CVE-2026-84829
Received Received - Intake

Stored XSS in Optimole WordPress Plugin

Publication date: 2026-09-16

Last updated on: 2026-09-16

Assigner: WPScan

Description
The Optimole WordPress plugin before 4.2.12 does not properly escape a user supplied value before using it to build an image tag attribute, allowing unauthenticated users to inject arbitrary attributes into pages served to every visitor, which leads to Stored Cross-Site Scripting.

CVSS Scores

EPSS Scores

Probability:
Percentile:

Meta Information

Published
2026-09-16
Last Modified
2026-09-16
Generated
2026-10-06
AI Q&A
2026-09-16
EPSS Evaluated
2026-10-05
NVD
CVE-2026-84829
EUVD
EUVD-2026-80191

Affected Vendors & Products

Showing 1 associated CPE
Vendor Product Version / Range
optimole optimole to 4.2.12 (exc)

Helpful Resources

Exploitability

CWE
CWE Icon
KEV
KEV Icon
CWE ID Description
CWE-UNKNOWN

Attack-Flow Graph

AI Quick Actions

Instant insights powered by AI
Executive Summary

The Optimole WordPress plugin before version 4.2.12 has a flaw where user-supplied values are not properly escaped before being used in image tag attributes. This allows unauthenticated attackers to inject malicious attributes into pages viewed by all visitors, enabling stored cross-site scripting (XSS) attacks.

Detection Guidance

Check the installed version of the Optimole WordPress plugin. If it is below 4.2.12, the system is vulnerable. Use commands like 'wp plugin list' in WordPress CLI or inspect the plugin files directly.

Impact Analysis

This vulnerability allows attackers to inject malicious scripts into your website, which can steal user data, hijack sessions, or deface pages. All visitors to your site could be affected, and the attack persists even after the page is reloaded.

Compliance Impact

This vulnerability could lead to data breaches, violating GDPR and HIPAA requirements for protecting user data. It may result in legal penalties, reputational damage, and loss of trust due to unauthorized access to sensitive information.

Mitigation Strategies

Update the Optimole plugin to version 4.2.12 or later immediately. If updating is not possible, consider disabling the plugin temporarily until an update is applied.

Chat Assistant

Ask questions about this CVE
Hi! I’m here to help you understand CVE-2026-84829. Ask me anything about the vulnerability, its impact, or mitigation strategies.
0/70

EPSS Chart