CVE-2026-55423: Langflow is a tool for building and deploying AI-powered agents and workflows

Q: How do I fix CVE-2026-55423?

langflow: upgrade to 1.7.0. Exact commands for each OS are on this page.

Q: Is CVE-2026-55423 being exploited?

CVE-2026-55423 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-2026-55423 affect?

CVE-2026-55423 affects langflow. Severity is medium (CVSS 6.1). Langflow is a tool for building and deploying AI-powered agents and workflows. Prior to 1.7.0, the logout button does not clear the session. The previous user stays logged in unless another user explicitly logs in. This vulnerability is fix

Q: How urgent is CVE-2026-55423?

Priority 29/100. Public exploit reference

Routine

MEDIUM 6.1UPGRADE

CVE-2026-55423 is a medium-severity flaw (CVSS 6.1) affecting langflow. Below: why it ranks where it does, which versions are affected, what to do, and the exact commands.

Langflow is a tool for building and deploying AI-powered agents and workflows. Prior to 1.7.0, the logout button does not clear the session. The previous user stays logged in unless another user explicitly logs in. This vulnerability is fixed in 1.7.0.

Why this priority

Public exploit reference

A fixed release or distro patch exists.

Risk facts

CVSS score	6.1 (Medium)
Attack vector	Physical
Attack complexity	Low
Privileges needed	None
User interaction	None
EPSS exploit chance	0.2% (top 87%)
CISA exploited list	No
Weakness	CWE-613
Published	2026-06-23
Last modified	2026-10-25

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

Last updated 2026-10-25 · Sources: CVE Program, NVD, CISA KEV, EPSS and vendor advisories · How we score

Am I affected?

Timeline

2026-06-23 17:17 UTCPublished CVE record published
2026-10-25 23:10 UTCUpdated Record last modified

langflow langflow UPGRADE

Affected: < 1.7.0

Fixed in: 1.7.0

Safe to downgrade to: no unaffected older release

1. Check installed version

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

2. UPGRADE to 1.7.0 (Debian / Ubuntu)

sudo apt update && sudo apt install --only-upgrade langflow

2. UPGRADE (RHEL / Amazon Linux / Fedora)

sudo dnf upgrade langflow

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-2026-55423?

langflow: upgrade to 1.7.0. Exact commands for each OS are on this page.

Is CVE-2026-55423 being exploited?

CVE-2026-55423 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-2026-55423 affect?

CVE-2026-55423 affects langflow. Severity is medium (CVSS 6.1). Langflow is a tool for building and deploying AI-powered agents and workflows. Prior to 1.7.0, the logout button does not clear the session. The previous user stays logged in unless another user explicitly logs in. This vulnerability is fix

How urgent is CVE-2026-55423?

Priority 29/100. Public exploit reference

Related CVEs

CVE-2026-7528 HIGH 7.1 UPGRADE IBM Langflow OSS 1.0.0 through 1.9.0 could allow a denial of service due to uncontrolled resource consumption.
CVE-2026-5022 MEDIUM 5.3 MITIGATE The '/api/v1/files/images/{flow_id}/{file_name}' endpoint does not enforce any authentication or authorization
CVE-2026-55255 HIGH 8.4 EXPLOITED UPGRADE Langflow Authorization Bypass Through User-Controlled Key Vulnerability
CVE-2026-55450 CRITICAL 9.3 UPGRADE Langflow is a tool for building and deploying AI-powered agents and workflows
CVE-2026-10561 CRITICAL 10.0 UPGRADE IBM Langflow OSS 1.0.0 through 1.9.3 has an vulnerability due to an improper isolation of Python execution com

References

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