CVE-2026-2987

Simple Ajax Chat <= 20260217 - Unauthenticated Stored Cross-Site Scripting via 'c'

mediumImproper Neutralization of Input During Web Page Generation ('Cross-site Scripting')

6.1

CVSS Score

6.1

CVSS Score

medium

Severity

20260301

Patched in

Time to patch

Description

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.

CVSS Vector Breakdown

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

Attack Vector

Network

Attack Complexity

Low

Privileges Required

None

User Interaction

Required

Scope

Changed

Low

Confidentiality

Low

Integrity

None

Availability

Technical Details

Affected versions<=20260217

PublishedMarch 12, 2026

Last updatedMarch 12, 2026

Affected pluginsimple-ajax-chat

References

https://www.wordfence.com/threat-intel/vulnerabilities/id/3c07dec6-ddb7-45df-8bdf-57f562102c4b?source=api-prod

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