What is CVE-2026-2987?

CVE-2026-2987 is a medium-severity vulnerability in Specialk Simple Ajax Chat – Add A Fast, Secure Box, classified under Cross-site Scripting. CVSS score: 6.1/10. Published 2026-03-12.

How severe is CVE-2026-2987?

Medium severity. CVSS v3 base score is 6.1 out of 10.

XSS in Specialk Simple Ajax Chat – Add A Fast, Secure Box

CVE-2026-2987

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.

Vulnerability class: XSS (Cross-Site Scripting)

EPSS: 0.002 (6.9th percentile) — read the EPSS interpretation.

CVSS v3 metric

CVSS v3 base score 6.1 (Medium). Vector: CVSS:3.1/AV:N/AC:L/PR:N/UI:R/S:C/C:L/I:L/A:N.

Affected products

Specialk Simple Ajax Chat – Add A Fast, Secure Box — versions 0

Weakness classification (CWE)

CWE-79 — Cross-site Scripting

References

Frequently asked questions

What is CVE-2026-2987?: CVE-2026-2987 is a medium-severity vulnerability in Specialk Simple Ajax Chat – Add A Fast, Secure Box, classified under Cross-site Scripting. CVSS score: 6.1/10. Published 2026-03-12.
How severe is CVE-2026-2987?: Medium severity. CVSS v3 base score is 6.1 out of 10.