{"data":{"id":"303601b1-2a6a-4bcc-824f-6c7079a68c10","title":"GHSA-6vh2-wg4h-4vwj: Flowise: Unauthenticated Property Injection into Flow Execution Context via Ungated `overrideConfig` Spread in Prediction API","summary":"The unauthenticated POST /api/v1/prediction/:id endpoint in Flowise accepts an overrideConfig object and spreads it unconditionally into flowConfig (packages/server/src/utils/buildChatflow.ts) and flowData (packages/server/src/utils/index.ts) without checking apiOverrideStatus. An unauthenticated attacker can inject arbitrary properties into the execution context of any public chatflow, such as overwriting chatId to reach a victim's session or altering $flow.* template variables. This is distinct from GHSA-5cph-wvm9-45gj, which covered node input parameter overrides.","solution":"N/A -- no mitigation discussed in source.","labels":["security"],"sourceUrl":"https://github.com/advisories/GHSA-6vh2-wg4h-4vwj","publishedAt":"2026-08-04T15:56:11.000Z","cveId":"CVE-2026-69258","cweIds":null,"cvssScore":null,"cvssSeverity":"high","severity":"high","attackType":["prompt_injection","other"],"issueType":"vulnerability","affectedPackages":["flowise@<= 3.1.2 (fixed: 3.1.3)"],"affectedPackageNames":["flowise"],"affectedPackageRefs":["npm:flowise"],"affectedVendors":[],"affectedVendorsRaw":["Flowise"],"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":0.00667,"epssCheckedAt":"2026-11-04T06:10:13.536Z","kevDateAdded":null,"advisoryAliases":["GHSA-6vh2-wg4h-4vwj"],"affectedPackagesSource":null,"affectedPackagesCheckedAt":null,"patchAvailable":true,"disclosureDate":"2026-08-04T15:56:11.000Z","fixReleasedAt":"2026-06-25T10:41:14.612Z","daysToFix":-40,"fixCheckedAt":"2026-10-29T21:32:19.964Z","capecIds":null,"crossRefCount":0,"attackSophistication":"trivial","impactType":["confidentiality","integrity"],"aiComponentTargeted":"api","llmSpecific":false,"classifierConfidence":0.9,"researchCategory":null,"atlasIds":["AML.T0051"],"fixes":[{"ecosystem":"npm","name":"flowise","fixedVersion":"3.1.3","matchedVersion":"3.1.3","fixReleasedAt":"2026-06-25T10:41:14.612Z","daysToFix":-40,"match":"ecosystem","source":"tracked","status":"found","checkedAt":"2026-10-29T21:32:19.817Z"}]}}