What is CVE-2026-3211?

CVE-2026-3211 is a medium-severity vulnerability in Drupal Theme Negotiation By Rules, classified under Cross-Site Request Forgery (CSRF). CVSS score: 4.3/10. Published 2026-03-25.

How severe is CVE-2026-3211?

Medium severity. CVSS v3 base score is 4.3 out of 10.

CSRF in Drupal Theme Negotiation By Rules

CVE-2026-3211

Cross-Site Request Forgery (CSRF) vulnerability in Drupal Theme Negotiation by Rules allows Cross Site Request Forgery.This issue affects Theme Negotiation by Rules: from 0.0.0 before 1.2.1.

Vulnerability class: CSRF (Cross-Site Request Forgery)

EPSS: 0.001 (0.9th percentile) — read the EPSS interpretation.

CVSS v3 metric

CVSS v3 base score 4.3 (Medium). Vector: CVSS:3.1/AV:N/AC:L/PR:N/UI:R/S:U/C:N/I:L/A:N.

Affected products

Drupal Theme Negotiation By Rules — versions 0.0.0
Webikon Theme_negotiation_by_rules

Weakness classification (CWE)

CWE-352 — Cross-Site Request Forgery (CSRF)

References

mlhess@drupal.org (Vendor Advisory)

Frequently asked questions

What is CVE-2026-3211?: CVE-2026-3211 is a medium-severity vulnerability in Drupal Theme Negotiation By Rules, classified under Cross-Site Request Forgery (CSRF). CVSS score: 4.3/10. Published 2026-03-25.
How severe is CVE-2026-3211?: Medium severity. CVSS v3 base score is 4.3 out of 10.