CVE-2026-28812

criticalCVSS 9.8covered by 1 sourcefirst seen 2026-07-30

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.

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Exploitation outlook

Low exploitation risk0.31% 30-day exploitation probability — currently an unlikely target, but scores change as exploit code circulates. Riskier than 24% of all EPSS-scored CVEs.

Advisory coverage (1)

criticalCVE-2026-28812: UserManager lack of checks allows impersonation in Apache JSPWiki up to 2.12.3 which may allow…nvd · 2026-07-30

External references

NVD record for CVE-2026-28812

CVE.org record

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