CVE-2020-26124

Name: CVE-2020-26124
Creator: NVD / NIST
Published: 2020-10-02T09:15:13.9+00:00
License: https://creativecommons.org/publicdomain/zero/1.0/

HIGHCVSS 8.8/10EPSS 67.17%

Last modified Jun 17, 2026

CVE-2020-26124 is a high-severity vulnerability rated 8.8/10 on the CVSS scale. 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.. EPSS estimates a 67.17% chance of exploitation in the next 30 days.

Description

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.

Metrics

CVSS 3.1

8.8/10

CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:H

EPSS Probability

67.17%

99.2th percentile

Probability of exploitation in the next 30 days. Learn more

Weakness Enumeration

CWE-94

Affected Software

Vendor	Product	Versions
Openmediavault	Openmediavault	< 4.1.36
Openmediavault	Openmediavault	>= 5.0.0, < 5.5.12

References

http://packetstormsecurity.com/files/160223/OpenMediaVault-rpc.php-Authenticated-PHP-Code-Injection.htmlExploit, Third Party Advisory, VDB Entry
https://github.com/openmediavault/openmediavault/commit/ebb51bbf5a39f4955eab0073bf87f2a31926d85dPatch, Third Party Advisory
https://www.openmediavault.org/?p=2797Vendor Advisory
http://packetstormsecurity.com/files/160223/OpenMediaVault-rpc.php-Authenticated-PHP-Code-Injection.htmlExploit, Third Party Advisory, VDB Entry
https://github.com/openmediavault/openmediavault/commit/ebb51bbf5a39f4955eab0073bf87f2a31926d85dPatch, Third Party Advisory
https://www.openmediavault.org/?p=2797Vendor Advisory

Timeline

Published: Oct 2, 2020
Last Modified: Jun 17, 2026
Status: Modified

Frequently Asked Questions

What is CVE-2020-26124?

How severe is CVE-2020-26124?

CVE-2020-26124 has a CVSS score of 8.8/10 (HIGH severity). The EPSS model estimates a 67.17% probability of exploitation in the next 30 days.

How do I fix CVE-2020-26124?

Check the vendor references and advisories linked above for patched versions and mitigation guidance. You can also run a Strix scan to test if your systems are affected.

Are you affected by CVE-2020-26124?

Run a free Strix scan to check your systems for this vulnerability.

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Source: NVD / NIST