CVE-2020-5728Public exploitNetwork attack vector

Reflected XSS via unescaped Referrer header

Published Apr 17, 2020 · Updated Aug 4, 2024

Reflected XSS in OpenMRS Reference Application Module 2.9.0 and earlier allows remote attackers to execute script via the Referrer header. The application copies the header value into an HTML element named redirectUrl on pages such as login.htm without sufficient validation or output neutralization. No authentication is required, but a victim must interact with the crafted content before script runs in the victim's browser within the OpenMRS origin.

CVSS severity6.1
Medium
EPSS probability1.14%
Next 30 days · Sep 16, 2026
Known exploitationUnconfirmed
Based on sourced intelligence
Hinoki checkNot available
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Summary

What happened

Reflected XSS in OpenMRS Reference Application Module 2.9.0 and earlier allows remote attackers to execute script via the Referrer header. The application copies the header value into an HTML element named redirectUrl on pages such as login.htm without sufficient validation or output neutralization. No authentication is required, but a victim must interact with the crafted content before script runs in the victim's browser within the OpenMRS origin.

The record

CVE
CVE-2020-5728
Published
Apr 17, 2020
Updated
Aug 4, 2024
Vendor
OpenMRS
Product
OpenMRS Reference Application Module
Classifications
CWE-20, CWE-79, T1203
Attack vector
network
Privileges
unauthenticated

Timeline

How it unfolded

  1. Apr 17, 2020CVE publishedPublication date reported by the CVE source.
  2. Aug 4, 2024Record updatedLatest update available in the CVE record.

Exploitability

Present is not the same as exploitable

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Is a vulnerable build present?

Compare these published version ranges with your installed build and any vendor patches.

  1. Affected versionversion=Versions 2.90 and prior

What conditions does exploitation require?

Attack vectornetwork
Required privilegesunauthenticated

What is affected?

OpenMRS · OpenMRS Reference Application Moduleversion=Versions 2.90 and prior

Published CVSS scores

4.3NIST National Vulnerability DatabaseAV:N/AC:M/Au:N/C:N/I:P/A:N
6.1NIST National Vulnerability DatabaseCVSS:3.1/AV:N/AC:L/PR:N/UI:R/S:C/C:L/I:L/A:N
6.8Tenable ResearchAV:N/AC:M/Au:N/C:P/I:P/A:P

CVSS describes severity. EPSS estimates exploitation probability.

Attacks

What attackers are doing with it

Daily unique IPs observed by Shadowserver honeypots for known exploited vulnerabilities (KEVs). Missing observations do not establish an absence of attacks.

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No observations available

Sep 9, 2026Sep 15, 2026
Latest reporting daySep 15, 2026
Latest daily unique IPsUnavailable
Prior 30-day averageUnavailable
SourceShadowserver honeypots (KEV)
Vectornetwork
Privilegesunauthenticated
Known exploitationUnconfirmed
Public exploitPublished

Weakness, pattern, technique

CWE-20Improper Input Validation
CWE-79Improper Neutralization of Input During Web Page Generation ('Cross-site Scripting')
T1203Exploitation for Client Execution

Public exploit references

Labels summarize the accepted research assessment. They do not indicate a test against your environment.

Technologies

Your stack

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Your stack

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