Auth bypass in Drupal Wisski

CVE-2026-13239

Missing Authorization vulnerability in Drupal WissKI allows Forceful Browsing. This issue affects WissKI versions: from 0.0.0 to 4.2.0.

Vulnerability class: Broken Access Control

EPSS: 0.003 (18.1th percentile) — read the EPSS interpretation.

CVSS v3 metric

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

Affected products

Drupal Wisski — versions 0.0.0
Wiss-ki Wisski

Weakness classification (CWE)

CWE-862 — Missing Authorization

References

mlhess@drupal.org (Vendor Advisory)

Frequently asked questions

What is CVE-2026-13239?: CVE-2026-13239 is a medium-severity vulnerability in Drupal Wisski, classified under Missing Authorization. CVSS score: 6.5/10. Published 2026-07-10.
How severe is CVE-2026-13239?: Medium severity. CVSS v3 base score is 6.5 out of 10.