CVE-2020-36389 json
In CiviCRM before 5.28.1 and CiviCRM ESR before 5.27.5 ESR, the CKEditor configuration form allows CSRF.
published 2021-06-17 5 y ago modified 2026-06-17 4 mo ago also BIT-civicrm-2020-36389 , EUVD-2020-23920
- cvss
- 4.3
- version 3.1, NVD
- cisa kev
- Not listed
- not in CISA's catalog
- epss
- 0.7%
- EPSS 0.7% chance of exploitation in 30 days, percentile 51%
- public exploits
- 0
- none known
Summary
In CiviCRM before 5.28.1 and CiviCRM ESR before 5.27.5 ESR, the CKEditor configuration form allows CSRF.
Patch / fix
- bitnami civicrm 5.27.5, 5.28.1
- civicrm civicrm 5.27.5, 5.28.1
- civicrm Debian 11 5.28.4+dfsg1-1
debian advisories DEBIAN-CVE-2020-36389
Exploit prediction
0.66% chance of exploitation in the next 30 days, higher than 51% of all scored CVEs (FIRST EPSS, 2026-11-08).
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 | 4.3 | CVSS:3.1/AV:N/AC:L/PR:N/UI:R/S:U/C:N/I:L/A:N |
| NVD | 2.0 | 4.3 | AV:N/AC:M/Au:N/C:N/I:P/A:N |
| OSV | 3.1 | 4.3 | CVSS:3.1/AV:N/AC:L/PR:N/UI:R/S:U/C:N/I:L/A:N |
Affected packages
| ecosystem | package | affected | fixed in |
|---|---|---|---|
| bitnami | civicrm | <5.27.5 <5.28.1 |
5.27.5 5.28.1 |
Classification
- Weakness
-
- CWE-352 Cross-Site Request Forgery
References
-
blog.sonarsource.com
/civicrm-code-execution-vulnerability-chain-explained/
exploit, third-party-advisory, web
-
civicrm.org
/advisory/civi-sa-2020-11-csrf-ckeditor-configuration-form
vendor-advisory, web
Sources
- CVE List CVE-2020-36389
- NVD CVE-2020-36389
- OSV BIT-civicrm-2020-36389
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