CVE-2026-55255
KEV High · CVSS 8.4- CVSS
- 8.4
- nvd
- EPSS
- —
- KEV
- Listed
- 2026-07-07
- Class
- oss containerizable
- CWE-639
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.
Affected packages
| PyPI | langflow | 0 → 1.9.1 |
| PyPI | langflow | 0 → 1.9.2 |
References
- https://github.com/langflow-ai/langflow/commit/2c9f498d664a3c32698b57d7c5e752625291060e
- https://github.com/langflow-ai/langflow/pull/12832
- https://github.com/langflow-ai/langflow/security/advisories/GHSA-qrpv-q767-xqq2
- https://github.com/langflow-ai/langflow/security/advisories/GHSA-qrpv-q767-xqq2
- https://webflow.sysdig.com/blog/understanding-langflow-cve-2026-55255-and-why-higher-cvss-vulnerabilities-arent-always-the-most-exploited
- https://www.cisa.gov/known-exploited-vulnerabilities-catalog?field_cve=CVE-2026-55255
Status: profiled · ingested 2026-10-08T00:00:43.000Z