PixelYourSite (Free & Pro) - Unauthenticated Stored XSS via Cookie
CVSS score
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EPSS probability
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Risk score
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Published
3 h ago
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Impact on My Inventory
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Vulnerability description
DayBreach AI Explanation
Verified against sourcesSources read
2
Source agreement
Tam uyum
Evidence confidence
%61
Short explanation
PixelYourSite plugin versions prior to 11.4.3 (Free) and 12.6.8 (Pro) do not sanitise cookie values before output, allowing an unauthenticated stored XSS on sites using full‑page caching (CVE‑2026‑109987).
An attacker can inject malicious script into cached pages and execute it in visitors’ browsers.
What should be done?
- Apply the vendor‑released update when available
- Monitor vendor advisory for fixed version information
- Disable full‑page caching for pages that include untrusted data
- Implement proper input sanitisation and output escaping
- Scan web application for malicious XSS payloads
The sources give limited detail on some technical conditions. Review the chain of evidence below before deciding how to act.
Chain of evidence and sources
CVE‑2026‑109987, PixelYourSite Free 11.4.3 ve öncesi ve PixelYourSite Pro 12.6.8 ve öncesi sürümlerinde kimlik doğrulaması gerektirmeyen depolanmış XSS açığıdır.
Yama durumu UNKNOWN olarak rapor edilmiştir; resmi bir yama doğrulanmamıştır.
CVE, CISA KEV listesinde yer almamaktadır, bu da bilinen aktif istismar olmadığını gösterir.
Show the technical text from the sources
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.
This explanation was compiled automatically from the source records. Scores, active exploitation, patch and exploit status come straight from the sources.
IMPACT: Affected Products and Software
RED HAT CSAF/VEX: Product Impact Check
SCORING: CVSS from Multiple Sources
CVSS Scores
The Common Vulnerability Scoring System is a standardised framework for assessing the severity of vulnerabilities in software and systems. We collect and display CVSS scores from several sources for each CVE.
| SCORE | VERSION | SEVERITY | VECTOR | SOURCE |
|---|---|---|---|---|
| The sources have not yet published a verified CVSS metric. | ||||
Patch and Remediation Guide
Solution & Remediation Advisory
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Public exploit and active exploitation status
Verified exploit intelligence
No verified public PoC, exploit repository or Metasploit module has been found for this CVE yet.
Weakness Classification and Attack Patterns (CWE & CAPEC)
CWE - Common Weakness Enumeration
While CVE identifies specific instances of vulnerabilities, CWE categorises the common flaws or weaknesses that can lead to vulnerabilities. CVE-2026-109987 is associated with the following CWEs:
Common Attack Pattern Enumeration and Classification (CAPEC)
Common Attack Pattern Enumeration and Classification (CAPEC) stores attack patterns, which are descriptions of the common attributes and approaches employed by adversaries to exploit the CVE-2026-109987 weaknesses.
Official Sources and Advisories
Yama durumu bilinmiyor
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