What is CVE-2026-55083?

CVE-2026-55083 is a critical-severity vulnerability in Dhis2 Dhis2-Core, classified under Deserialization of Untrusted Data. CVSS score: 9.1/10. Published 2026-10-01.

How severe is CVE-2026-55083?

Critical severity. CVSS v3 base score is 9.1 out of 10.

Deserialization in Dhis2 Dhis2-Core

CVE-2026-55083

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.

Vulnerability class: Insecure Deserialization

Published 2026-10-01.

CVSS v3 metric

CVSS v3 base score 9.1 (Critical). Vector: CVSS:3.1/AV:N/AC:L/PR:H/UI:N/S:C/C:H/I:H/A:H.

EPSS exploit prediction

No EPSS score from FIRST.org yet. New CVEs usually get one within a few days; no score means no signal yet, not low risk. How EPSS works.

Affected products

Dhis2 Dhis2-Core — versions >= 2.42.0, < 2.42.5.1, >= 2.43.0, < 2.43.0.1

Weakness classification (CWE)

CWE-502 — Deserialization of Untrusted Data

References

Frequently asked questions

What is CVE-2026-55083?: CVE-2026-55083 is a critical-severity vulnerability in Dhis2 Dhis2-Core, classified under Deserialization of Untrusted Data. CVSS score: 9.1/10. Published 2026-10-01.
How severe is CVE-2026-55083?: Critical severity. CVSS v3 base score is 9.1 out of 10.