CVE-2020-5730Public exploitNetwork attack vector

Cross-site scripting via unescaped sessionLocation parameter

Published Apr 17, 2020 · Updated Aug 4, 2024

Reflected XSS in the OpenMRS 2.9.0 and earlier login page allows remote attackers to run script in a user’s browser. The login page places the sessionLocation query value into its HTML response without neutralizing script markup. Exploitation requires a user to open an attacker-crafted request, after which script runs in the OpenMRS origin and can read or alter browser-accessible data.

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 the OpenMRS 2.9.0 and earlier login page allows remote attackers to run script in a user’s browser. The login page places the sessionLocation query value into its HTML response without neutralizing script markup. Exploitation requires a user to open an attacker-crafted request, after which script runs in the OpenMRS origin and can read or alter browser-accessible data.

The record

CVE
CVE-2020-5730
Published
Apr 17, 2020
Updated
Aug 4, 2024
Vendor
OpenMRS
Product
OpenMRS Core
Classifications
CWE-79, T1189
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 Coreversion=Versions 2.90 and prior

Published CVSS scores

6.1NIST NVDCVSS:3.1/AV:N/AC:L/PR:N/UI:R/S:C/C:L/I:L/A:N
4.3NIST NVDAV:N/AC:M/Au:N/C:N/I:P/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.

Daily unique IPsNo honeypot observations are available for this CVE in the selected window.

No observations available

Sep 10, 2026Sep 16, 2026
Latest reporting daySep 16, 2026
Latest daily unique IPsUnavailable
Prior 30-day averageUnavailable
SourceShadowserver honeypots (KEV)
Vectornetwork
Privilegesunauthenticated
Known exploitationUnconfirmed
Public exploitPublished

Weakness, pattern, technique

CWE-79Improper Neutralization of Input During Web Page Generation ('Cross-site Scripting')
T1189Drive-by Compromise

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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