CVE-2026-109987CWE-79cross-site-scripting

CVE-2026-109987

High · published October 22, 2026

CVSS v3.1
7.2
EPSS
0%
Percentile
6.4
In the wild
Unconfirmed
What it is

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.

The record
Technical detail
CVSS v3.1
7.2 · HIGH
Vector
CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:C/C:L/I:L/A:N
CVSS v4.0
Not supplied
EPSS
0.00173 · 6.4th percentile
Weakness
CWE-79 · Improper Neutralization of Input During Web Page Generation ('Cross-site Scripting')
Published
2026-10-22T10:17Z
References (1)
https://wpscan.com/vulnerability/80e1ed6d-dec5-4bfd-851d-3905fd42d23f/ · [email protected]
EPSS history
Timeline
  • 23 OCT 03:54Z
    EPSS moved — → 0%
    epss
  • 22 OCT 06:00Z
    PixelYourSite (Free & Pro) - Unauthenticated Stored XSS via Cookie
    cvelistv5
  • 22 OCT 06:00Z
    PixelYourSite (Free & Pro) - Unauthenticated Stored XSS via Cookie
    cvelistv5