How severe is CVE-2026-4929?

CVE-2026-4929 has a CVSS 3.x base score of 5.4, rated medium severity. It is exploitable over network with low attack complexity, requires low privileges and user interaction. Impact on confidentiality is low, integrity low, and availability none.

Is CVE-2026-4929 being actively exploited?

It is not currently listed in CISA's KEV catalog. Its EPSS exploit-prediction score is 0% (11th percentile), an estimate of the probability of exploitation in the next 30 days.

What products are affected by CVE-2026-4929?

CVE-2026-4929 affects Simple Hierarchical Select Project Simple Hierarchical Select. See the affected-products list for the exact vulnerable versions.

How do I fix CVE-2026-4929?

Review the linked vendor and NVD advisories for patched versions and mitigations, then upgrade or apply the recommended workaround.

Does CVE-2026-4929 have an EU (EUVD) identifier?

Yes. CVE-2026-4929 is tracked in the ENISA EU Vulnerability Database (EUVD) as EUVD-2026-31381.

When was CVE-2026-4929 published?

CVE-2026-4929 was published on 2026-05-21 and last updated on 2026-06-17.

CVE-2026-4929

CVE-2026-4929 is a medium-severity vulnerability in Simple Hierarchical Select Project Simple Hierarchical Select with a CVSS 3.x base score of 5.4. It is not currently listed as actively exploited by CISA, and its EPSS exploit-prediction score is low. The underlying weakness is classified as CWE-79.

Key facts

Severity: Medium (CVSS 3.x base score 5.4)
CVSS v4: 5.1
EPSS exploit prediction: 0% (11th percentile)
Actively exploited: Not listed in CISA KEV
EU (EUVD) id: EUVD-2026-31381
Weakness: CWE-79
Affected product: Simple Hierarchical Select Project Simple Hierarchical Select
Published: 2026-05-21
Last modified: 2026-06-17

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.

Frequently asked questions

What is CVE-2026-4929?: 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.
How severe is CVE-2026-4929?: CVE-2026-4929 has a CVSS 3.x base score of 5.4, rated medium severity. It is exploitable over network with low attack complexity, requires low privileges and user interaction. Impact on confidentiality is low, integrity low, and availability none.
Is CVE-2026-4929 being actively exploited?: It is not currently listed in CISA's KEV catalog. Its EPSS exploit-prediction score is 0% (11th percentile), an estimate of the probability of exploitation in the next 30 days.
What products are affected by CVE-2026-4929?: CVE-2026-4929 affects Simple Hierarchical Select Project Simple Hierarchical Select. See the affected-products list for the exact vulnerable versions.
How do I fix CVE-2026-4929?: Review the linked vendor and NVD advisories for patched versions and mitigations, then upgrade or apply the recommended workaround.
Does CVE-2026-4929 have an EU (EUVD) identifier?: Yes. CVE-2026-4929 is tracked in the ENISA EU Vulnerability Database (EUVD) as EUVD-2026-31381.
When was CVE-2026-4929 published?: CVE-2026-4929 was published on 2026-05-21 and last updated on 2026-06-17.

References

Affected products (1)

cpe:2.3:a:simple_hierarchical_select_project:simple_hierarchical_select:*:*:*:*:*:drupal:*:*

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