What is CVE-2026-3965?

CVE-2026-3965 is a medium-severity vulnerability in Whyour Qinglong, classified under Protection Mechanism Failure. CVSS score: 6.3/10. Published 2026-03-12.

How severe is CVE-2026-3965?

Medium severity. CVSS v3 base score is 6.3 out of 10.

Vulnerability in Whyour Qinglong

CVE-2026-3965

A security vulnerability has been detected in whyour qinglong up to 2.20.1. Affected is an unknown function of the file back/loaders/express.ts of the component API Interface. The manipulation of the argument command leads to protection mechanism failure. The attack may be initiated remotely. The exploit has been disclosed publicly and may be used. Upgrading to version 2.20.2 is able to address this issue. The identifier of the patch is 6bec52dca158481258315ba0fc2f11206df7b719. It is advisable to upgrade the affected component. The code maintainer was informed beforehand about the issues. He reacted very fast and highly professional.

EPSS: 0.004 (36.1th percentile) — read the EPSS interpretation.

CVSS v3 metric

CVSS v3 base score 6.3 (Medium). Vector: CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:U/C:L/I:L/A:L.

Affected products

Whyour Qinglong — versions 2.20.0, 2.20.1, 2.20.2

Weakness classification (CWE)

CWE-693 — Protection Mechanism Failure

References

cna@vuldb.com (technical-description, vdb-entry)
cna@vuldb.com (signature, permissions-required)
cna@vuldb.com (third-party-advisory)
cna@vuldb.com (issue-tracking)
cna@vuldb.com (issue-tracking, patch)
cna@vuldb.com (issue-tracking, exploit)
cna@vuldb.com (patch)
cna@vuldb.com (patch)
cna@vuldb.com (product)

Frequently asked questions

What is CVE-2026-3965?: CVE-2026-3965 is a medium-severity vulnerability in Whyour Qinglong, classified under Protection Mechanism Failure. CVSS score: 6.3/10. Published 2026-03-12.
How severe is CVE-2026-3965?: Medium severity. CVSS v3 base score is 6.3 out of 10.