What is CVE-2026-17621?

CVE-2026-17621 is a medium-severity vulnerability, classified under Path Traversal. CVSS score: 5.4/10. Published 2026-09-04.

How severe is CVE-2026-17621?

Medium severity. CVSS v3 base score is 5.4 out of 10.

CVE-2026-17621

CVE-2026-17621

IBM Langflow OSS 1.0.0 through 1.10.2 could allow a remote attacker to traverse directories on the system. An attacker could send a specially crafted URL request containing "dot dot " sequences ( /.. /) to view arbitrary files on the system.

Vulnerability class: Path Traversal (Directory Traversal)

CVSS v3 metric

CVSS v3 base score 5.4 (Medium). Vector: CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:U/C:L/I:L/A:N.

Weakness classification (CWE)

CWE-22 — Path Traversal

References

psirt@us.ibm.com

Frequently asked questions

What is CVE-2026-17621?: CVE-2026-17621 is a medium-severity vulnerability, classified under Path Traversal. CVSS score: 5.4/10. Published 2026-09-04.
How severe is CVE-2026-17621?: Medium severity. CVSS v3 base score is 5.4 out of 10.