Critical9.8Apache Software Foundation

Critical [CVE-2026-28812] UserManager lack of checks allows impersonation in Apache JSPWiki up to 2.12.3 which may allow attackers to escalate privileges

This critical-severity Apache Software Foundation advisory covers CVE-2026-28812 affecting Apache JSPWiki.

CVE-2026-28812 Published Jul 30, 2026Updated by vendor Aug 5, 2026

CVE-2026-28812

Affected products & platforms

Apache Software FoundationUnclassified

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Summary

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.

Affected versions

2.12.3

Official advisory · high-confidence parse· fetched 2 months ago·verify at source

Fixed versions

2.12.4

Official advisory · high-confidence parse· fetched 2 months ago·verify at source

Mitigation checklist

Recommended fix / mitigation

Users are recommended to upgrade to version 2.12.4 or newer which fixes this issue.

Official advisory · high-confidence parse· fetched 2 months ago·verify at source

Sources

Official and corroborating records used to build this advisory.

Official vendor advisoryofficial
Official advisory page fetched and parsed for the summary, affected/fixed versions and remediation guidance it provides.
Apache Software Foundation
CVE.org CNA recordCVE.org
Independent CNA record used for near-real-time discovery and missed-CVE reconciliation. Discovered from the machine-readable feed https://raw.githubusercontent.com/CVEProject/cvelistV5/main/cves/delta.json; this link opens the CVE.org record for CVE-2026-28812 instead of the raw feed document.
CVE Program

Cross-references

Validate CVE metadata against the authoritative registries.

CVE-2026-28812NVD CVE.org MITRE

Official resources

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