CVE-2026-28812

Apache JSPWiki: UserManager does not sanity-check user database at startup

State: Published
Severity: 9.8 Critical
Published: Jul 30, 2026
Updated: Jul 31, 2026
Reserved: Mar 3, 2026

Description

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.

Scores

CVSS	Score	Vector	Source
3.1	9.8 Critical	CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H	CISA-ADP

Weaknesses

CWE-290 Authentication Bypass by Spoofing

Affected Products

Product	Versions
Apache JSPWikiApache Software Foundation	before 2.12.4Affected

References

https://lists.apache.org/thread/n3m666d6t6871dldvz3ct49ooqkbgw2pvendor-advisory
http://www.openwall.com/lists/oss-security/2026/07/30/15

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