CVE-2026-4929

MEDIUM

Simple Hierarchical Select (Drupal 7) XSS in term-derived output

Title source: cna
STIX 2.1

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.

References (2)

Core 2
Core References
Third Party Advisory third-party-advisory
NES patch branch comparison
https://www.herodevs.com/vulnerability-directory/cve-2026-4929

Scores

CVSS v4 5.1
EPSS 0.0004
EPSS Percentile 13.7%
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/E:X/CR:X/IR:X/AR:X/MAV:X/MAC:X/MAT:X/MPR:X/MUI:X/MVC:X/MVI:X/MVA:X/MSC:X/MSI:X/MSA:X/S:X/AU:X/R:X/V:X/RE:X/U:X

CISA SSVC

Vulnrichment
Exploitation poc
Automatable no
Technical Impact partial

Details

Status published
Products (1)
Drupal/Simple Hierarchical Select (shs) 7.x-1.0 - 7.x-1.11
Published May 21, 2026
Tracked Since May 22, 2026