OpenMRS 2.9 and prior copies "Referrer" header values into an html element named "redirectUrl" within many webpages (such as login.htm).

published 2020-04-17 6y ago modified 2026-06-17 4mo ago also EUVD-2020-26887

cvss: 6.1; version 3.1, NVD
cisa kev: Not listed; not in CISA's catalog
epss: 1.1%; EPSS 1.1% chance of exploitation in 30 days, percentile 66%
public exploits: 0; none known

OpenMRS 2.9 and prior copies "Referrer" header values into an html element named "redirectUrl" within many webpages (such as login.htm). There is insufficient validation for this parameter, which allows for the possibility of cross-site scripting.

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Exploit prediction

1.14% chance of exploitation in the next 30 days, higher than 66% of all scored CVEs (FIRST EPSS, 2026-11-09).

Exploits and checks

tenable.com https://www.tenable.com/security/research/tra-2020-18 referenced PoC, tagged "exploit" by a source, unverified

CVSS scores

assigned by	version	score	vector
NVD	3.1	6.1	CVSS:3.1/AV:N/AC:L/PR:N/UI:R/S:C/C:L/I:L/A:N
NVD	2.0	4.3	AV:N/AC:M/Au:N/C:N/I:P/A:N

Affected products

n/a OpenMRS

Classification

Weakness

CWE-20 Improper Input Validation
CWE-79 Improper Neutralization of Input During Web Page Generation

References

tenable.com /security/research/tra-2020-18
exploit, third-party-advisory

Sources

CVE List CVE-2020-5728
NVD CVE-2020-5728

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