Quick answers
- Is CVE-2026-109987 exploited in the wild?
- No. Junglewise Threat Intelligence has no report of CVE-2026-109987 being exploited in the wild.
- How severe is CVE-2026-109987?
- Informational severity, published 22 October 2026.
- Which products and versions are affected?
- PixelYourSite before 11.4.3; PixelYourSite Pro before 12.6.8.
- Is there a fix for CVE-2026-109987?
- Yes: fixed in PixelYourSite 11.4.3; PixelYourSite Pro 12.6.8. Junglewise finds every place you run it, drafts the upgrade and applies it once you approve.
- How is CVE-2026-109987 attacked?
- It is attacked over the network, in a software library.
- Am I affected by CVE-2026-109987?
- Check whether you run PixelYourSite or PixelYourSite Pro 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: PixelYourSite 11.4.3; PixelYourSite Pro 12.6.8
Technical details
The plugin fails to sanitize and escape a cookie value before outputting it to the page. On sites with full-page caching enabled, an attacker can set a malicious cookie containing JavaScript payload that becomes permanently cached and delivered to all subsequent visitors. This is a stored XSS vulnerability requiring network access but no authentication, with high impact once cached.
Affected products
- PixelYourSite PixelYourSite before 11.4.3
- PixelYourSite PixelYourSite Pro before 12.6.8
Timeline
- 2026-10-20: disclosed
- 2026-10-22: advisory