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CVE-2026-28812

Apache Jspwiki authentication bypass

9.8 CRITICALEPSS 0.69%
  1. Published30 Jul 2026

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 3.1 breakdown

Attack vectorNetwork
Attack complexityLow
Privileges requiredNone
User interactionNone
ScopeUnchanged
ConfidentialityHigh
IntegrityHigh
AvailabilityHigh
CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H

Affected products

Apache Jspwiki< 2.12.4

Remediation

Fixed in
Apache Jspwiki≥ 2.12.4

References

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Frequently asked

Is CVE-2026-28812 being actively exploited?

CVE-2026-28812 is not in the CISA KEV catalog. Its EPSS exploit probability is 0.69%.

How severe is CVE-2026-28812?

CVE-2026-28812 has a CVSS 3.1 base score of 9.8, rated critical. EPSS estimates a 0.69% probability of exploitation.

Which products are affected by CVE-2026-28812?

Affected products include Apache Jspwiki.

How do I fix CVE-2026-28812?

Upgrade affected software to a fixed version, for example Apache Jspwiki 2.12.4 or later, then confirm no affected versions remain in your inventory.

How Secuno handles this

Secuno correlates vulnerabilities like CVE-2026-28812 against the real software inventory on every managed device, as each hourly inventory arrives. Rather than a static severity, each match is scored in context: exploit availability, EPSS, the asset's exposure, and business criticality decide where it lands in the queue. If an affected version is present anywhere across your portfolio, it surfaces automatically with a prioritised remediation path.

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Data from the NVD, CISA KEV catalog and FIRST EPSS. CVSS 3.1 base score shown where available.