# CVE-2026-6542

> Vulnerability · severity: **MEDIUM** (CVSS 6.5).

## Description

IBM Langflow OSS 1.0.0 through 1.8.4 could allow any user to supply a flow_id to read transaction logs and vertex build data belonging to other users, and to delete persisted vertex build data for another user's flow.

## Key facts

- **CVE ID:** CVE-2026-6542
- **Published:** 2026-04-30
- **CVSS severity:** MEDIUM
- **CVSS base score:** 6.5
- **CWE codes:** CWE-639

## Affected products

- `langflow:langflow`

## Primary sources

- NIST NVD: https://nvd.nist.gov/vuln/detail/CVE-2026-6542

## Citation

> AI Analytics. CVE-2026-6542. Retrieved 2026-07-19 from https://api.ai-analytics.org/cve/CVE-2026-6542. Derived from NIST NVD. Licensed CC0.

---

*[Dataset catalog](https://api.ai-analytics.org/datasets/) · [AI Analytics](https://api.ai-analytics.org/) · CC0 1.0*