Go to homepageCyberStrike

Menu

Star on GitHub · 3.2k
Sign inDownload

CVE-2026-55255

8.4 · HIGHActively Exploited

Langflow is a tool for building and deploying AI-powered agents and workflows.

Published Jun 23, 2026CWE-639EPSS 0.89%

Overview

CVE-2026-55255 is a high-severity vulnerability. It was published on June 23, 2026 and has a CVSS 3.1 base score of 8.4 (HIGH). This vulnerability is listed in CISA's Known Exploited Vulnerabilities catalog, indicating active exploitation in the wild.

This vulnerability has a CVSS 3.1 base score of 8.4, rated HIGH. It can be exploited remotely over the network. Some level of privileges is required for exploitation.

Technical description

Langflow is a tool for building and deploying AI-powered agents and workflows. Prior to 1.9.1, an Insecure Direct Object Reference (IDOR) vulnerability in /api/v1/responses endpoint allows an authenticated attacker to execute any flow belonging to another user by specifying the victim's flow ID in the request. This vulnerability is fixed in 1.9.1.

Remediation

Check the references section for vendor advisories, patches, and mitigation guidance. If immediate patching is not possible, review the CVSS vector to understand the attack surface and apply compensating controls such as network segmentation or access restrictions.

References

GitHubgithub.com/langflow-ai/langflow/commit/2c9f498d664a3c32698b57d7c5e752625291060eGitHubgithub.com/langflow-ai/langflow/pull/12832GitHubgithub.com/langflow-ai/langflow/security/advisories/GHSA-qrpv-q767-xqq2GitHubgithub.com/langflow-ai/langflow/security/advisories/GHSA-qrpv-q767-xqq2Refwebflow.sysdig.com/blog/understanding-langflow-cve-2026-55255-and-why-higher-cvss-vulnerabilities-arent-always-the-most-exploitedCISAwww.cisa.gov/known-exploited-vulnerabilities-catalog?field_cve=CVE-2026-55255

How CyberStrike helps

Frequently asked questions

What is CVE-2026-55255?

CVE-2026-55255 is a high-severity vulnerability. It was published on June 23, 2026 and has a CVSS 3.1 base score of 8.4 (HIGH). This vulnerability is listed in CISA's Known Exploited Vulnerabilities catalog, indicating active exploitation in the wild.

How severe is CVE-2026-55255?

This vulnerability has a CVSS 3.1 base score of 8.4, rated HIGH. It can be exploited remotely over the network. Some level of privileges is required for exploitation.

How do I fix or remediate CVE-2026-55255?

Check the references section for vendor advisories, patches, and mitigation guidance. If immediate patching is not possible, review the CVSS vector to understand the attack surface and apply compensating controls such as network segmentation or access restrictions.

How can CyberStrike help with CVE-2026-55255?

CyberStrike is an open-source, AI-augmented pentesting engine. Rather than flag a version number, it tests whether an issue like CVE-2026-55255 is actually reachable in your own applications and APIs, then verifies each finding before reporting it. That tells you if the weakness is a real, exploitable risk in your environment or a false positive you can safely deprioritize.

Related HIGH CVEs from 2026

View all
Browse by year2026202520242023202220212020201920182017201620152014201320122011201020092008200720062005200420032002200120001999