectedPackagesCheckedAt":null,"patchAvailable":true,"disclosureDate":"2026-09-22T20:35:21.000Z","fixReleasedAt":"2026-07-10T13:40:13.653Z","daysToFix":-74,"fixCheckedAt":"2026-10-29T21:30:18.843Z","capecIds":null,"crossRefCount":0,"attackSophistication":"trivial","impactType":["confidentiality"],"aiComponentTargeted":"plugin","llmSpecific":false,"classifierConfidence":0.85,"researchCategory":null,"atlasIds":null,"fixes":[{"ecosystem":"pypi","name":"mcp-atlassian","fixedVersion":"0.22.0","matchedVersion":"0.22.0","fixReleasedAt":"2026-07-10T13:40:13.653Z","daysToFix":-74,"match":"ecosystem","source":"registry","status":"found","checkedAt":"2026-10-29T21:30:18.697Z"}]}}