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TI-2020-18644 Aliases CVE-2020-36389GHSA-pxgv-6gmm-ggxw

In CiviCRM before 5.28.1 and CiviCRM ESR before 5.27.5 ESR, the CKEditor configuration form allows CSRF.

Priority LOW 21CWE-352Published · Updated

Key facts

Attack vector
Network
Privileges required
None
User interaction
Required
Attack complexity
Low
Impact type
Tampering
Confidentiality · integrity · availability
None · Low · None
Fix status
No fix listed

Attack profile from CVSS 3.1 · NVD. Fix status from CNA. Impact type from CWE-352.

Summary

In CiviCRM before 5.28.1 and CiviCRM ESR before 5.27.5 ESR, the CKEditor configuration form allows CSRF.

Why it matters now

EPSS 0.00661 51st percentileScored 2026-11-07
Public exploit Yes 1 exploit referenceTagged by NVD
Fix No fix listed No fixed version in the sources yet

SSVC decision points

Not available: CISA has not published SSVC decision points for this record.

Affected products

VendorProductAffected versionsFixed inStatusSource
——all versions—No fix listedCNA
  • — Vendor— Affected all versions Fixed in — No fix listed CNA

CPE configurations NVD · 2

CPEVersionsRoleVendor
cpe:2.3:a:civicrm:civicrm:*:*:*:*:extended_security_release:*:*:*before 5.27.5VulnerableCiviCRM
cpe:2.3:a:civicrm:civicrm:*:*:*:*:-:*:*:*before 5.28.1VulnerableCiviCRM
  • cpe:2.3:a:civicrm:civicrm:*:*:*:*:extended_security_release:*:*:* Versions before 5.27.5 Vulnerable ·CiviCRM
  • cpe:2.3:a:civicrm:civicrm:*:*:*:*:-:*:*:* Versions before 5.28.1 Vulnerable ·CiviCRM

Remediation

No fixed version listed by the sources yet.

Timeline

  1. 2026-10-02 Threatist record created from CVE-2020-36389
  2. 2026-10-03 Alias added: GHSA-pxgv-6gmm-ggxw
  3. 2026-10-07 EPSS moved to the 50th–90th percentile

References

Exploit 1

Advisory 1

  • TI-2025-40285 A Stored Cross Site Scripting vulnerability exists in CiviCRM before v6.7 in the… CVSS 3.1MEDIUM 6.1
  • TI-2023-10751 Stored Cross Site Scripting (XSS) vulnerability in the add contact function CiviCRM… CVSS 3.1MEDIUM 5.4
  • TI-2018-16163 PEAR HTML_QuickForm version 3.2.14 contains an eval injection (CWE-95) vulnerability in… CVSS 3.0CRITICAL 9.8
  • TI-2020-18643 In CiviCRM before 5.21.3 and 5.22.x through 5.24.x before 5.24.3, users may be able to… CVSS 3.1HIGH 8.8
  • TI-2013-05077 Multiple SQL injection vulnerabilities in CRM/Core/Page/AJAX/Location.php in CiviCRM… CVSS 2.0HIGH 7.5
  • TI-2013-04087 The Quick Search API in CiviCRM 4.2.0 through 4.2.9 and 4.3.0 through 4.3.3 allows remote… CVSS 2.0MEDIUM 6.5
See all 9 →

Sources

This product uses the NVD API but is not endorsed or certified by the NVD. Sources and licences