CVE-2026-55083: DHIS2: Unsafe Java Deserialization - Remote Code Execution (RCE)

Severity: critical (CVSS 9.1 v3.1)
Exploited in the wild: not listed in CISA KEV
EPSS: 0.6% probability of exploitation in the next 30 days
Public exploit or detection template: none known
Published: 2026-10-01 · updated 2026-10-02
Weakness: CWE-502

Description

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-core: from 2.42.0, < 2.42.5.1; from 2.43.0, < 2.43.0.1

References

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

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