CVE-2026-81825: Simple Ajax Chat (WordPress plugin) · Cross-site Scripting
Affects Simple Ajax Chat (WordPress plugin)Source CVE Database V5
Not known to be exploited · CVSS 7.2 High.
Data as of 26 Oct 2026, 17:16 UTC
- EPSS
- 0.4% chance of exploitation in 30 days – higher than 41% of CVEsExploit Prediction Scoring System: the likelihood attackers will use this flaw soon.
CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:C/C:L/I:L/A:NExploitation evidence
Disclosed: evidence found.
CVE published 11 Sep 2026
Detectable: no evidence on record.
No public nuclei template indexed
Weaponised: no evidence on record.
No public exploit code indexed in Metasploit or Exploit-DB
Exploited in the wildExploited: no evidence on record.
Not in CISA KEV and no source reports exploitation
Observed by OffSeq MirageSeen by Mirage: no evidence on record.
No attack traffic recorded by OffSeq Mirage sensors
A missing step is not evidence of safety. Sources: cve.org (opens in a new tab), the Metasploit, Exploit-DB and nuclei-templates index as of 26 Oct 2026.
What to do
Affected software
| Product | Affected | Fixed in |
|---|---|---|
| specialkSimple Ajax Chat – Add a Fast, Secure Chat Box | Affected
| Fixed in– |
AI-suggested
Users should monitor the vendor advisory for updates. Until a fix is released, consider disabling the plugin or restricting access to the chat feature to trusted users only to reduce exposure.
Description
The Simple Ajax Chat – Add a Fast, Secure Chat Box plugin for WordPress is vulnerable to Stored Cross-Site Scripting via Chat Message in all versions up to, and including, <= 20260811 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. The nonce protecting chat message submission is publicly visible on the chat page, rendering it ineffective as an authentication barrier and allowing fully unauthenticated attackers to submit malicious messages that are stored persistently and rendered to all visitors on every page load.
References
- wordfence.com/threat-intel/vulnerabilities/id/8336d8d6-81ac-40a6-af1e-167c12440908?source=cve (opens in a new tab)
- plugins.trac.wordpress.org/browser/simple-ajax-chat/trunk/simple-ajax-chat-form.php (opens in a new tab)
- plugins.trac.wordpress.org/browser/simple-ajax-chat/trunk/simple-ajax-chat-form.php (opens in a new tab)
- plugins.trac.wordpress.org/browser/simple-ajax-chat/trunk/simple-ajax-chat-form.php (opens in a new tab)
- plugins.trac.wordpress.org/browser/simple-ajax-chat/trunk/simple-ajax-chat-core.php (opens in a new tab)
- plugins.trac.wordpress.org/browser/simple-ajax-chat/trunk/simple-ajax-chat.php (opens in a new tab)
- plugins.trac.wordpress.org/browser/simple-ajax-chat/trunk/simple-ajax-chat.php (opens in a new tab)
- plugins.trac.wordpress.org/changeset?sfp_email=&sfph_mail=&reponame=&new=3669278%40simple-ajax-chat%2Ftrunk&old=3640838%40simple-ajax-chat%2Ftrunk&sfp_email=&sfph_mail= (opens in a new tab)