How severe is CVE-2026-55423?

CVE-2026-55423 has a CVSS 3.x base score of 6.1, rated medium severity. It is exploitable over physical access with low attack complexity, requires no privileges and no user interaction. Impact on confidentiality is high, integrity high, and availability none.

Is CVE-2026-55423 being actively exploited?

It is not currently listed in CISA's KEV catalog. Its EPSS exploit-prediction score is 0% (5th percentile), an estimate of the probability of exploitation in the next 30 days.

What products are affected by CVE-2026-55423?

CVE-2026-55423 affects Langflow. See the affected-products list for the exact vulnerable versions.

How do I fix CVE-2026-55423?

Review the linked vendor and NVD advisories for patched versions and mitigations, then upgrade or apply the recommended workaround.

Does CVE-2026-55423 have an EU (EUVD) identifier?

Yes. CVE-2026-55423 is tracked in the ENISA EU Vulnerability Database (EUVD) as EUVD-2026-38516.

When was CVE-2026-55423 published?

CVE-2026-55423 was published on 2026-06-23 and last updated on 2026-06-24.

CVE-2026-55423

CVE-2026-55423 is a medium-severity vulnerability in Langflow with a CVSS 3.x base score of 6.1. It is not currently listed as actively exploited by CISA, and its EPSS exploit-prediction score is low. The underlying weakness is classified as CWE-613.

Key facts

Severity: Medium (CVSS 3.x base score 6.1)
EPSS exploit prediction: 0% (5th percentile)
Actively exploited: Not listed in CISA KEV
EU (EUVD) id: EUVD-2026-38516
Weakness: CWE-613
Affected product: Langflow
Published: 2026-06-23
Last modified: 2026-06-24

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.

Frequently asked questions

What is CVE-2026-55423?: 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.
How severe is CVE-2026-55423?: CVE-2026-55423 has a CVSS 3.x base score of 6.1, rated medium severity. It is exploitable over physical access with low attack complexity, requires no privileges and no user interaction. Impact on confidentiality is high, integrity high, and availability none.
Is CVE-2026-55423 being actively exploited?: It is not currently listed in CISA's KEV catalog. Its EPSS exploit-prediction score is 0% (5th percentile), an estimate of the probability of exploitation in the next 30 days.
What products are affected by CVE-2026-55423?: CVE-2026-55423 affects Langflow. See the affected-products list for the exact vulnerable versions.
How do I fix CVE-2026-55423?: Review the linked vendor and NVD advisories for patched versions and mitigations, then upgrade or apply the recommended workaround.
Does CVE-2026-55423 have an EU (EUVD) identifier?: Yes. CVE-2026-55423 is tracked in the ENISA EU Vulnerability Database (EUVD) as EUVD-2026-38516.
When was CVE-2026-55423 published?: CVE-2026-55423 was published on 2026-06-23 and last updated on 2026-06-24.

References

Affected products (1)

cpe:2.3:a:langflow:langflow:*:*:*:*:*:*:*:*

More vulnerabilities in Langflow

CVE-2026-10134 — Critical (CVSS 10.0): IBM Langflow OSS 1.0.0 through 1.9.3 allows an attacker to read every secret available to the Langflow process, read…
CVE-2026-10561 — Critical (CVSS 10.0): IBM Langflow OSS 1.0.0 through 1.9.3 has an vulnerability due to an improper isolation of Python execution combined…
CVE-2026-7873 — Critical (CVSS 9.9): IBM Langflow OSS 1.0.0 through 1.10.0 allows authenticated attackers to execute arbitrary OS commands and read…
CVE-2026-33873 — Critical (CVSS 9.9): Langflow is a tool for building and deploying AI-powered agents and workflows. Prior to version 1.9.0, the Agentic…
CVE-2026-33309 — Critical (CVSS 9.9): Langflow is a tool for building and deploying AI-powered agents and workflows. Versions 1.2.0 through 1.8.1 have a…
CVE-2026-7871 — Critical (CVSS 9.8): IBM Langflow OSS 1.0.0 through 1.10.0 allows users with Redis access to execute arbitrary code with full application…

All CVEs affecting Langflow →

Other CWE-613 (Insufficient Session Expiration) vulnerabilities

CVE-2024-8888 — Critical (CVSS 10.0): An attacker with access to the network where CIRCUTOR Q-SMT is located in its firmware version 1.0.4, could steal the…
CVE-2026-46455 — Critical (CVSS 9.8): Insufficient Session Expiration vulnerability in Apache Camel Keycloak Component. The camel-keycloak security helper…
CVE-2026-21622 — Critical (CVSS 9.8): Insufficient Session Expiration vulnerability in hexpm hexpm/hexpm ('Elixir.Hexpm.Accounts.PasswordReset' module)…
CVE-2025-59786 — Critical (CVSS 9.8): 2N Access Commander version 3.4.2 and prior improperly invalidates session tokens, allowing multiple session cookies to…
CVE-2026-26342 — Critical (CVSS 9.8): Tattile Smart+, Vega, and Basic device families firmware versions 1.181.5 and prior implement an authentication token…
CVE-2026-1435 — Critical (CVSS 9.8): Not properly invalidated session vulnerability in Graylog Web Interface, version 2.2.3, due to incorrect management of…

Browse all CWE-613 (Insufficient Session Expiration) vulnerabilities →