CVE-2025-8621 - CVE House
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Status published Medium CVE-2025-8621

Mosaic Generator <= 1.0.5 - Authenticated (Contributor+) Stored Cross-Site Scripting via 'c' Parameter

Vulnerability Description

The Mosaic Generator plugin for WordPress is vulnerable to Stored Cross-Site Scripting via the ā€˜cā€™ parameter in all versions up to, and including, 1.0.5 due to insufficient input sanitization and output escaping. This makes it possible for authenticated attackers, with Contributor-level access and above, to inject arbitrary web scripts in pages that will execute whenever a user accesses an injected page.

Impact Analysis

Refer to official advisory for detailed impact metrics.

Remediation

Ensure systems are updated to the latest vendor-supplied patch levels.

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Credits & Attribution

The following person or organization is credited with identifying this vulnerability, as recorded in the NVD database:

  • Muhammad Yudha - DJ

References

Affected Vendor

Affected Software

Mosaic Generator
Vulnerable Versions:
0

Timeline

Official Publish: August 12th, 2025
Last Modified: April 8th, 2026
Added to House: July 22nd, 2026

CVSS Vectors

V3: CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:C/C:L/I:L/A:N

Weaknesses (CWE)

CWE-80

MITRE ATT&CK TTPs

T1189 Drive-by Compromise
Initial Access
T1059 Command and Scripting Interpreter
Execution
T1552 Unsecured Credentials
Credential Access
T1071 Application Layer Protocol
Command and Control
T1565 Data Manipulation
Impact