CVE-2026-90533

6.0 mediumEPSS 0.3%

Medium (6.0) in flowiseai flowise. EPSS 0.3% chance of exploitation in the next 30 days.

Flowise before 3.1.4 contains a broken access control vulnerability in GET /api/v1/organizationuser that allows any authenticated organization member to retrieve the organization owner's full user record including bcrypt password hash and temporary tokens. Attackers can query the endpoint with any user ID to obtain the owner's credential hash for offline cracking, enabling account takeover of the highest-privileged account.

Severity

CVSS 4.0

6.0 medium

CVSS:4.0/AV:N/AC:H/AT:N/PR:L/UI:N/VC:H/VI:N/VA:N/SC:N/SI:N/SA:N

CVSS 3.1

6.5 medium

CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:U/C:H/I:N/A:N

EPSS: 0.3% chance of exploitation in the next 30 days; higher than 26% of CVEs (scores of 2026-10-31)
CWE: CWE-862
Published: 2026-09-12
Modified: 2026-09-15
Record from: the NVD, synced 2026-10-19

Affected

flowiseai:flowise

References

https://github.com/FlowiseAI/Flowise/security/advisories/GHSA-fhxm-xxcx-g6x3
https://www.vulncheck.com/advisories/flowise-before-3.1.4-broken-access-control-via-organizationuser
https://github.com/FlowiseAI/Flowise/security/advisories/GHSA-fhxm-xxcx-g6x3

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