{"data":{"id":"eb8541d5-9b13-4d88-a93f-5c3a097acfcd","title":"GHSA-3cj3-hqcr-g934: Cline: Cross-Origin WebSocket Hijacking in Cline Hub Dashboard (`/browser` endpoint)","summary":"The Cline Hub dashboard server (`@cline/cline-hub`), launched with the `cline dashboard` CLI command, accepts WebSocket connections on `/browser` without validating the HTTP `Origin` header. When `ROOM_SECRET` is unset, which is the default for `127.0.0.1` binds, `isAuthorizedBrowserRequest()` returns `true`, so any website a developer visits can open a cross-origin WebSocket to `ws://127.0.0.1:8787/browser`. Dashboard sessions default to `autoApprove: true` for all tools, and the source reports that an injected `upsert_mcp_server` frame wrote a malicious `stdio` MCP server entry into the victim's Cline settings file.","solution":"N/A -- no mitigation discussed in source.","labels":["security"],"sourceUrl":"https://github.com/advisories/GHSA-3cj3-hqcr-g934","publishedAt":"2026-09-24T19:48:34.000Z","cveId":"CVE-2026-59723","cweIds":null,"cvssScore":null,"cvssSeverity":"high","severity":"high","attackType":["other"],"issueType":"vulnerability","affectedPackages":["cline@< 3.0.30 (fixed: 3.0.30)"],"affectedPackageNames":["cline"],"affectedPackageRefs":["npm:cline"],"affectedVendors":[],"affectedVendorsRaw":["Cline","Cline Hub","cline dashboard"],"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":0.00249,"epssCheckedAt":"2026-11-10T06:09:41.675Z","kevDateAdded":null,"advisoryAliases":["GHSA-3cj3-hqcr-g934"],"affectedPackagesSource":null,"affectedPackagesCheckedAt":null,"patchAvailable":true,"disclosureDate":"2026-09-24T19:48:34.000Z","fixReleasedAt":"2026-06-26T01:10:01.288Z","daysToFix":-90,"fixCheckedAt":"2026-10-29T21:30:09.263Z","capecIds":null,"crossRefCount":0,"attackSophistication":"trivial","impactType":["confidentiality","integrity"],"aiComponentTargeted":"agent","llmSpecific":false,"classifierConfidence":0.9,"researchCategory":null,"atlasIds":null,"fixes":[{"ecosystem":"npm","name":"cline","fixedVersion":"3.0.30","matchedVersion":"3.0.30","fixReleasedAt":"2026-06-26T01:10:01.288Z","daysToFix":-90,"match":"ecosystem","source":"registry","status":"found","checkedAt":"2026-10-29T21:30:09.118Z"}]}}