CVE-2020-36389
In CiviCRM before 5.28.1 and CiviCRM ESR before 5.27.5 ESR, the CKEditor configuration form...
In CiviCRM before 5.28.1 and CiviCRM ESR before 5.27.5 ESR, the CKEditor configuration form allows CSRF.
Attack profile
How easy it is to exploit
- Attack vector
- Network
- Complexity
- Low
- Privileges needed
- None
- User interaction
- Required
What an attacker can affect
- Confidentiality
- None
- Integrity
- Low
- Availability
- None
Exploit likelihood
What each source reports
NVD Score used
In CiviCRM before 5.28.1 and CiviCRM ESR before 5.27.5 ESR, the CKEditor configuration form allows CSRF.
- Record
CVE-2020-36389- CVSS 3.1
- 4.3 Medium
CVSS:3.1/AV:N/AC:L/PR:N/UI:R/S:U/C:N/I:L/A:N - CVSS 2.0
- 4.3 Medium
AV:N/AC:M/Au:N/C:N/I:P/A:N - Weakness
- CWE-352
- Updated
- 2026-11-02
CVE ListNo score
In CiviCRM before 5.28.1 and CiviCRM ESR before 5.27.5 ESR, the CKEditor configuration form allows CSRF.
- Record
CVE-2020-36389- Updated
- 2026-11-02
EUVDEUVD-2020-23920No score
In CiviCRM before 5.28.1 and CiviCRM ESR before 5.27.5 ESR, the CKEditor configuration form allows CSRF.
- Record
EUVD-2020-23920- Updated
- 2026-11-03
GitHub AdvisoriesGHSA-pxgv-6gmm-ggxw
In CiviCRM before 5.28.1 and CiviCRM ESR before 5.27.5 ESR, the CKEditor configuration form...
In CiviCRM before 5.28.1 and CiviCRM ESR before 5.27.5 ESR, the CKEditor configuration form allows CSRF.
- Record
GHSA-pxgv-6gmm-ggxw- CVSS 3.1
- 4.3 Medium
CVSS:3.1/AV:N/AC:L/PR:N/UI:R/S:U/C:N/I:L/A:N - Weakness
- CWE-352
- Updated
- 2026-11-02
OSV
In CiviCRM before 5.28.1 and CiviCRM ESR before 5.27.5 ESR, the CKEditor configuration form allows CSRF.
- Record
CVE-2020-36389- CVSS 3.1
- 4.3 Medium
CVSS:3.1/AV:N/AC:L/PR:N/UI:R/S:U/C:N/I:L/A:N - Updated
- 2026-11-02
OSVDEBIAN-CVE-2020-36389
In CiviCRM before 5.28.1 and CiviCRM ESR before 5.27.5 ESR, the CKEditor configuration form allows CSRF.
- Record
DEBIAN-CVE-2020-36389- CVSS 3.1
- 4.3 Medium
CVSS:3.1/AV:N/AC:L/PR:N/UI:R/S:U/C:N/I:L/A:N - Updated
- 2026-11-02
OSVUBUNTU-CVE-2020-36389
In CiviCRM before 5.28.1 and CiviCRM ESR before 5.27.5 ESR, the CKEditor configuration form allows CSRF.
- Record
UBUNTU-CVE-2020-36389- CVSS 3.1
- 4.3 Medium
CVSS:3.1/AV:N/AC:L/PR:N/UI:R/S:U/C:N/I:L/A:N - Updated
- 2026-11-02
OSVBIT-civicrm-2020-36389No score
In CiviCRM before 5.28.1 and CiviCRM ESR before 5.27.5 ESR, the CKEditor configuration form allows CSRF.
- Record
BIT-civicrm-2020-36389- Updated
- 2026-11-02
Affected products
Affected packages
| Package | Affected | Fixed |
|---|---|---|
civicrmBitnami | before 5.27.5, before 5.28.1 | 5.27.55.28.1 |
civicrmDebian:11 | before 5.28.4+dfsg1-1 | 5.28.4+dfsg1-1 |
civicrmUbuntu:Pro:16.04:LTS | All versions, plus listed versions 4.7.1+dfsg-14.7.1+dfsg-24.7.1+dfsg-2ubuntu14.7.1+dfsg-2ubuntu1+esm1 | None known |
civicrmUbuntu:Pro:18.04:LTS | All versions, plus listed versions 4.7.23+dfsg-1ubuntu14.7.24+dfsg-1ubuntu14.7.30+dfsg-1ubuntu14.7.30+dfsg-1ubuntu1+esm1 | None known |
civicrmUbuntu:Pro:20.04:LTS | All versions, plus listed versions 5.11.0+dfsg-15.18.1+dfsg-15.20.3+dfsg-15.21.0+dfsg-15.21.1+dfsg-15.21.2+dfsg-15.21.2+dfsg-1ubuntu0.1~esm1 | None known |
History
| Recorded | Changed | Sources |
|---|---|---|
| facts | ||
| aliases | EUVD | |
| first indexed | CVE List, GitHub Advisories, NVD, OSV |
Dates are when Every CVE recorded each change. Upstream dates may differ.
In short
CVE-2020-36389 is a medium vulnerability (CVSS 4.3) in Civicrm, published June 17, 2021. No source lists public exploit code. EPSS puts the chance of exploitation in the next 30 days at 0.66%, the 52nd percentile. Fixed in civicrm 5.27.5.
References
civicrm.org/advisory/civi-sa-2020-11-csrf-ckeditor-configuration-form
blog.sonarsource.com/civicrm-code-execution-vulnerability-chain-explained
nvd.nist.gov/vuln/detail/CVE-2020-36389
github.com/advisories/GHSA-pxgv-6gmm-ggxw
security-tracker.debian.org/tracker/CVE-2020-36389
ubuntu.com/security/CVE-2020-36389
cve.org/CVERecord?id=CVE-2020-36389