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CVE-2026-115548

Quttera ThreatSign <= 4.1.0.48 - Unauthenticated Stored Cross-Site Scripting via User-Agent Header

7.2 High

The Quttera ThreatSign – Web Malware Scanner for WordPress plugin for WordPress is vulnerable to Stored Cross-Site Scripting via the 'HTTP_USER_AGENT' parameter in all versions up to, and including, 4.1.0.48 due to insufficient input sanitization and output escaping. This makes it possible for unauthenticated attackers to inject arbitrary web scripts in pages that will execute whenever an administrator accesses an injected page.

Attack profile

How easy it is to exploit

Attack vector
Network
Complexity
Low
Privileges needed
None
User interaction
None

What an attacker can affect

Confidentiality
Low
Integrity
Low
Availability
None

What each source reports

CVE List Score used 7.2

Quttera ThreatSign <= 4.1.0.48 - Unauthenticated Stored Cross-Site Scripting via User-Agent Header

The Quttera ThreatSign – Web Malware Scanner for WordPress plugin for WordPress is vulnerable to Stored Cross-Site Scripting via the 'HTTP_USER_AGENT' parameter in all versions up to, and including, 4.1.0.48 due to insufficient input sanitization and output escaping. This makes it possible for unauthenticated attackers to inject arbitrary web scripts in pages that will execute whenever an administrator accesses an injected page.

Record
CVE-2026-115548
CVSS 3.1
7.2 HighCVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:C/C:L/I:L/A:N
Weakness
CWE-79
Updated
2026-11-07
EUVDEUVD-2026-119164 7.2

The Quttera ThreatSign – Web Malware Scanner for WordPress plugin for WordPress is vulnerable to Stored Cross-Site Scripting via the 'HTTP_USER_AGENT' parameter in all versions up to, and including, 4.1.0.48 due to insufficient input sanitization and output escaping. This makes it possible for unauthenticated attackers to inject arbitrary web scripts in pages that will execute whenever an administrator accesses an injected page.

Record
EUVD-2026-119164
CVSS 3.1
7.2 HighCVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:C/C:L/I:L/A:N
Updated
2026-11-07
GitHub AdvisoriesGHSA-45m2-gfv6-r6wq 7.2

The Quttera ThreatSign – Web Malware Scanner for WordPress plugin for WordPress is vulnerable to...

The Quttera ThreatSign – Web Malware Scanner for WordPress plugin for WordPress is vulnerable to Stored Cross-Site Scripting via the 'HTTP_USER_AGENT' parameter in all versions up to, and including, 4.1.0.48 due to insufficient input sanitization and output escaping. This makes it possible for unauthenticated attackers to inject arbitrary web scripts in pages that will execute whenever an administrator accesses an injected page.

Record
GHSA-45m2-gfv6-r6wq
CVSS 3.1
7.2 HighCVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:C/C:L/I:L/A:N
Weakness
CWE-79
Updated
2026-11-07
NVD 7.2

The Quttera ThreatSign – Web Malware Scanner for WordPress plugin for WordPress is vulnerable to Stored Cross-Site Scripting via the 'HTTP_USER_AGENT' parameter in all versions up to, and including, 4.1.0.48 due to insufficient input sanitization and output escaping. This makes it possible for unauthenticated attackers to inject arbitrary web scripts in pages that will execute whenever an administrator accesses an injected page.

Record
CVE-2026-115548
CVSS 3.1
7.2 HighCVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:C/C:L/I:L/A:N
Weakness
CWE-79
Updated
2026-11-07

Affected products

History

History
RecordedChangedSources
publishedEUVD
publishedEUVD, NVD
aliases, referencesGitHub Advisories
cwes, severity, titleCVE List
first indexedEUVD

Dates are when Every CVE recorded each change. Upstream dates may differ.

In short

CVE-2026-115548 is a high vulnerability (CVSS 7.2) in Quttera Threatsign – Web Malware Scanner For Wordpress, published November 7, 2026. No source lists public exploit code. No source names a fixed version.

References

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