CVE-2020-26124
CVE-2020-26124 is a high-severity vulnerability in Openmediavault with a CVSS 3.x base score of 8.8. Its EPSS exploit-prediction score of 67% places it in the 99th percentile, indicating an elevated likelihood of exploitation. The underlying weakness is classified as CWE-94.
Key facts
- Severity: High (CVSS 3.x base score 8.8)
- CVSS v2: 9.0
- EPSS exploit prediction: 67% (99th percentile)
- Actively exploited: Not listed in CISA KEV
- Weakness: CWE-94
- Affected product: Openmediavault
- Published:
- Last modified:
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.
Frequently asked questions
- What is CVE-2020-26124?
- 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.
- How severe is CVE-2020-26124?
- CVE-2020-26124 has a CVSS 3.x base score of 8.8, rated high severity. It is exploitable over network with low attack complexity, requires low privileges and no user interaction. Impact on confidentiality is high, integrity high, and availability high.
- Is CVE-2020-26124 being actively exploited?
- It is not currently listed in CISA's KEV catalog. Its EPSS exploit-prediction score is 67% (99th percentile), an estimate of the probability of exploitation in the next 30 days.
- What products are affected by CVE-2020-26124?
- CVE-2020-26124 affects Openmediavault. See the affected-products list for the exact vulnerable versions.
- How do I fix CVE-2020-26124?
- Review the linked vendor and NVD advisories for patched versions and mitigations, then upgrade or apply the recommended workaround. Given its high severity, prioritise patching exposed systems.
- When was CVE-2020-26124 published?
- CVE-2020-26124 was published on 2020-10-02 and last updated on 2026-06-17.
References
- http://packetstormsecurity.com/files/160223/OpenMediaVault-rpc.php-Authenticated-PHP-Code-Injection.html
- https://github.com/openmediavault/openmediavault/commit/ebb51bbf5a39f4955eab0073bf87f2a31926d85d
- https://www.openmediavault.org/?p=2797
Affected products (1)
- cpe:2.3:a:openmediavault:openmediavault:*:*:*:*:*:*:*:*
More vulnerabilities in Openmediavault
- CVE-2013-3632 — High (CVSS 8.8): The Cron service in rpc.php in OpenMediaVault allows remote authenticated users to execute cron jobs as arbitrary users…
- CVE-2025-50674 — High (CVSS 7.8): An issue was discovered in the changePassword method in file /usr/share/php/openmediavault/system/user.inc in…
- CVE-2017-1000065 — Medium (CVSS 6.1): Multiple Cross-site scripting (XSS) vulnerabilities in rpc.php in OpenMediaVault release 2.1 in Access Rights…
All CVEs affecting Openmediavault →
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- CVE-2026-53576 — Critical (CVSS 10.0): Kestra is an open-source, event-driven orchestration platform. Prior to 1.0.45 and 1.3.21, the authentication filter…
- CVE-2026-10561 — Critical (CVSS 10.0): IBM Langflow OSS 1.0.0 through 1.9.3 has an vulnerability due to an improper isolation of Python execution combined…
- CVE-2026-25470 — Critical (CVSS 10.0): Improper Control of Generation of Code ('Code Injection') vulnerability in ACPT ACPT (Pro) - Custom Post Types Plugin…
- CVE-2026-48836 — Critical (CVSS 10.0): Unauthenticated Remote Code Execution (RCE) in Easy Invoice <= 2.1.19 versions.