TI-2026-04298 Aliases CVE-2026-4929 GHSA-w38v-4c3f-mg76

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

MEDIUM 56CWE-79Published 2026-05-21 · Updated 2026-05-22

Key facts

Attack vector: Network
Privileges required: Low
User interaction: Passive
Attack complexity: Low
Attack requirements: None
Impact type: Cross-site scripting
Confidentiality · integrity · availability: Low · Low · None
Fix status: Fixed

Attack profile from CVSS 4.0 · CNA. Fix status from CNA. Impact type from CWE-79.

Summary

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.

Why it matters now

Exploitation Proof of concept CISA SSVC · not in CISA KEV

EPSS 0.00205 10th percentileScored 2026-11-07

Public exploit Yes 2 exploit referencesTagged by NVD

Fix Fixed Simple Hierarchical Select (shs) (Drupal): 7.x-1.11

SSVC decision points

CISA ADP · SSVC 2.0.3

Exploitation: Poc
Automatable: No
Technical impact: Partial

The decision (Track, Attend, Act) also depends on your mission and well-being impact; see CISA's SSVC guide.

Affected products

Vendor	Product	Affected versions	Fixed in	Status	Source
Drupal	Simple Hierarchical Select (shs)	7.x-1.0 to before 7.x-1.11	7.x-1.11	Patch available	CNA

Simple Hierarchical Select (shs) VendorDrupal Affected 7.x-1.0 to before 7.x-1.11 Fixed in 7.x-1.11 Patch available CNA

CPE configurations NVD · 1

CPE	Versions	Role	Vendor
cpe:2.3:a:simple_hierarchical_select_project:simple_hierarchical_select::::::drupal::*	7.x-1.0 – 7.x-1.10	Vulnerable	Simple Hierarchical Select Project

cpe:2.3:a:simple_hierarchical_select_project:simple_hierarchical_select:*:*:*:*:*:drupal:*:* Versions 7.x-1.0 – 7.x-1.10 Vulnerable ·Simple Hierarchical Select Project

Remediation

Fix · CNA Simple Hierarchical Select (shs) (Drupal) Fixed in 7.x-1.11

Timeline

2026-10-02 Threatist record created from CVE-2026-4929
2026-10-03 Alias added: GHSA-w38v-4c3f-mg76

References

Exploit 2

Advisory 1

https://d7es.tag1.com/security-advisories/simple-hierarchical-select-moderately-critical-cross-site-scripting

TI-2026-07979 Drupal core - Highly critical - SQL injection - SA-CORE-2026-004 KEVCVSS 3.1CRITICAL 9.8
TI-2018-05494 Drupal core - Highly critical - Remote Code Execution - SA-CORE-2018-004 KEVCVSS 3.1CRITICAL 9.8
TI-2018-05493 Improper input validation in Drupal before 7.58, 8.x before 8.3.9, 8.4.x before 8.4.6… KEVCVSS 3.1CRITICAL 9.8
TI-2020-10731 Unrestricted file upload in Drupal Core KEVCVSS 3.1HIGH 8.8
TI-2019-04505 Drupal core - Highly critical - Remote Code Execution KEVCVSS 3.1HIGH 8.1
TI-2020-17477 Archive_Tar through 1.4.10 has :// filename sanitization only to address phar attacks… KEVCVSS 3.1HIGH 7.8

See all 941 →

Sources

This product uses the NVD API but is not endorsed or certified by the NVD. Sources and licences