Critical severity · published Oct 1, 2026
CVE-2026-55083
DHIS2: Unsafe Java Deserialization - Remote Code Execution (RCE)
9.1
CVSS
0.6%
EPSS
No
On KEV
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.
CVSS vector
CVSS:3.1/AV:N/AC:L/PR:H/UI:N/S:C/C:H/I:H/A:H
Attack vector
Network
Complexity
Low
Privileges
High
User interaction
None
Confidentiality
High
Integrity
High
Availability
High
Scope
Changed
Exploitation
Is it being used?
Exploit prediction (EPSS)0.6% · higher than 47% of CVEs
Exploited in the wildNo evidence yet
CISA KEVNot listed
Ransomware campaign useNot known
Affected products
Which versions
DH
dhis2-core · dhis2
>= 2.42.0, < 2.42.5.1; >= 2.43.0, < 2.43.0.1 · source: vendor
References
NVD
https://nvd.nist.gov/vuln/detail/CVE-2026-55083
CVE.org
https://www.cve.org/CVERecord?id=CVE-2026-55083
x_refsource_CONFIRM
https://github.com/dhis2/dhis2-core/security/advisories/GHSA-3fr2-wvqx-cmr5
x_refsource_MISC
https://github.com/dhis2/dhis2-core/releases/tag/2.42.5.1
x_refsource_MISC
https://github.com/dhis2/dhis2-core/releases/tag/2.43.0.1
More from dhis2-core
8.8
CVE-2026-55084
SQL Injection in SqlView Filter Parameter Leading to Arbitrary Database Read
8.7
CVE-2026-55082
DHIS2 SQL injection in SQL View filter values
7.5
CVE-2023-31139
DHIS2 Core unrestricted session cookies with Personal Access Tokens
7.3
CVE-2026-55081
DHIS2 Reflected XSS in OpenAPI HTML scope parameter
6.5
CVE-2023-32060
DHIS2 Core Improper Access Control with Category Option Combination sharing in /api/trackedEntityInstance and /api/events