CriticalVulnerabilityCVE-2026-61991updated 29 Oct 2026, 20:04 UTC

AjaxLoadMore Cache WordPress plugin lets attackers run code without logging in

A flaw in this WordPress plugin lets anyone on the internet send a request that makes the website run commands they choose, without needing a password. An attacker could take over the site.

Official, 2 sources

Severity	CriticalCVSS 10 of 10
Being exploited?	UnclearNo reports either way yet
Fix available?	UnclearNo fixed version published in the sources yet
How sure is this?	Official, 2 sourcesBacked by an official source

What happened

AjaxLoadMore Cache versions up to and including 3.1.1 contain an unauthenticated remote code execution vulnerability, allowing unauthenticated remote attackers to execute code on the server.

Why it is dangerous: Successful exploitation gives an attacker control over the web server, which can expose or alter site data, install malware, or use the site for further attacks. Any site running the affected plugin is at risk.

Are you affected?

You are affected if your WordPress site has the AjaxLoadMore Cache plugin installed at version 3.1.1 or earlier.

AjaxLoadMore Cache plugin for WordPress, versions <= 3.1.1

What to do

Check whether AjaxLoadMore Cache is installed and note its version
Deactivate and remove the plugin if it is version 3.1.1 or earlier, unless a fixed version is confirmed
Update to a fixed version as soon as the vendor releases one, and check the advisory for updates
Review the server for unexpected files or activity if the plugin was running before this was known

Timeline

29 Oct 2026, 16:18 UTC
Publicly disclosed
29 Oct 2026, 16:18 UTC
Reported by NVD · NVD
29 Oct 2026, 16:20 UTC
Picked up by Zero Radar
29 Oct 2026, 20:04 UTC
GitHub Advisory reported on it · GitHub Advisory

Sources 2 reports, oldest first

Official vendor, government CERT or advisory database

CVE-2026-61991NVD · 29 Oct 2026, 16:18 UTC
Unauthenticated Remote Code Execution (RCE) in AjaxLoadMore Cache <= 3.1.1 versions.GitHub Advisory · 29 Oct 2026, 18:31 UTC

Technical details

ID: CVE-2026-61991 · GHSA-223g-4gxp-mmx2
CVSS: 10 / 10
EPSS: 0.7% chance of exploitation within 30 days
Disclosed: 29 Oct 2026, 16:18 UTC
On Zero Radar: 29 Oct 2026, 16:20 UTC (2 min after disclosure)
Last change: 29 Oct 2026, 20:04 UTC

The plain-language parts and the attack diagram were written by an AI model (anthropic/claude-haiku-5.5) from the sources above. Facts like versions, exploitation and dates come from the sources themselves. How Zero Radar works