CVE-2026-4929 MEDIUM

CVE-2026-4929: Simple Hierarchical Select (Drupal 7) XSS in term-derived output

Vendor Drupal
Product Simple Hierarchical Select (shs)
Published May 21, 2026
Last update May 22, 2026

CVSS base score

5.1/10
Attack vector Network
Attack complexity Low
Privileges required Low
User interaction
Confidentiality
Integrity

CVSS vector

CVSS:4.0/AV:N/AC:L/AT:N/PR:L/UI:P/VC:L/VI:L/VA:N/SC:L/SI:L/SA:N

What the vulnerability does

Description

Simple Hierarchical Select (SHS) for Drupal 7 contains cross-site scripting risk due to improper output escaping of term-derived text. Confirmed affected paths include field formatter output (shs_field_formatter_view) and term-tree child-term data generation (shs_term_get_children). Malicious taxonomy term names can be rendered unsafely depending on output context. This affects versions from 7.x-1.0 through (and including) 7.x-1.10.

Key dates

Disclosure timeline

May 21, 2026 CVE published
May 22, 2026 Record updated