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CVE-2026-44961
WordPress XML-RPC addUser Username Validation Bypass
Overview
Description

The XML‑RPC API addUser method has a validation bypass introduced in the fix for CVE‑2025‑55129. As a result, API users could create usernames that enabled impersonation or stored XSS attacks. Proper validation has been added where it was missing.

Details
INFO

Published Date :

June 23, 2026, 4:14 p.m.

Last Modified :

June 23, 2026, 4:14 p.m.

Remotely Exploit :

No

Source :

hackerone
Impact
Affected Products

The following products are affected by CVE-2026-44961 vulnerability. Even if cvefeed.io is aware of the exact versions of the products that are affected, the information is not represented in the table below.

ID Vendor Product Action
1 Revive adserver
: Total Affected Vendor : 1 | Products : 1
Solution
Address API validation bypass to prevent impersonation and XSS attacks.
  • Apply updates to the XML-RPC API.
  • Validate all usernames rigorously.
  • Sanitize user input for XSS.
  • Review access controls and authentication.

We scan GitHub repositories to detect new proof-of-concept exploits. Following list is a collection of public exploits and proof-of-concepts, which have been published on GitHub (sorted by the most recently updated).

Results are limited to the first 15 repositories due to potential performance issues.

The following list is the news that have been mention CVE-2026-44961 vulnerability anywhere in the article.

Results are limited to the first 20 news articles due to potential performance issues.

EPSS is a daily estimate of the probability of exploitation activity being observed over the next 30 days. Following chart shows the EPSS score history of the vulnerability.
CVSS
Vulnerability Scoring Details
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