Stored Cross-Site Scripting Vulnerability in Quttera ThreatSign Web Malware Scanner for WordPress
CVE-2026-115548

7.2HIGH

Key Information:

Vendor

WordPress
Status
Quttera Threatsign – Web Malware Scanner For WordPress
Vendor
CVE Published:
7 November 2026

What is CVE-2026-115548?

The Quttera ThreatSign – Web Malware Scanner for WordPress plugin is susceptible to a Stored Cross-Site Scripting vulnerability via the 'HTTP_USER_AGENT' parameter. This issue arises from inadequate input sanitization and output escaping, allowing unauthenticated attackers to inject arbitrary web scripts. These malicious scripts can execute when an administrator accesses affected pages, potentially leading to unauthorized actions and data exposure.

Affected Version(s)

Quttera ThreatSign – Web Malware Scanner for WordPress 0 <= 4.1.0.48

References

https://www.wordfence.com/threat-intel/vulnerabilities/id...
https://plugins.trac.wordpress.org/browser/quttera-web-ma...
https://plugins.trac.wordpress.org/browser/quttera-web-ma...

CVSS V3.1

Score:
7.2
Severity:
HIGH
Confidentiality:
Low
Integrity:
Low
Availability:
Low
Attack Vector:
Network
Attack Complexity:
Low
Privileges Required:
None
User Interaction:
None
Scope:
Changed

Timeline

  • Vulnerability published

  • Vulnerability Reserved

Credit

Adrien Brunner
.