Apache JSPWiki 2.12.3 UserManager Impersonation (CVE-2026-28812)
CVE-2026-28812 Published on July 30, 2026
Apache JSPWiki: UserManager does not sanity-check user database at startup
UserManager lack of checks allows impersonation in Apache JSPWiki up to 2.12.3 which may allow attackers to escalate privileges.
Users are recommended to upgrade to version 2.12.4 or newer which fixes this issue.
Vulnerability Analysis
CVE-2026-28812 is exploitable with network access, and does not require authorization privileges or user interaction. This vulnerability is considered to have a low attack complexity. The potential impact of an exploit of this vulnerability is considered to be critical as this vulnerability has a high impact to the confidentiality, integrity and availability of this component.
Weakness Type
Authentication Bypass by Spoofing
This attack-focused weakness is caused by improperly implemented authentication schemes that are subject to spoofing attacks.
Products Associated with CVE-2026-28812
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Affected Versions
Apache Software Foundation Apache JSPWiki:- Before 2.12.4 is affected.