PatchTheCVECVE-2026-69255: Flowise is a drag & drop user interface to build a customized large language model flow
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HIGH 8.8UPGRADE
CVE-2026-69255 is a high-severity flaw (CVSS 8.8) affecting flowise. Below: why it ranks where it does, which versions are affected, what to do, and the exact commands.
Flowise is a drag & drop user interface to build a customized large language model flow. Prior to 3.1.3, the CSVAgent in packages/components/nodes/agents/CSVAgent/CSVAgent.ts extracted attacker-controlled CSV data with file.split(',').pop() and interpolated it directly into executable Python as base64_string = "${base64String}" before calling Pyodide. The validatePythonCodeForDataFrame() denylist only checked later LLM-generated code and did not
Why this priority
- High severity
- Public exploit reference
A fixed release or distro patch exists.
Risk facts
| CVSS score | 8.8 (High) |
| Attack vector | Network (remote) |
| Attack complexity | Low |
| Privileges needed | Low |
| User interaction | None |
| EPSS exploit chance | 0.6% (top 52%) |
| CISA exploited list | No |
| Weakness | CWE-94 |
| Published | 2026-08-04 |
| Last modified | 2026-10-23 |
Publisher (CNA): GitHub, Inc. · Vendor: flowiseai
Am I affected?
Timeline
- Published CVE record published
- Updated Record last modified
flowiseai flowise UPGRADE
Affected: < 3.1.3
Fixed in: 3.1.3
Safe to downgrade to: no unaffected older release
1. Check installed version
apt-cache policy flowise || rpm -q flowise || flowise --version
2. UPGRADE to 3.1.3 (Debian / Ubuntu)
sudo apt update && sudo apt install --only-upgrade flowise
2. UPGRADE (RHEL / Amazon Linux / Fedora)
sudo dnf upgrade flowise
Note
Distros often backport fixes without changing the version number. Confirm with the distro advisory or changelog.
Exact fixes by distribution
npm · flowise · FIXED · 3.1.3 · vulnerable: <= 3.1.2 · source
npm install flowise@">=3.1.3"
npm ls flowise
npm · flowise-components · FIXED · 3.1.3 · vulnerable: <= 3.1.2 · source
npm install flowise-components@">=3.1.3"
npm ls flowise-components
Fedora 46 · python-fontconfig · FIXED · 0.6.3-1.fc46 · FEDORA-2026-f92ca8b01f · source
sudo dnf upgrade --advisory=FEDORA-2026-f92ca8b01f
Fedora ELN · valgrind · FIXED · 3.28.0-1.eln159 · FEDORA-2026-c593ef1d15 · source
sudo dnf upgrade --advisory=FEDORA-2026-c593ef1d15
Verify at the official source NVD · CVE Program · Report a problem with this page
Scores and fixes here are computed automatically from those and other public sources. Confirm with the vendor advisory before changing production systems.
Scores and fixes here are computed automatically from those and other public sources. Confirm with the vendor advisory before changing production systems.
Related CVEs
- CVE-2026-69253 HIGH 8.8 UPGRADE Flowise is a drag-and-drop user interface for building customized large language model (LLM) flows
- CVE-2026-69254 HIGH 8.8 UPGRADE Flowise is a drag & drop user interface to build a customized large language model flow
- CVE-2026-69250 HIGH 7.5 UPGRADE Flowise is a drag & drop user interface to build a customized large language model flow
- CVE-2026-69252 HIGH 8.8 UPGRADE Flowise is a drag & drop user interface to build a customized large language model flow
- CVE-2026-69264 CRITICAL 9.8 UPGRADE Prior to 3.1.3, Flowise CSVAgent interpolates an attacker-controlled segment of the csvFile data URI directly