CVE-2020-26124

What it is

openmediavault before 4.1.36 and 5.x before 5.5.12 allows authenticated PHP code injection attacks, via the sortfield POST parameter of rpc.php, because json_encode_safe is not used in config/databasebackend.inc. Successful exploitation allows arbitrary command execution on the underlying operating system as root.

At a glance

Exploitability

Can be exploited over the network with a low-privilege account. High risk of data exposure, data tampering, service disruption.

Exploit odds

65.4% chance of exploitation in the next 30 days (EPSS). Higher than most.

Fix

A patch, advisory or fixed version is referenced. Upgrade or apply it.

Timeline

1. 2020-09-28 00:00 UTC ReservedThe CVE id was reserved by its CNA
2. 2020-10-02 09:15 UTC PublishedDisclosed publicly on CVE.org and NVD
3. 2026-06-17 03:07 UTC Last updatedMost recent change to the record

Why it ranks here

• Exploited in the wild: no, CISA does not list it.
• Exploit odds: 65.4% in the next 30 days (EPSS).
• Severity: 8.8 HIGH (CVSS).
• Fix: a patch or advisory is linked.

Details

Published

2020-10-02 09:15 UTC

Last modified

2026-06-17 03:07 UTC

Exploit probability

65.4% · EPSS, next 30 days

Weakness

CWE-94 · Code injection

Record status

Modified

Affected

• Openmediavault < 4.1.36
• Openmediavault < 5.5.12

Attack profile CVSS 3.1 · 8.8

Attack vector

Network

Complexity

Low

Privileges needed

Low

User interaction

None

Scope

Unchanged

Confidentiality

High

Integrity

High

Availability

High

Is it in your code?

Hand this to your coding agent. It searches your project for the affected products and checks versions. Nothing leaves your machine.

Read https://cve-list.com/agent/cve/CVE-2020-26124.md and follow it. Check whether this project is affected by CVE-2020-26124. Read only. Don't change anything and don't upload my code. Tell me yes, no or not sure, with the file as proof.

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