CVE-2026-81778 MEDIUM

CVE-2026-81778: WordPress Kalles Addons plugin <= 1.0.6 - Cross Site Scripting (XSS) vulnerability

Vendor The4

Product Kalles Addons

Weakness CWE-79 · XSS

Published August 31, 2026

Last update September 1, 2026

View on NVD All CVEs

CVSS base score

6.5/10

Attack vector Network

Attack complexity Low

Privileges required Low

User interaction Required

Confidentiality Low

Integrity Low

CVSS vector

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

What the vulnerability does

01Description

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

Explanation of Vulnerability in Simple Terms

02Summary

Kalles Addons versions up to 1.0.6 contain a stored cross-site scripting (XSS) vulnerability. An attacker with low-level user privileges can inject malicious scripts that execute in other users' browsers when they view affected pages. The vulnerability requires user interaction and can affect the confidentiality, integrity, and availability of the site.

What an attacker can do

03Attacker Capabilities

Inject malicious scripts that run in other users' browsers and steal data or perform actions on their behalf.

Potential impact on your site

04Site Impact

Users' sessions can be compromised, data stolen, or site functionality disrupted through malicious scripts injected by low-privilege accounts.

Conditions required to exploit

05Prerequisites

Attacker needs a low-privilege user account and the victim must view a page containing the injected script.

Key dates

06Disclosure timeline

August 31, 2026 CVE published

September 1, 2026 Record updated

External resources

07References

NVD — National Vulnerability Database https://nvd.nist.gov/vuln/detail/CVE-2026-81778 CWE — Common Weakness Enumeration https://cwe.mitre.org/data/definitions/79.html AskarLabs — CWE-79 write-up Cross-Site Scripting

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