Impersonation Vulnerability in Apache JSPWiki by Apache
CVE-2026-28812

9.8CRITICAL

Key Information:

Vendor

Apache
Status
Apache Jspwiki
Vendor
CVE Published:
30 July 2026

What is CVE-2026-28812?

The UserManager component in Apache JSPWiki versions up to 2.12.3 is susceptible to an impersonation vulnerability due to insufficient validation checks. This flaw enables attackers to potentially escalate user privileges, compromising the integrity of user management within the application. It is strongly recommended that users upgrade to version 2.12.4 or later to mitigate this security risk.

Affected Version(s)

Apache JSPWiki 0 < 2.12.4

References

https://lists.apache.org/thread/n3m666d6t6871dldvz3ct49oo...
vendor-advisory

CVSS V3.1

Score:
9.8
Severity:
CRITICAL
Confidentiality:
High
Integrity:
High
Availability:
High
Attack Vector:
Network
Attack Complexity:
Low
Privileges Required:
None
User Interaction:
None
Scope:
Unchanged

Timeline

  • Vulnerability published

  • Vulnerability Reserved

Credit

Florian Holeczek from Apache JSPWiki
.