Vulnerability · Published Jun 29, 2026 · Assigned by WPScan

CVE-2026-10083APCu Manager < 4.5.0 - Unauthenticated Stored XSS via Cache Key Pollution

High 7.5

In plain English

A high-severity security flaw in APCu Manager from Unknown. There are no confirmed reports of exploitation so far. The chance it is exploited in the next 30 days is estimated at 0.4% (higher than 29% of all known vulnerabilities).

Severity (CVSS 3.1)7.5High

Exploit odds (30 days)0.4%top 71.0% of all CVEs

Exploited in the wildNo reportsCISA SSVC: none

Attack toolingNoneno public tooling known

Official description

The APCu Manager WordPress plugin before 4.5.0 does not escape APCu object-cache keys before rendering them in an admin-area page, leading to a Stored Cross-Site Scripting vulnerability. When a persistent object cache is enabled, cache keys derived from unsanitised user input (e.g. a transient name created by another APCu Manager WordPress plugin before 4.5.0 from an unauthenticated request) are output without escaping and execute arbitrary JavaScript in the session of an administrator viewing the page.

Affected products (as reported)

Vendor	Product	Versions
Unknown	APCu Manager	0 – before 4.5.0

References

https://wpscan.com/vulnerability/e591b3f3-6e21-44f7-b374-4753689532fe/ exploit, vdb-entry, technical-description