High severity · published Oct 22, 2026
CVE-2026-109987
PixelYourSite (Free & Pro) - Unauthenticated Stored XSS via Cookie
New
7.2
CVSS
0.2%
EPSS
No
On KEV
Description
The PixelYourSite WordPress plugin before 11.4.3, PixelYourSite Pro WordPress plugin before 12.6.8 do not sanitise and escape a cookie value before printing it into the page output, which, on a site running a full-page cache, allows unauthenticated attackers to store a Cross-Site Scripting payload in the cached page that is then served to other visitors.
CVSS vector
CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:C/C:L/I:L/A:N
Attack vector
Network
Complexity
Low
Privileges
None
User interaction
None
Confidentiality
Low
Integrity
Low
Availability
None
Scope
Changed
Exploitation
Is it being used?
Exploit prediction (EPSS)0.2% · higher than 15% of CVEs
Exploited in the wildNo evidence yet
CISA KEVNot listed
Ransomware campaign useNot known
Affected products
Which versions
PI
PixelYourSite ·
before 11.4.3 · source: vendor
PP
PixelYourSite Pro ·
before 12.6.8 · source: vendor
References
NVD
https://nvd.nist.gov/vuln/detail/CVE-2026-109987
CVE.org
https://www.cve.org/CVERecord?id=CVE-2026-109987
wpscan.com
https://wpscan.com/vulnerability/80e1ed6d-dec5-4bfd-851d-3905fd42d23f/
More from PixelYourSite
2.7
CVE-2025-10723
PixelYourSite < 11.1.2 - Admin+ LFI