Critical severity · published Sep 10, 2026
CVE-2026-52098
An issue in Flowise 3.1.2 allows a remote attacker to execute arbitrary code via the /api/v1/prediction/<flowId> endpoint
9.8
CVSS
1.1%
EPSS
No
On KEV
CVSS vector
CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H
Attack vector
Network
Complexity
Low
Privileges
None
User interaction
None
Confidentiality
High
Integrity
High
Availability
High
Scope
Unchanged
Exploitation
Is it being used?
Exploit prediction (EPSS)1.1% · higher than 66% of CVEs
Exploited in the wildNo evidence yet
CISA KEVNot listed
Ransomware campaign useNot known
Affected products
Which versions
FL
Flowise · Flowiseai
3.1.2 · source: NVD
References
NVD
https://nvd.nist.gov/vuln/detail/CVE-2026-52098
CVE.org
https://www.cve.org/CVERecord?id=CVE-2026-52098
Product
https://github.com/FlowiseAI/Flowise
Product
https://github.com/FlowiseAI/Flowise/blob/main/packages/server/src/utils/constants.ts
Product
https://github.com/FlowiseAI/Flowise/blob/main/packages/server/src/utils/validateKey.ts
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