CVE-2026-84829

Optimole < 4.2.12 - Unauthenticated Stored XSS via Srcset Descriptor Parameter

Published Sep 16, 2026 CVSS 3.1 · 8.8 High EPSS < 1% KEV · Not listed
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.

Remediation

No solution or workaround provided in the CVE record

Tracking

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Advisories

No advisories available
History
Type Values Removed Values Added
Metrics cvssV3_1

{'score': 8.8, 'vector': 'CVSS:3.1/AV:N/AC:L/PR:N/UI:R/S:U/C:H/I:H/A:H'}

ssvc

{'options': {'Automatable': 'no', 'Exploitation': 'none', 'Technical Impact': 'total'}, 'version': '2.0.3'}

Type Values Removed Values Added
Weaknesses CWE-79
Type Values Removed Values Added
First Time appeared Optimole
Optimole optimole
Wordpress
Wordpress wordpress
Vendors & Products Optimole
Optimole optimole
Wordpress
Wordpress wordpress
Type Values Removed Values Added
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.
Title Optimole < 4.2.12 - Unauthenticated Stored XSS via Srcset Descriptor Parameter
References
Weaknesses

Sources

Status
PUBLISHED
Assigner
WPScan
Published
Updated
Sep 17, 2026, 12:37 PM
Reserved
Sep 2, 2026, 11:30 AM
Status
Deferred
Published
Sep 16, 2026, 6:16 AM
Modified
Sep 17, 2026, 1:16 PM