CVE-2026-28812 — CRITICAL (9.8)

Q: How severe is CVE-2026-28812?

CVE-2026-28812 has been rated CRITICAL with a CVSS base score of 9.8/10. This is considered a critical vulnerability requiring immediate attention.

Q: Is there a patch for CVE-2026-28812?

Check the references section above for vendor advisories and patch information. Affected products include: Apache Jspwiki.

Vulnerability 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 Score

9.8

CRITICAL

CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H

Attack Vector

NETWORK

Attack Complexity

LOW

Privileges Required

NONE

User Interaction

NONE

Scope

UNCHANGED

Confidentiality

HIGH

Integrity

HIGH

Availability

HIGH

Affected Products

Vendor	Product	Versions
Apache	Jspwiki	< 2.12.4

Related Weaknesses (CWE)

CWE-290

References

https://lists.apache.org/thread/n3m666d6t6871dldvz3ct49ooqkbgw2pMailing ListVendor Advisory
http://www.openwall.com/lists/oss-security/2026/07/30/15Mailing ListThird Party Advisory

FAQ

What is CVE-2026-28812?

CVE-2026-28812 is a vulnerability with a CVSS score of 9.8 (CRITICAL). 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...

How severe is CVE-2026-28812?

CVE-2026-28812 has been rated CRITICAL with a CVSS base score of 9.8/10. This is considered a critical vulnerability requiring immediate attention.

Is there a patch for CVE-2026-28812?

Check the references section above for vendor advisories and patch information. Affected products include: Apache Jspwiki.