Vulnerability · Published Sep 16, 2026 · Assigned by WPScan

CVE-2026-84829Optimole < 4.2.12 - Unauthenticated Stored XSS via Srcset Descriptor Parameter

High 8.8

In plain English

A high-severity cross-site scripting in Optimole from Unknown. There are no confirmed reports of exploitation so far. The chance it is exploited in the next 30 days is estimated at 0.5% (higher than 43% of all known vulnerabilities).

Severity (CVSS 3.1)8.8High

Exploit odds (30 days)0.5%top 56.7% of all CVEs

Exploited in the wildNo reportsCISA SSVC: none

Attack toolingNoneno public tooling known

Official 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.

Affected products (as reported)

Vendor	Product	Versions
Unknown	Optimole	4.2.3 – before 4.2.12

Weakness: CWE-79 · Vector: CVSS:3.1/AV:N/AC:L/PR:N/UI:R/S:U/C:H/I:H/A:H

References

https://wpscan.com/vulnerability/c8489eb1-e767-4b19-a7c0-124eab843d9e/ exploit, vdb-entry, technical-description