CVE-2026-69258
criticalFlowise is a drag & drop user interface to build a customized large language model flow.
Vendor / product: Flowiseai — flowise
Flowise is a drag & drop user interface to build a customized large language model flow. Prior to 3.1.3, the unauthenticated POST /api/v1/prediction/:id endpoint accepted an overrideConfig object and unconditionally spread it into internal flowConfig and flowData objects in packages/server/src/utils/buildChatflow.ts and packages/server/src/utils/index.ts without checking apiOverrideStatus. This allowed unauthenticated attackers to inject arbitrary properties into the flow execution context of any public chatflow, overwrite values such as chatId, sessionId, and chatHistory, and control values resolved through $flow.* template variables consumed by flow nodes. This issue is fixed in version 3.1.3.
CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:N Affected products
Weakness classification (CWE)
Source: NVD / CISA. “NVD-CWE-Other” and “NVD-CWE-noinfo” mean NVD could not assign a specific weakness.
Mitigation & advisories
References
- https://github.com/FlowiseAI/Flowise/commit/23b997ee5ef9e269b628bad0f56f1ecb86bd2fca security-advisories@github.com
- https://github.com/FlowiseAI/Flowise/pull/6279 security-advisories@github.com
- https://github.com/FlowiseAI/Flowise/releases/tag/flowise@3.1.3 security-advisories@github.com
- https://github.com/FlowiseAI/Flowise/security/advisories/GHSA-6vh2-wg4h-4vwj security-advisories@github.com
- https://github.com/FlowiseAI/Flowise/security/advisories/GHSA-6vh2-wg4h-4vwj 134c704f-9b21-4f2e-91b3-4a467353bcc0