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Fencer Intel
high 8.8

CVE-2020-36388 json

In CiviCRM before 5.21.3 and 5.22.x through 5.24.x before 5.24.3, users may be able to upload and execute a crafted PHAR archive.

published 5y ago modified 4mo ago also BIT-civicrm-2020-36388 , EUVD-2020-23919

cvss
8.8
version 3.1, NVD
cisa kev
Not listed
not in CISA's catalog
epss
1.4%
EPSS 1.4% chance of exploitation in 30 days, percentile 73%
public exploits
0
none known

Summary

In CiviCRM before 5.21.3 and 5.22.x through 5.24.x before 5.24.3, users may be able to upload and execute a crafted PHAR archive.

Patch / fix

  • bitnami civicrm 5.21.3, 5.24.3
  • civicrm civicrm 5.21.3, 5.24.3
  • civicrm Debian 11 5.24.5+dfsg1-1

debian advisories DEBIAN-CVE-2020-36388

Is CVE-2020-36388 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.

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Exploit prediction

1.44% chance of exploitation in the next 30 days, higher than 73% of all scored CVEs (FIRST EPSS, 2026-11-09).

Exploits and checks

  • blog.sonarsource.com https://blog.sonarsource.com/civicrm-code-execution-vulnerability-chain-explained/ referenced PoC, tagged "exploit" by a source, unverified

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 6.5 AV:N/AC:L/Au:S/C:P/I:P/A:P
OSV 3.1 8.8 CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:H

Affected packages

ecosystem package affected fixed in
bitnami civicrm
<5.21.3
>=5.22.0, <5.24.3
5.21.3
5.24.3

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.