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Vulnerabilities

Vulnerability · CVE-2025-59434

Flowise is a drag & drop user interface to build a customized large language model flow.

Published Sep 22, 2025 · catalog updated Sep 22, 2025 · FlowiseAI Flowise

Last checked Oct 26, 2026. A connected source was read within the last 7 days.

Check if you run it

No confirmed exploitation is on record for CVE-2025-59434. EPSS is 3.65%. Act only if a listed version of FlowiseAI Flowise is installed.

Gaps on this record

  • No vendor fix or required action is stored. Compare the linked advisory before you change production.

Same product and reporting

Severity
Critical9.6
Known exploitation
Not in CISA/VulnCheck KEV
EPSS
3.65%
Remediation
Version ranges on file
Affected products
vendor FlowiseAI Flowise < cloud-hosted (as of Aug 2025)

Flowise is a drag & drop user interface to build a customized large language model flow. Prior to August 2025 Cloud-Hosted Flowise, an authenticated vulnerability in Flowise Cloud allows any user on the free tier to access sensitive environment variables from other tenants via the Custom JavaScript Function node. This includes secrets such as OpenAI API keys, AWS credentials, Supabase tokens, and Google Cloud secrets — resulting in a full cross-tenant data exposure. This issue has been patched in the August 2025 Cloud-Hosted Flowise.

Are you affected?

Enter the version you run. The result uses only the ranges stored on this record.

The check returns affected, not affected, or incomplete. It does not guess a version that is missing from the record.

  • vendor FlowiseAI Flowise < cloud-hosted (as of Aug 2025)< cloud-hosted (as of Aug 2025)

How to fix CVE-2025-59434

What to do

Three questions, each answered from this record only. Confirm the vendor advisory before you patch.

Should you patch?

No confirmed exploitation is on record for CVE-2025-59434. EPSS is 3.65%. Act only if a listed version of FlowiseAI Flowise is installed.

Which versions are affected?

Compare what you have installed with FlowiseAI Flowise < cloud-hosted (as of Aug 2025) < cloud-hosted (as of Aug 2025). Compare the installed version with the linked vendor advisory before you change production.

What should an analyst verify?

No weakness class is stored. EPSS 3.65%. There is no CISA KEV listing. No Exploit-DB or Metasploit reference is linked. Use the source links for the original advisory.

Code

The project this record applies to. Exploit listings stay in References.

Timeline

Detection, updates, and resolution for this record.

  1. Sep 22, 2025 · EUVD

    Detected

    Flowise is a drag & drop user interface to build a customized large language model flow. Prior to August 2025 Cloud-Hosted Flowise, an authenticated vulnerability in Flowise Cloud allows any user on the free tier to access sensitive environment variables from other tenants via the Custom JavaScript Function node. This includes secrets such as OpenAI API keys, AWS credentials, Supabase tokens, and

  2. Sep 22, 2025 · EUVD

    Updated

    Flowise is a drag & drop user interface to build a customized large language model flow. Prior to August 2025 Cloud-Hosted Flowise, an authenticated vulnerability in Flowise Cloud allows any user on the free tier to access sensitive environment variables from other tenants via the Custom JavaScript Function node. This includes secrets such as OpenAI API keys, AWS credentials, Supabase tokens, and

Sources

  • CVE.orgVulnerability recordCVE-2025-59434

    Official CVE identifier

    cve.org
  • FIRST EPSSExploitation probabilityCVE-2025-59434

    30-day exploitation probability 3.65%

    first.org
  • EUVDVulnerability recordEUVD-2025-30835

    Flowise is a drag & drop user interface to build a customized large language model flow. Prior to August 2025 Cloud-Hosted Flowise, an authenticated vulnerability in Flowise Cloud allows any user on the free tier to access sensitive environment variables from other tenants via th

    euvd.enisa.europa.eu

References

Freshness

Last verified in this catalog Oct 26, 2026. Significant claims (KEV, EPSS, CVSS, affected ranges) come from the source rows above — open the original publisher for the authoritative advisory.

  • FIRST EPSSOct 26, 2026
  • CVE.orgOct 23, 2026
  • EUVDOct 23, 2026