CVE-2026-44961

Published Jun 23, 2026 CVSS 3.0 · 0 Low EPSS < 1% KEV · Not listed
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.

Remediation

No solution or workaround provided in the CVE record

Tracking

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Advisories

No advisories available
References
History
Type Values Removed Values Added
Title XML‑RPC addUser Validation Bypass Enables Impersonation and Stored XSS
Type Values Removed Values Added
Title XML‑RPC addUser Validation Bypass Enables Impersonation and Stored XSS
Type Values Removed Values Added
Title XML‑RPC API addUser Validation Bypass Enabling Impersonation and Stored XSS
Type Values Removed Values Added
Title XML‑RPC API addUser Validation Bypass Enabling Impersonation and Stored XSS
Type Values Removed Values Added
Title XML‑RPC API addUser Validation Bypass in Revive Adserver Allows User Impersonation and Stored XSS
Type Values Removed Values Added
First Time appeared Revive
Revive adserver
Vendors & Products Revive
Revive adserver
Type Values Removed Values Added
Title XML‑RPC API addUser Validation Bypass in Revive Adserver Allows User Impersonation and Stored XSS
Type Values Removed Values Added
Metrics ssvc

{'options': {'Automatable': 'yes', 'Exploitation': 'none', 'Technical Impact': 'partial'}, 'version': '2.0.3'}

Type Values Removed Values Added
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.
Weaknesses CWE-287
References
Metrics cvssV3_0

{'score': 0, 'vector': 'CVSS:3.0/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:N'}

Weaknesses

Sources

Status
PUBLISHED
Assigner
hackerone
Published
Updated
Jun 23, 2026, 5:44 PM
Reserved
May 8, 2026, 3:00 PM
Status
Deferred
Published
Jun 23, 2026, 5:17 PM
Modified
Oct 26, 2026, 11:10 AM