CVE-2026-69258: Flowise is a drag & drop user interface to build a customized large language model flow

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CRITICAL 9.1REMOTEUPGRADE

CVE-2026-69258 is a critical-severity flaw (CVSS 9.1) 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 unauthenticated POST /api/v1/prediction/:id endpoint accepted an overrideConfig object and unconditionally spread it into internal flowConfig and flowData objects in packages/server/src/utils/buildChatflow.ts and packages/server/src/utils/index.ts without checking apiOverrideStatus. This allowed unauthenticated attackers to inject arbitrar

Why this priority

Critical severity
Public exploit reference
Remotely exploitable, no login, no user action

A fixed release or distro patch exists.

Risk facts

CVSS score	9.1 (Critical)
Attack vector	Network (remote)
Attack complexity	Low
Privileges needed	None
User interaction	None
EPSS exploit chance	0.7% (top 49%)
CISA exploited list	No
Weakness	CWE-639, CWE-915
Published	2026-08-04
Last modified	2026-10-23

Publisher (CNA): GitHub, Inc. · Vendor: flowiseai

Am I affected?

Timeline

2026-08-04 17:17 UTCPublished CVE record published
2026-10-23 21:10 UTCUpdated 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

Fedora 46 · pspp · FIXED · 2.1.3-2.fc46 · FEDORA-2026-0d6444911b · source

sudo dnf upgrade --advisory=FEDORA-2026-0d6444911b

Fedora ELN · barman · FIXED · 3.20.1-3.eln159 · FEDORA-2026-45ecf042c2 · source

sudo dnf upgrade --advisory=FEDORA-2026-45ecf042c2

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.

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

References

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