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CVE-2026-69254: Flowise is a drag & drop user interface to build a customized large language model flow

49
This month
HIGH 8.8UPGRADE

CVE-2026-69254 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, executeJavaScriptCode() accepted caller-provided nodeVMOptions and merged them over the default NodeVM security settings in packages/components/src/utils.ts. An authenticated attacker reaching packages/server/src/routes/node-custom-functions/index.ts could run a custom function that imported flowise-components/dist/src/utils.js, called execute

Why this priority

  • High severity
  • Public exploit reference

A fixed release or distro patch exists.

Risk facts

CVSS score8.8 (High)
Attack vectorNetwork (remote)
Attack complexityLow
Privileges neededLow
User interactionNone
EPSS exploit chance0.7% (top 48%)
CISA exploited listNo
WeaknessCWE-94
Published2026-08-04
Last modified2026-10-23
Publisher (CNA): GitHub, Inc. · Vendor: flowiseai

Am I affected?

Timeline

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

Public exploits and detection

Public code exists for this CVE. Treat unpatched systems as at risk, and only run PoCs in a lab.

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.

Quick answers

How do I fix CVE-2026-69254?

flowise: upgrade to 3.1.3. Exact commands for each OS are on this page.

Is CVE-2026-69254 being exploited?

CVE-2026-69254 is not on the CISA Known Exploited Vulnerabilities list at the time of the last update. Check again, as this can change.

What does CVE-2026-69254 affect?

CVE-2026-69254 affects flowise. Severity is high (CVSS 8.8). Flowise is a drag & drop user interface to build a customized large language model flow. Prior to 3.1.3, executeJavaScriptCode() accepted caller-provided nodeVMOptions and merged them over the default NodeVM security settings in packages/co

How urgent is CVE-2026-69254?

Priority 49/100. High severity; Public exploit reference

Related CVEs

References

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