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Fencer Intel
high 8.8

CVE-2020-26124 in the critical feed json

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…

published 6y ago modified 4mo ago also EUVD-2020-18754

cvss
8.8
version 3.1, NVD
cisa kev
Not listed
not in CISA's catalog
epss
65.4%
EPSS 65.4% chance of exploitation in 30 days, percentile 99.2%
public exploits
1
Metasploit

Summary

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.

Patch / fix

  • openmediavault openmediavault 4.1.36, 5.5.12

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Timeline

  1. First public exploit (Metasploit exploit/unix/webapp/openmediavault_rpc_rce)
  2. Published

Exploit prediction

65.39% chance of exploitation in the next 30 days, higher than 99.2% of all scored CVEs (FIRST EPSS, 2026-11-09).

Exploits and checks

CVSS scores

assigned by version score vector
NVD 3.1 8.8 CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:H
NVD 2.0 9.0 AV:N/AC:L/Au:S/C:C/I:C/A:C

Classification

Weakness
  • CWE-94 Improper Control of Generation of Code

References

Sources

Fencer Intel keeps one entry per vulnerability: the CVE id wins, then GHSA, and records that alias each other are merged, except that two CVEs always keep separate entries. The same data is available as JSON.