CVE-2020-28939: OpenClinic version 0.8.2 is affected by a medical/test_new.php insecure file upload vulnerability

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HIGH 7.2DOWNGRADE

CVE-2020-28939 is a high-severity flaw (CVSS 7.2) affecting openclinic. Below: why it ranks where it does, which versions are affected, what to do, and the exact commands.

OpenClinic version 0.8.2 is affected by a medical/test_new.php insecure file upload vulnerability. This vulnerability allows authenticated users (with substantial privileges) to upload malicious files, such as PHP web shells, which can lead to arbitrary code execution on the application server.

Why this priority

High severity
Public exploit reference

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

Risk facts

CVSS score	7.2 (High)
Attack vector	Network (remote)
Attack complexity	Low
Privileges needed	High
User interaction	None
EPSS exploit chance	1.7% (top 22%)
CISA exploited list	No
Weakness	CWE-434
Published	2020-12-03
Last modified	2026-06-17

Publisher (CNA): MITRE · Vendor: openclinic project

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

Am I affected?

Timeline

2020-12-03 16:15 UTCPublished CVE record published
2026-06-17 03:10 UTCUpdated Record last modified

openclinic project openclinic DOWNGRADE

Affected: 0.8.2

Fixed in: no fixed release known

Safe to downgrade to: a release before 0.8.2

1. Check installed version

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

2. No fixed release: DOWNGRADE to a release before 0.8.2 (Debian / Ubuntu)

apt-cache madison openclinic sudo apt install openclinic=<VERSION_BEFORE_0.8.2> sudo apt-mark hold openclinic

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

dnf --showduplicates list openclinic sudo dnf downgrade openclinic-<VERSION_BEFORE_0.8.2> sudo dnf versionlock add openclinic

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-2020-28939?

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

Is CVE-2020-28939 being exploited?

CVE-2020-28939 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-2020-28939 affect?

CVE-2020-28939 affects openclinic. Severity is high (CVSS 7.2). OpenClinic version 0.8.2 is affected by a medical/test_new.php insecure file upload vulnerability. This vulnerability allows authenticated users (with substantial privileges) to upload malicious files, such as PHP web shells, which can lead

How urgent is CVE-2020-28939?

Priority 50/100. High severity; Public exploit reference

Software pages

PHP vulnerabilities

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References

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