CVE-2026-56278
9.3
CVSS:4.0/AV:N/AC:L/AT:N/PR:N/UI:N/VC:H/VI:H/VA:N/SC:N/SI:N/SA:N
Summary
Flowise before 3.1.0 (affected versions 3.0.13 and earlier) uses a weak hardcoded default secret ('flowise') for the express-session middleware when the EXPRESS_SESSION_SECRET environment variable is not set (packages/server/src/enterprise/middleware/passport/index.ts). Because this default secret is publicly visible in the source code, an attacker can forge valid signed session cookies to impersonate any user and bypass authentication.
Affected Software
| Vendor | Product | Version Range | Status |
|---|---|---|---|
| Flowise | Flowise | 0 < 3.1.0 | affected |
| Flowise | Flowise | 3.1.0 | unaffected |
Weaknesses
- CWE-798: Use of Hard-coded Credentials
ADP Enrichment
CISA ADP Vulnrichment
- SSVC:
- Exploitation: none
- Automatable: yes
- Technical Impact: total
References
- https://github.com/FlowiseAI/Flowise/security/advisories/GHSA-2qqc-p94c-hxwh
- https://www.vulncheck.com/advisories/flowise-session-hijacking-via-weak-default-express-session-secret
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