CVE-2026-55083

CRITICAL 9.1

DHIS2: Unsafe Java Deserialization - Remote Code Execution (RCE)

CVSS Score

9.1

EPSS Score

0.0%

EPSS Percentile

0th

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.

CWE	CWE-502
Vendor	dhis2
Product	dhis2-core
Published	Oct 1, 2026
Last Updated	Oct 1, 2026

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CVSS v3 Breakdown

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

Attack Vector

Network

Attack Complexity

Low

Privileges Required

High

User Interaction

None

Scope

Changed

Confidentiality

High

Integrity

High

Availability

High

Affected Versions

dhis2 / dhis2-core

>= 2.42.0, < 2.42.5.1 >= 2.43.0, < 2.43.0.1

References

NVD ↗ CVE.org ↗ EPSS Data ↗

github.com: https://github.com/dhis2/dhis2-core/security/advisories/GHSA-3fr2-wvqx-cmr5 github.com: https://github.com/dhis2/dhis2-core/releases/tag/2.42.5.1 github.com: https://github.com/dhis2/dhis2-core/releases/tag/2.43.0.1