CVE-2026-2987
Simple Ajax Chat <= 20260217 - Unauthenticated Stored Cross-Site Scripting via 'c'
CVSS Score
6.1
EPSS Score
0.0%
EPSS Percentile
0th
The Simple Ajax Chat plugin for WordPress is vulnerable to Stored Cross-Site Scripting via the 'c' parameter in versions up to, and including, 20260217 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 a user accesses an injected page.
| CWE | CWE-79 |
| Vendor | specialk |
| Product | simple ajax chat – add a fast, secure chat box |
| Published | Mar 12, 2026 |
| Last Updated | Apr 8, 2026 |
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CVSS v3 Breakdown
CVSS:3.1/AV:N/AC:L/PR:N/UI:R/S:C/C:L/I:L/A:N Attack Vector
Attack Complexity
Privileges Required
User Interaction
Scope
Confidentiality
Integrity
Availability
Affected Versions
specialk / Simple Ajax Chat – Add a Fast, Secure Chat Box
0 ≤ 20260217
References
Credits
Kazuma Matsumoto