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CVE-2026-28814: Apache JSPWiki: Arbitrary Wiki Markup rendering due to lack of authentication

From: Juan Pablo Santos Rodríguez <juanpablo () apache org>
Date: Thu, 30 Jul 2026 14:14:47 +0200

Severity
Critical

Vendor
The Apache Software Foundation

Versions Affected
Apache JSPWiki up to 2.12.3

Description
Arbitrary Wiki Markup rendering due to lack of authentication in
Apache JSPWiki allows attacker to obtain sensitive data stored in
JSPWiki variables.

Mitigation
Apache JSPWiki users should upgrade to 2.12.4 or later.

Credit
The issue was discovered by Miguel Regala (Fisher) - Hadrian.io


References
https://jspwiki-wiki.apache.org/Wiki.jsp?page=CVE-2026-28814
https://www.cve.org/CVERecord?id=CVE-2026-28814

Current thread:

CVE-2026-28814: Apache JSPWiki: Arbitrary Wiki Markup rendering due to lack of authentication Juan Pablo Santos Rodríguez (Jul 30)