What is CVE-2026-7646?

CVE-2026-7646 is a medium-severity vulnerability in IBM Langflow Oss, classified under Path Traversal. CVSS score: 6.5/10. Published 2026-08-05.

How severe is CVE-2026-7646?

Medium severity. CVSS v3 base score is 6.5 out of 10.

Path Traversal in IBM Langflow Oss

CVE-2026-7646

IBM Langflow OSS 1.0.0 through 1.10.3 allows users to read arbitrary files from the server filesystem, including other users' uploaded documents, the JWT signing secret, the SQLite database, and process environment variables, by sending a crafted MCP `resources/read` request with a URL-encoded path traversal sequence in the filename.

Vulnerability class: Path Traversal (Directory Traversal)

EPSS: 0.003 (23.1th percentile) — read the EPSS interpretation.

CVSS v3 metric

CVSS v3 base score 6.5 (Medium). Vector: CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:U/C:H/I:N/A:N.

Affected products

Ibm Langflow Oss — versions 1.0.0
Langflow

Weakness classification (CWE)

CWE-22 — Path Traversal

References

psirt@us.ibm.com (vendor-advisory, patch, Vendor Advisory)

Frequently asked questions

What is CVE-2026-7646?: CVE-2026-7646 is a medium-severity vulnerability in IBM Langflow Oss, classified under Path Traversal. CVSS score: 6.5/10. Published 2026-08-05.
How severe is CVE-2026-7646?: Medium severity. CVSS v3 base score is 6.5 out of 10.