CVE-2025-71336: Flowise versions 2.2.7-patch.1 and earlier contain a critical unsandboxed remote code execution
Affects FlowiseSource GCVE Database
Not known to be exploited · CVSS 9.8 Critical : upgrade to 3.0.6 as a priority.
Data as of 29 Oct 2026, 19:04 UTC
- EPSS
- 1.1% chance of exploitation in 30 days – higher than 66% of CVEsExploit Prediction Scoring System: the likelihood attackers will use this flaw soon.
- Patch
- Available – fixed in 3.0.6
CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:HExploitation evidence
Disclosed: evidence found.
CVE published 26 Jun 2026
Detectable: no evidence on record.
No public nuclei template indexed
Weaponized: no evidence on record.
No public exploit code indexed in Metasploit or Exploit-DB
Exploited in the wildExploited: no evidence on record.
Not in CISA KEV and no source reports exploitation
Observed by OffSeq MirageSeen by Mirage: no evidence on record.
No attack traffic recorded by OffSeq Mirage sensors
A missing step is not evidence of safety. Sources: cve.org (opens in a new tab), the Metasploit, Exploit-DB and nuclei-templates index as of 29 Oct 2026.
What to do
Upgrade flowiseai/Flowise to 3.0.6.
Affected software
| Product | Affected | Fixed in |
|---|---|---|
GitHubflowiseai/Flowisepkg:github/flowiseai/FlowiseOther threats | Affected
| Fixed in
|
Check your own hosts for these packages with threat-finder (opens in a new tab), our free open-source scanner.
AI-suggested
If you cannot patch yet, users should ensure that FLOWISE_USERNAME and FLOWISE_PASSWORD environment variables are set to enable authentication, thereby preventing unauthenticated access. Additionally, restrict network access to the vulnerable endpoint and monitor for suspicious requests containing the 'x-request-from: internal' header.
Description
Flowise versions 2.2.7-patch.1 and earlier contain a critical unsandboxed remote code execution vulnerability in the Custom MCP feature. This feature executes OS commands to launch local MCP servers. Due to minimal authentication and lack of role-based access control, and default installations running without authentication unless credentials are set, an attacker can send a crafted JSON payload with a specific header to execute arbitrary OS commands. This leads to complete compromise of the platform container or server.