Kalles Addons permits Subscriber-level XSS

Kalles Addons through 1.0.6 allows a Subscriber to inject script into affected output. The script executes when another user interacts with that output and can act within the victim's browser session.

CVE / CNA score 6.5 CVSS 3.1 · audit@patchstack.com

NVD score Pending NVD has not published its own CVSS assessment.

Component: Kalles Addons
Plugin slug: kalles-addons
Affected: n/a through 1.0.6
Safe version: See mitigation notes
Published: Aug 31, 2026
Weakness: CWE-79 — Improper Neutralization of Input During Web Page Generation ('Cross-site Scripting')

This CVE was published Aug 31, 2026 and is one of 3 known issues for this plugin.

What to do

Update, patch or deactivate.

No fixed release is identified. Restrict or disable the affected functionality when warranted and review content created by Subscriber accounts.

No confirmed safe version is listed. Consider a vendor-supported patch or temporarily restricting the affected functionality while you assess the risk.

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.

Source record

Technical description

Subscriber Cross Site Scripting (XSS) in Kalles Addons <= 1.0.6 versions.

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

References

Primary and upstream sources

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