What is CVE-2026-2391?

CVE-2026-2391 is a low-severity vulnerability in Qs_project Qs, classified under Improper Input Validation. CVSS score: 3.7/10. Published 2026-02-12.

How severe is CVE-2026-2391?

Low severity. CVSS v3 base score is 3.7 out of 10.

Improper input validation in Qs_project Qs

CVE-2026-2391

### Summary The `arrayLimit` option in qs does not enforce limits for comma-separated values when `comma: true` is enabled, allowing attackers to cause denial-of-service via memory exhaustion. This is a bypass of the array limit enforcemen…

Vulnerability class: Drupalgeddon 2 (CVE-2018-7600)

EPSS: 0.005 (37.6th percentile) — read the EPSS interpretation.

CVSS v3 metric

CVSS v3 base score 3.7 (Low). Vector: CVSS:3.1/AV:N/AC:H/PR:N/UI:N/S:U/C:N/I:N/A:L.

Affected products

Qs_project Qs

Weakness classification (CWE)

CWE-20 — Improper Input Validation

References

7ffcee3d-2c14-4c3e-b844-86c6a321a158 (Exploit, vendor-advisory, Vendor Advisory)
7ffcee3d-2c14-4c3e-b844-86c6a321a158 (Patch, patch)

Frequently asked questions

What is CVE-2026-2391?: CVE-2026-2391 is a low-severity vulnerability in Qs_project Qs, classified under Improper Input Validation. CVSS score: 3.7/10. Published 2026-02-12.
How severe is CVE-2026-2391?: Low severity. CVSS v3 base score is 3.7 out of 10.