Skip to content
Fencer Intel
critical 9.8

CVE-2020-21322 json

Arbitrary Code Execution in feehi/cms

published 5y ago modified 4mo ago also GHSA-rf3w-29h3-r636 , EUVD-2021-2107

cvss
9.8
version 3.1, NVD
cisa kev
Not listed
not in CISA's catalog
epss
1.8%
EPSS 1.8% chance of exploitation in 30 days, percentile 78%
public exploits
0
none known

Summary

An arbitrary file upload vulnerability in Feehi CMS v2.0.8 and below allows attackers to execute arbitrary code via a crafted PHP file.

Patch / fix

  • packagist feehi/cms 2.0.8.1

Is CVE-2020-21322 in your dependencies? Fencer shows which of your repositories are affected as soon as an advisory lands, and opens the fix as a pull request.

Check with Fencer

Exploit prediction

1.78% chance of exploitation in the next 30 days, higher than 78% of all scored CVEs (FIRST EPSS, 2026-11-09).

Exploits and checks

  • github.com https://github.com/liufee/cms/issues/44 referenced PoC, tagged "exploit" by a source, unverified

CVSS scores

assigned by version score vector
NVD 3.1 9.8 CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H
NVD 2.0 7.5 AV:N/AC:L/Au:N/C:P/I:P/A:P

Affected packages

ecosystem package affected fixed in
packagist feehi/cms
<2.0.8.1
2.0.8.1

Classification

Weakness
  • CWE-434 Unrestricted Upload of File with Dangerous Type

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.