WordPress security changelog
MEDIUM CVE-2026-57656 Deferred

Hester Core: Cross-site scripting

Hester Core is affected by cross-site scripting. Exposure depends on how the affected operation is made reachable by the site. Injected script can execute in the affected site's origin when the vulnerable output is viewed. The published affected range is n/a through 1.1.8.

CVE / CNA score 5.9 CVSS 3.1 · audit@patchstack.com
NVD score Pending NVD has not published its own CVSS assessment.
Component
Hester Core
Plugin slug
hester-core
Affected
n/a through 1.1.8
Safe version
1.1.9
Published
Jun 26, 2026
Weakness
CWE-79 — Improper Neutralization of Input During Web Page Generation ('Cross-site Scripting')

This CVE was published Jun 26, 2026 and is one of 1 known issue for this plugin.

Update, patch or deactivate.

Update Hester Core to 1.1.9 or later, or disable and remove it until a fixed version is available.

A safe version is available, so updating to that version or later is the preferred remediation. If an immediate update is not practical, consider a targeted application patch or temporarily restricting the affected functionality.

Deactivate only when warranted by your risk profile, or when advised by your hosting provider in the limited circumstances where the vulnerability cannot otherwise be mitigated. If you’re unsure which action is appropriate, contact Fused or your hosting provider for guidance.

Technical description

Author Cross Site Scripting (XSS) in Hester Core <= 1.1.8 versions.

CVE / CNA vector: CVSS:3.1/AV:N/AC:L/PR:H/UI:R/S:C/C:L/I:L/A:L

Primary and upstream sources