CVE-2026-28812

Analyzed Analyzed - Analysis Complete

Privilege Escalation via Impersonation in Apache JSPWiki

Publication date: 2026-07-30

Last updated on: 2026-08-05

Assigner: Apache Software Foundation

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.

CVSS Scores

EPSS Scores

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Meta Information

Published

2026-07-30

Last Modified

2026-08-05

Generated

2026-08-20

AI Q&A

2026-07-31

EPSS Evaluated

2026-08-19

NVD

CVE-2026-28812

EUVD

EUVD-2026-51179

Affected Vendors & Products

Vendor	Product	Version / Range
apache	jspwiki	to 2.12.4 (exc)

Helpful Resources

Exploitability

CWE

KEV

CWE ID	Description
CWE-290	This attack-focused weakness is caused by incorrectly implemented authentication schemes that are subject to spoofing attacks.

Attack-Flow Graph

Executive Summary

The vulnerability in Apache JSPWiki up to version 2.12.3 is due to insufficient checks in UserManager, allowing attackers to impersonate users and potentially escalate privileges.

Detection Guidance

This vulnerability involves privilege escalation due to lack of checks in UserManager in Apache JSPWiki. To detect it, verify the installed version of Apache JSPWiki. If it is 2.12.3 or older, the system is vulnerable. Check for unauthorized privilege changes or impersonation attempts in logs.

Impact Analysis

Attackers could exploit this to gain unauthorized access to user accounts or elevate their privileges, leading to potential data breaches or unauthorized actions within the system.

Compliance Impact

This vulnerability could lead to unauthorized access or data breaches, which may violate compliance requirements under GDPR or HIPAA, potentially resulting in legal penalties or reputational damage.

Mitigation Strategies

Upgrade Apache JSPWiki to version 2.12.4 or newer to address the lack of checks allowing impersonation and privilege escalation.

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