Ad Inserter: Cross-site scripting
Unauthenticated Cross Site Scripting (XSS) in Ad Inserter <= 2.8.18 versions. The reported impact is browser script execution in the affected site's origin. The injected field, rendering context and exact victim interaction are unspecified. The authoritative export does not identify the vulnerable endpoint, action, parameter or function, so the precise input-to-operation path cannot be established from this snapshot. The authoritative export identifies the fixed release as 2.8.19.
- Component
- Ad Inserter
- Plugin slug
ad-inserter- Affected
- n/a through 2.8.18
- Safe version
2.8.19- Published
- Sep 30, 2026
This CVE was published Sep 30, 2026 and is one of 17 known issues for this plugin.
Update, patch or deactivate.
Update Ad Inserter to 2.8.19 or a later supported release. An application-level fix should validate stored/request input and escape it for the final HTML, attribute, URL or DOM context. Remove persisted malicious content where storage is involved.
A safe version is available, so updating to that version or later is the preferred remediation. If an immediate update is not practical, consider a targeted application patch or temporarily restricting the affected functionality.
Deactivate only when warranted by your risk profile, or when advised by your hosting provider in the limited circumstances where the vulnerability cannot otherwise be mitigated. If you’re unsure which action is appropriate, contact Fused or your hosting provider for guidance.
Technical description
Unauthenticated Cross Site Scripting (XSS) in Ad Inserter <= 2.8.18 versions.
CVE / CNA vector: CVSS:3.1/AV:N/AC:L/PR:N/UI:R/S:C/C:L/I:L/A:L