CVE-2026-28814

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Arbitrary Wiki Markup Rendering in Apache JSPWiki

Publication date: 2026-07-30

Last updated on: 2026-07-30

Assigner: Apache Software Foundation

Description

Arbitrary Wiki Markup rendering due to lack of authentication in Apache JSPWiki up to 2.12.3 allows attacker to obtain sensitive data stored in JSPWiki variables. Users are recommended to upgrade to version 2.12.4 or 3.0.0, which fixes this issue.

CVSS Scores

EPSS Scores

Probability:
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Meta Information

Published

2026-07-30

Last Modified

2026-07-30

Generated

2026-07-31

AI Q&A

2026-07-31

EPSS Evaluated

N/A

NVD

CVE-2026-28814

EUVD

EUVD-2026-51181

Affected Vendors & Products

Vendor	Product	Version / Range
apache	jspwiki	to 2.12.4 (inc)
apache	jspwiki	to 3.0.0 (inc)

Helpful Resources

Exploitability

CWE

KEV

CWE ID	Description
CWE-UNKNOWN

Attack-Flow Graph

Executive Summary

This vulnerability allows an attacker to render arbitrary Wiki Markup without authentication in Apache JSPWiki versions up to 2.12.3. This can lead to exposure of sensitive data stored in JSPWiki variables.

Detection Guidance

Check Apache JSPWiki version. If running 2.12.3 or earlier, the system is vulnerable. Use commands like 'curl -s http://[target]/JSPWiki/ | grep -i version' or inspect server logs for JSPWiki version details.

Impact Analysis

An attacker could exploit this to access confidential information stored in JSPWiki variables, potentially leading to data breaches or unauthorized access to sensitive data.

Compliance Impact

This vulnerability could result in non-compliance with GDPR or HIPAA due to unauthorized access to personal or health-related data, potentially leading to legal penalties and reputational damage.

Mitigation Strategies

Upgrade Apache JSPWiki to version 2.12.4 or 3.0.0 immediately. If upgrading is not possible, restrict access to the JSPWiki application or disable it until the update is applied.

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