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CRITICAL severity

CVE-2018-19276 — openmrs-core

CRITICAL

CVE-2018-19276 is a critical-severity (CVSS 9.8) Deserialization of Untrusted Data vulnerability. 10 public exploit references exist, so weaponization risk is real. A fix is available — see the affected versions and patch details below.

Published
Updated
Affected
1 product
Patched
See advisory
Exploits
10 known
Exploitation data as of Oct 22, 2026 · OSV.dev, NVD, FIRST.org (EPSS)

EPSS Exploitation Probability

via FIRST.org ↗
98.7%probability of exploitation in next 30 days
Very High Risk0.00%
Lower risk than most CVEs100th percentile — riskier than 100% of all scored CVEsHighest risk
91.7%94.5%97.2%100.0%93.3%98.7%Apr 26Aug 26Oct 26

Probability of exploitation in the next 30 days, from FIRST.org EPSS.

How urgent is this, really

CVE-2018-19276 by exploitation likelihood (EPSS) against impact (CVSS). In the shaded patch-first corner (EPSS 50%+, CVSS 7.0+).

Where this sits among everything scored

Of 394,803 CVEs with a current EPSS score, this one falls in the ≥ 90% band (highlighted). Counts from FIRST.org, log-scaled.

Description

OpenMRS before 2.24.0 is affected by an Insecure Object Deserialization vulnerability that allows an unauthenticated user to execute arbitrary commands on the targeted system via crafted XML data in a request body.

Affected Products

1 product · 3 configurations
Application
openmrsopenmrs
≥ 2.1.0 && < 2.1.4
range
Exploits & PoCs
10

Research use only. For defensive security, authorized penetration testing, and academic research only. Never execute exploit code against systems without explicit written authorization.

EDB-47792remotelinux✓ Verified

OpenMRS - Java Deserialization RCE (Metasploit)

by Metasploit · Dec 18, 2019

Exploit-DB Source
EDB-46327webappsjava

OpenMRS Platform < 2.24.0 - Insecure Object Deserialization

by Bishop Fox · Feb 5, 2019

Exploit-DB Source

Detection & mitigation playbook

Vulnerability

  1. Detect

    Identify every host running the affected component and compare the installed build against the fixed version below — for source-built or distro-packaged software the version string, not a lockfile, is the source of truth (`dpkg -l`, `rpm -q`, or the binary's own `--version`).

  2. Fix

    Upgrade the affected component to the fixed release for CVE-2018-19276, or apply your distribution's backported patch — distro builds are often patched at an older version number, so check your vendor's advisory rather than the upstream version alone.

  3. Workarounds

    Do not deserialise data from untrusted sources: where the format allows it, restrict deserialisation to an explicit allowlist of expected types, and prefer a data-only format (JSON, Protobuf) over one that can reconstruct arbitrary objects until you can upgrade.

How to detect CVE-2018-19276

A community-maintained Nuclei template exists for this CVE. You can scan for it directly:

nuclei -id cve-2018-19276 -u https://target
Template
OpenMRS Platform < 2.24.0 - Insecure Object Deserialization
Severity
critical
Impact
Unauthenticated attackers can execute arbitrary system commands via insecure object deserialization, leading to complete server compromise and access to sensitive patient data.
Remediation
Upgrade to OpenMRS Platform version 2.24.0 or later.

Template by ProjectDiscovery nuclei-templates (DhiyaneshDK), MIT licensed. View the full template. Scan only systems you are authorised to test.

Frequently Asked Questions

OpenMRS before 2.24.0 is affected by an Insecure Object Deserialization vulnerability that allows an unauthenticated user to execute arbitrary commands on the targeted system via crafted XML data in a request body.
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CVE-2018-19276: openmrs-core (Critical 9.8)