THREATPORT/VULNERABILITY/CVE-2025-59434
CRITICAL SEVERITY

CVE-2025-59434

CVE-2025-59434 vulnerability

CVSS
9.6
EPSS
3.1%
EPSS pct
87th
Exploited
No known
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.
Affected vendor
See references
Affected product
See references
CVSS vector
CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:C/C:H/I:H/A:N
Weakness type (CWE)
  • CWE-200 — Exposure of Sensitive Information
  • CWE-284 — Improper Access Control
Published
2025-09-22

Risk analysis

Based on its CVSS vector, this vulnerability is exploitable over the network, low attack complexity, requiring low privileges, no user interaction. Successful exploitation leads to high impact to confidentiality, high impact to integrity.

Its EPSS score of 3.1% reflects a lower probability of exploitation activity in the wild over the next 30 days, placing it above 87% of all scored CVEs.

Check your external exposure to CVE-2025-59434

  • Confirm whether the affected software is running on any internet-facing host or subdomain.
  • Match discovered service fingerprints against the version affected by CVE-2025-59434.
  • Prioritise remediation if the asset is public, business-critical, or near authentication/payment flows.

How ThreatPort helps with CVE-2025-59434

ThreatPort's external attack surface scanner checks your internet-facing assets — agentlessly, from the outside in — for the exposed services and versions that CVE-2025-59434 affects, then prioritises the finding by real risk using CISA KEV and FIRST.org EPSS.

Run a free external exposure scan

Are you exposed to CVE-2025-59434?

Run an instant, non-intrusive external scan to check your attack surface for CVE-2025-59434.

Start free scan

No credit card. Agentless.

Related vulnerabilities

CRITICAL
CVE-2026-1306
CVE-2026-1306 vulnerability
CRITICAL
CVE-2026-2329
Gxp1610 Firmware vulnerability
CRITICAL
CVE-2026-27174
Majordomo vulnerability