CVE-2023-54347: OpenEMR 7.0.1 contains an authentication brute force vulnerability that allows attackers to bypass rate limiti

This week

HIGH 7.5REMOTEDOWNGRADE

CVE-2023-54347 is a high-severity flaw (CVSS 7.5) affecting openemr. Below: why it ranks where it does, which versions are affected, what to do, and the exact commands.

OpenEMR 7.0.1 contains an authentication brute force vulnerability that allows attackers to bypass rate limiting protections by sending repeated login attempts to the main login endpoint. Attackers can submit POST requests with authUser and clearPass parameters to systematically test username and password combinations without account lockout restrictions.

Why this priority

High severity
Public exploit reference
Remotely exploitable, no login, no user action

No fix is published yet: follow the downgrade or mitigation steps.

Risk facts

CVSS score	7.5 (High)
Attack vector	Network (remote)
Attack complexity	Low
Privileges needed	None
User interaction	None
EPSS exploit chance	0.5% (top 55%)
CISA exploited list	No
Weakness	CWE-307
Published	2026-05-05
Last modified	2026-06-17

Publisher (CNA): VulnCheck · Vendor: open-emr

Last updated 2026-06-17 · Sources: CVE Program, NVD, CISA KEV, EPSS and vendor advisories · How we score

Am I affected?

Timeline

2026-05-05 12:16 UTCPublished CVE record published
2026-06-17 06:47 UTCUpdated Record last modified

open-emr openemr DOWNGRADE

Affected: 7.0.1

Fixed in: no fixed release known

Safe to downgrade to: a release before 7.0.1

1. Check installed version

apt-cache policy openemr || rpm -q openemr || openemr --version

2. No fixed release: DOWNGRADE to a release before 7.0.1 (Debian / Ubuntu)

apt-cache madison openemr sudo apt install openemr=<VERSION_BEFORE_7.0.1> sudo apt-mark hold openemr

2. No fixed release: DOWNGRADE (RHEL / Amazon Linux / Fedora)

dnf --showduplicates list openemr sudo dnf downgrade openemr-<VERSION_BEFORE_7.0.1> sudo dnf versionlock add openemr

Downgrade risk

Downgrading can break dependent software and may reopen older bugs. Read the distro advisory first and test on a non-production host.

After downgrade

Restart the service, and keep the package held until a fixed release ships.

Verify at the official source NVD · CVE Program · Report a problem with this page
Scores and fixes here are computed automatically from those and other public sources. Confirm with the vendor advisory before changing production systems.

Quick answers

How do I fix CVE-2023-54347?

openemr: downgrade or apply the listed mitigation. Exact commands for each OS are on this page.

Is CVE-2023-54347 being exploited?

CVE-2023-54347 is not on the CISA Known Exploited Vulnerabilities list at the time of the last update. Check again, as this can change.

What does CVE-2023-54347 affect?

CVE-2023-54347 affects openemr. Severity is high (CVSS 7.5). OpenEMR 7.0.1 contains an authentication brute force vulnerability that allows attackers to bypass rate limiting protections by sending repeated login attempts to the main login endpoint. Attackers can submit POST requests with authUser and

How urgent is CVE-2023-54347?

Priority 48/100. High severity; Public exploit reference; Remotely exploitable, no login, no user action

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References

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