CVE-2026-41273: Flowise is a drag & drop user interface to build a customized large language model flow

Q: How do I fix CVE-2026-41273?

flowise: upgrade to 3.1.0. Exact commands for each OS are on this page.

Q: Is CVE-2026-41273 being exploited?

CVE-2026-41273 is not on the CISA Known Exploited Vulnerabilities list at the time of the last update. Check again, as this can change.

Q: What does CVE-2026-41273 affect?

CVE-2026-41273 affects flowise. Severity is high (CVSS 8.2). Flowise is a drag & drop user interface to build a customized large language model flow. Prior to 3.1.0, Flowise contains an authentication bypass vulnerability that allows an unauthenticated attacker to obtain OAuth 2.0 access tokens assoc

Q: How urgent is CVE-2026-41273?

Priority 45/100. High severity; Public exploit reference; Remotely exploitable, no login, no user action

This week

HIGH 8.2REMOTEUPGRADE

CVE-2026-41273 is a high-severity flaw (CVSS 8.2) 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 3.1.0, Flowise contains an authentication bypass vulnerability that allows an unauthenticated attacker to obtain OAuth 2.0 access tokens associated with a public chatflow. By accessing a public chatflow configuration endpoint, an attacker can retrieve internal workflow data, including OAuth credential identifiers, which can then be used to refresh an

Why this priority

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

A fixed release or distro patch exists.

Risk facts

CVSS score	8.2 (High)
Attack vector	Network (remote)
Attack complexity	Low
Privileges needed	None
User interaction	None
EPSS exploit chance	0.3% (top 77%)
CISA exploited list	No
Weakness	CWE-306
Published	2026-04-23
Last modified	2026-10-26

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

Last updated 2026-10-26 · Sources: CVE Program, NVD, CISA KEV, EPSS and vendor advisories · How we score

Am I affected?

Timeline

2026-04-23 20:16 UTCPublished CVE record published
2026-10-26 21:10 UTCUpdated Record last modified

flowiseai flowise UPGRADE

Affected: < 3.1.0

Fixed in: 3.1.0

Safe to downgrade to: no unaffected older release

1. Check installed version

apt-cache policy flowise || rpm -q flowise || flowise --version

2. UPGRADE to 3.1.0 (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.

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-2026-41273?

flowise: upgrade to 3.1.0. Exact commands for each OS are on this page.

Is CVE-2026-41273 being exploited?

CVE-2026-41273 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-2026-41273 affect?

CVE-2026-41273 affects flowise. Severity is high (CVSS 8.2). Flowise is a drag & drop user interface to build a customized large language model flow. Prior to 3.1.0, Flowise contains an authentication bypass vulnerability that allows an unauthenticated attacker to obtain OAuth 2.0 access tokens assoc

How urgent is CVE-2026-41273?

Priority 45/100. High severity; Public exploit reference; Remotely exploitable, no login, no user action

Related CVEs

CVE-2026-41268 CRITICAL 9.8 UPGRADE Flowise is a drag & drop user interface to build a customized large language model flow
CVE-2026-41276 CRITICAL 9.8 UPGRADE Flowise is a drag & drop user interface to build a customized large language model flow
CVE-2026-40933 CRITICAL 9.9 UPGRADE Flowise is a drag & drop user interface to build a customized large language model flow
CVE-2026-41265 CRITICAL 9.8 UPGRADE Flowise is a drag & drop user interface to build a customized large language model flow
CVE-2026-41137 HIGH 8.8 UPGRADE Flowise is a drag & drop user interface to build a customized large language model flow

References

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