Plugins · simple-ajax-chat · data as of 2026-11-04
Is Simple Ajax Chat safe? Known vulnerabilities and latest version
- Latest version
- 20260827
- Last updated
- 2026-08-27
- Active installs
- 2,000+
- Known issues on record
- 10
- Unpatched in latest
- 0
- Tested up to WP
- 7.1.4 · PHP 5.6.20+
Display an Ajax-powered chat box anywhere. Lightweight, flexible, fast, and secure. Fully customizable with many options. — by Jeff Starr
What to do
- Update to the latest version (20260827). Anything older than 20260827 has at least one known issue listed below. Dashboard → Updates, or Plugins → “update now”.
- If you cannot update right away, deactivate it until you can.
- Turn on auto-updates for it: Plugins → “Enable auto-updates” on its row.
- If you ran a vulnerable version and something looks off (spam pages, strange admins, redirects), run the free scan.
With WP-CLI: wp plugin get simple-ajax-chat --field=version shows what you run; wp plugin update simple-ajax-chat updates it.
Check your version
Known vulnerabilities
10 on record, newest first. “Affected” is the version range the source gives; “fixed in” is the version the source names, or (marked *) the first wordpress.org release after the last affected version.
high 7.2 CVE-2026-81825 · published 2026-09-11
Stored cross-site scripting (XSS) in Simple Ajax Chat (20260811 and older)
- Affected
- 20260811 and older
- Fixed in
- 20260827 *
- Access needed (per CVSS)
- No login needed
- Range from
- CVE record (the advisory publisher) · score by Wordfence
Details from the advisory
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.
NVD CVE-2026-81825Wordfence advisoryCode change (fix)Plugin source
high 8.8 CVE-2026-81807 · published 2026-09-02
Cross-site scripting (XSS) in Simple Ajax Chat (older than 20260827)
- Affected
- older than 20260827
- Fixed in
- 20260827
- Access needed (per CVSS)
- No login needed; someone on the site has to click a link or open a page
- Range from
- CVE record (the advisory publisher) · score by CISA ADP
Details from the advisory
The Simple Ajax Chat WordPress plugin before 20260827 does not escape chat message content before rendering it, allowing unauthenticated users to inject arbitrary HTML attributes into the page and run scripts in the browser of anyone viewing the chat, including administrators.
medium 6.1 CVE-2026-2987 · published 2026-03-12
Stored cross-site scripting (XSS) in Simple Ajax Chat (20260217 and older)
- Affected
- 20260217 and older
- Fixed in
- 20260225 *
- Access needed (per CVSS)
- No login needed; someone on the site has to click a link or open a page
- Range from
- CVE record (the advisory publisher) · score by Wordfence
Details from the advisory
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.
medium 5.3 CVE-2026-3075 · published 2026-02-23
Information disclosure in Simple Ajax Chat (20251121 and older)
- Affected
- 20251121 and older
- Fixed in
- 20260217
- Access needed (per CVSS)
- No login needed
- Range from
- CVE record (the advisory publisher) · score by Patchstack
Details from the advisory
Exposure of Sensitive System Information to an Unauthorized Control Sphere vulnerability in Jeff Starr Simple Ajax Chat simple-ajax-chat allows Retrieve Embedded Sensitive Data.This issue affects Simple Ajax Chat: from n/a through <= 20251121.
medium 5.4 CVE-2024-2470 · published 2024-06-04
Stored cross-site scripting (XSS) in Simple Ajax Chat (older than 20240412)
- Affected
- older than 20240412
- Fixed in
- 20240412
- Access needed (per CVSS)
- Needs a low-level account (e.g. subscriber); someone on the site has to click a link or open a page
- Range from
- CVE record (the advisory publisher) · score by CISA ADP
Details from the advisory
The Simple Ajax Chat WordPress plugin before 20240412 does not sanitise and escape some of its settings, which could allow high privilege users such as admin to perform Stored Cross-Site Scripting attacks even when the unfiltered_html capability is disallowed (for example in multisite setup)
medium 4.4 CVE-2024-2956 · published 2024-03-27
Stored cross-site scripting (XSS) in Simple Ajax Chat (20231101 and older)
- Affected
- 20231101 and older
- Fixed in
- 20240216 *
- Access needed (per CVSS)
- Needs an admin-level account
- Range from
- CVE record (the advisory publisher) · score by Wordfence
Details from the advisory
The Simple Ajax Chat – Add a Fast, Secure Chat Box plugin for WordPress is vulnerable to Stored Cross-Site Scripting via admin settings in all versions up to, and including, 20231101 due to insufficient input sanitization and output escaping. This makes it possible for authenticated attackers, with administrator-level permissions and above, to inject arbitrary web scripts in pages that will execute whenever a user accesses an injected page. This only affects multi-site installations and installations where unfiltered_html has been disabled.
high 7.1 CVE-2024-1983 · published 2024-03-20
Security issue in Simple Ajax Chat (older than 20240223)
- Affected
- older than 20240223
- Fixed in
- 20240223
- Access needed (per CVSS)
- No login needed; someone on the site has to click a link or open a page
- Range from
- CVE record (the advisory publisher) · score by CISA ADP
Details from the advisory
The Simple Ajax Chat WordPress plugin before 20240223 does not prevent visitors from using malicious Names when using the chat, which will be reflected unsanitized to other users.
high 7.5 CVE-2022-27849 · published 2022-04-15
Information disclosure in Simple Ajax Chat (20220115 and older)
- Affected
- 20220115 and older
- Fixed in
- 20220216 *
- Access needed (per CVSS)
- No login needed
- Range from
- CVE record (the advisory publisher) · score by NVD
Details from the advisory
Sensitive Information Disclosure (sac-export.csv) in Simple Ajax Chat (WordPress plugin) <= 20220115
medium 4.3 CVE-2022-27850 · published 2022-04-15
Cross-site request forgery (CSRF) in Simple Ajax Chat (20220115 and older)
- Affected
- 20220115 and older
- Fixed in
- 20220216 *
- Access needed (per CVSS)
- No login needed; someone on the site has to click a link or open a page
- Range from
- CVE record (the advisory publisher) · score by NVD
Details from the advisory
Cross-Site Request Forgery (CSRF) in Simple Ajax Chat (WordPress plugin) <= 20220115 allows an attacker to clear the chat log or delete a chat message.
medium 6.1 CVE-2022-25610 · published 2022-03-25
Stored cross-site scripting (XSS) in Simple Ajax Chat (20220115 and older)
- Affected
- 20220115 and older
- Fixed in
- 20220216 *
- Access needed (per CVSS)
- No login needed; someone on the site has to click a link or open a page
- Range from
- CVE record (the advisory publisher) · score by NVD
Details from the advisory
Unauthenticated Stored Cross-Site Scripting (XSS) in Simple Ajax Chat <= 20220115 allows an attacker to store the malicious code. However, the attack requires specific conditions, making it hard to exploit.
Recent activity
- 2026-08-27 — latest release on wordpress.org (20260827).
- 2026-09-11 — Stored cross-site scripting (XSS) disclosed (CVE-2026-81825), fixed in 20260827.
- 2026-09-02 — Cross-site scripting (XSS) disclosed (CVE-2026-81807), fixed in 20260827.
- 2026-03-12 — Stored cross-site scripting (XSS) disclosed (CVE-2026-2987), fixed in 20260225.
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Browse vulnerabilities
- Published this week
- Unpatched in the latest version
- By type of vulnerability
- Plugins by Jeff Starr (7 tracked)
Types found in this plugin: Cross-site scripting (XSS) (6) · Sensitive data exposure (2) · Cross-site request forgery (CSRF) (1)
Where this data comes from
- Version, last update, installs: wordpress.org/plugins/simple-ajax-chat (Plugins API), fetched 2026-11-04.
- Vulnerabilities: NIST National Vulnerability Database (NVD), checked 2026-11-04. This product uses data from the NVD API but is not endorsed or certified by the NVD.
- Each record links to its CVE page and to the original advisory (Wordfence, Patchstack or WPScan) where there is one. We only list a CVE here when its references or its advisory name this exact plugin, so a few real issues may be missing; none should be about a different plugin. Spot an error? Email Daniel.
Badge for your site or docs (states facts with a date, not a verdict):
<a href="https://laskyr.com/plugins/simple-ajax-chat"><img src="https://laskyr.com/plugins/simple-ajax-chat/badge.svg" alt="Simple Ajax Chat vulnerability status"></a>