CVE-2026-55083: DHIS2 DHIS2-Core

Critical severity, CVSS 9.1. EPSS: 0.6% chance of exploitation in the next 30 days.

DHIS2 is a flexible information system for data capture, management, validation, analytics and visualization. From versions 2.42.0 to before 2.42.5.1, and from versions 2.43.0 to before 2.43.0.1, DHIS2 is vulnerable to remote code execution (RCE) via unsafe Java deserialization. This issue has been patched in versions 2.42.5.1, 2.43.0.1, and 2.44.

Affected products

• DHIS2 DHIS2-Core: from 2.42.0, before 2.42.5.1 (fixed in 2.42.5.1); from 2.43.0, before 2.43.0.1 (fixed in 2.43.0.1)

Published 2026-10-01. Last modified 2026-10-02.