CVE-2026-84829

Optimole < 4.2.12 - Unauthenticated Stored XSS via Srcset Descriptor Parameter

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

Optimole

CVSS v3.1 CNA

8.8 HIGHCVSS:3.1/AV:N/AC:L/PR:N/UI:R/S:U/C:H/I:H/A:H

EPSS

0.51% chance of exploitation in the next 30 days, 42nd percentile

Published

2026-09-16

Updated

2026-09-17

Proof-of-concept exploits (1)

• https://wpscan.com/vulnerability/c8489eb1-e767-4b19-a7c0-124eab843d9e/

References

• CVE Record
• NVD entry