# CVE-2026-124262: Igor Funa Ad Inserter XSS in content injection

Source: https://junglewise.ai/threats/cve-2026-124262-improper-neutralization-of-script-related-html-tags-in-a-web  
Publisher: Junglewise Threat Intelligence, https://junglewise.ai/threats  
Published: 2026-11-11. Updated: 2026-11-11  
License: CC BY 4.0 with a link back

CVE-2026-124262 · Severity: medium · CVSS 5.3 · Published 2026-11-11

Ad Inserter is a WordPress plugin that manages advertisement placement on websites. A cross-site scripting (XSS) vulnerability allows attackers to inject malicious scripts into web pages, potentially compromising visitor data or redirecting users to scam sites. The vulnerability affects versions up to 2.8.19 and requires no authentication to exploit.

Technologies: [Igor Funa Ad Inserter](https://junglewise.ai/threats/technologies/ad-inserter). Vendors: [Igor Funa](https://junglewise.ai/threats/vendors/igor-funa).

## Quick answers

**Is CVE-2026-124262 exploited in the wild?** No. Junglewise Threat Intelligence has no report of CVE-2026-124262 being exploited in the wild.

**How severe is CVE-2026-124262?** Medium severity, with a CVSS score of 5.3, published 11 November 2026.

**Which products and versions are affected?** Igor Funa Ad Inserter through 2.8.19.

**Is there a fix for CVE-2026-124262?** Yes: fixed in 2.8.20. Junglewise finds every place you run it, drafts the upgrade and applies it once you approve.

**How is CVE-2026-124262 attacked?** It is attacked over the network, in a software library.

**Am I affected by CVE-2026-124262?** Check whether you run Igor Funa Ad Inserter at an affected version. Junglewise does that check for you around the clock: connect your code, cloud and domains, and it matches new vulnerabilities like this one against what you actually run and tells you when one reaches you.

## How to fix

- Fixed in 2.8.20

## Technical details

The plugin fails to properly sanitize script-related HTML tags in content injection, allowing unauthenticated attackers to inject arbitrary HTML and JavaScript. This improper neutralization of XSS vectors is exploitable via the network with no special preconditions. An attacker can inject malicious ads, scams, or malware links into affected pages.

## Affected products

- Igor Funa Ad Inserter through 2.8.19

## Timeline

- 2026-11-11: disclosed

## References

- [https://wordpress.org/plugins](https://wordpress.org/plugins)
- [https://patchstack.com/database/wordpress/plugin/ad-inserter/vulnerability/wordpress-ad-inserter-plugin-2-8-19-content-injection-vulnerability?_s_id=cve](https://patchstack.com/database/wordpress/plugin/ad-inserter/vulnerability/wordpress-ad-inserter-plugin-2-8-19-content-injection-vulnerability?_s_id=cve)

## Related threats

- [Ad Inserter cross-site scripting in plugin](https://junglewise.ai/threats/cve-2026-105077-unauthenticated-cross-site-scripting-xss-in-ad-inserter-2-8-19)
- [Igor Funa Ad Inserter stored cross-site scripting](https://junglewise.ai/threats/cve-2026-118094-improper-neutralization-of-input-during-web-page-generation)
- [Igor Funa Ad Inserter reflected cross-site scripting](https://junglewise.ai/threats/cve-2026-114709-improper-neutralization-of-input-during-web-page-generation)
- [Igor Funa Ad Inserter reflected XSS in plugin settings](https://junglewise.ai/threats/cve-2026-114194-improper-neutralization-of-input-during-web-page-generation)
- [Igor Funa Ad Inserter stored cross-site scripting](https://junglewise.ai/threats/cve-2026-107864-improper-neutralization-of-input-during-web-page-generation)