6.1

CVE-2026-55423: langflow-ai langflow Insufficient Session Expiration

CVSS: 6.1v3.1MediumAnalyzed
AliasesGHSA-7hw8-6q6r-4276PYSEC-2026-222
Published 23-06-2026Last modified 23-06-2026
Open JSON

Vulnerability summary

CVE-2026-55423 is a medium (CVSS 6.1) Insufficient Session Expiration vulnerability in langflow-ai langflow. EPSS estimates a 0.22% chance of exploitation in the next 30 days, higher than 12% of scored vulnerabilities. 1 public exploit is recorded.

Overall risk
34/100
0100
Medium · default modelHow is this calculated?
CVSS score
6.1/10
010
Medium · v3.1 (CVE.org)
EPSS score
0.22%
0%100%
Low · 0.00 pp in 30 days
KEVNot listedIn no KEV catalog
RansomwareNone recordedNo known use recorded
Public exploits1github

Timeline

  1. 23-06-2026
    PublishedVulnerability first disclosed.
  2. 23-06-2026
    Last modifiedVulnerability information updated.

Description

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.

CVSS metrics

3 scores · 3 sources · 1 version

EPSS trend

Probability

0.22%

Chance of exploitation in the next 30 days

Percentile

12%

Versus all other CVEs

30-day change

0.00 pp

From 0.22% on 21-09-2026

21-09-202621-10-2026
EPSS score
0.22%

Known exploited

Compare KEV catalogs

Not in any of the 3 tracked catalogs.

Public exploits

1 found
  • githubUnverified

    Langflow

    Maturity: poc

Weaknesses

CWE · root cause

Affected systems

Langflow1 product
Langflow-ai1 product
PyPI1 product
  • langflow< 1.7.0

3 vendors · 3 products

References

6 links