PyPI/langflow CVE-2026-55255: high 8.4, exploited, EPSS 0.89%
Langflow: IDOR Vulnerability in `/api/v1/responses` Endpoint Allows Authenticated Attackers to Access Another User's Flow
Action: Upgrade langflow to 1.9.1 or later.
pip install langflow==1.9.1Affected
| introduced | fixed | last affected |
|---|---|---|
| 0 | 1.9.1 | - |
Fixed versions
| 1.9.1 |
Sources
- osv: GHSA-qrpv-q767-xqq2
- kev: CVE-2026-55255
- https://github.com/langflow-ai/langflow/security/advisories/GHSA-qrpv-q767-xqq2
- https://nvd.nist.gov/vuln/detail/CVE-2026-55255
- https://github.com/langflow-ai/langflow/pull/12832
- https://github.com/langflow-ai/langflow/commit/2c9f498d664a3c32698b57d7c5e752625291060e
- https://github.com/langflow-ai/langflow
- https://github.com/pypa/advisory-database/tree/main/vulns/langflow/PYSEC-2026-221.yaml
- 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
CVE-2026-55255 · published · modified · JSON