MEDIUM
CVE-2020-36389
CWE-352Published: June 17, 2021· Updated: Jun 17, 2026
4.3
CVSS v3.1
Official Description
In CiviCRM before 5.28.1 and CiviCRM ESR before 5.27.5 ESR, the CKEditor configuration form allows CSRF.
Technical Analysis
CVE-2020-36389 can be exploited remotely over the network without requiring physical or adjacent access, significantly expanding the attack surface for threat actors.
Exploitation does not require any privileges, though user interaction (Required) is needed, which slightly reduces the risk of mass automated attacks.
CVSS v3.1 Vector Breakdown
Exploitability
Attack VectorNetwork
Attack ComplexityLow
Privileges Req.None
User InteractionRequired
ScopeUnchanged
Impact
ConfidentialityNone
IntegrityLow
AvailabilityNone
CVSS:3.1/AV:N/AC:L/PR:N/UI:R/S:U/C:N/I:L/A:N
Affected Vendors & Products
civicrm1 product(s)
civicrm
Source: NVD CPE · 1 total CPE entries
Exploit & PoC Resources
NO KNOWN EXPLOITNo public exploit confirmed at this time
Exploit-DB
Offensive Security exploit database
GitHub PoC Search
Community PoC repositories
Rapid7 / Metasploit
Metasploit module search
PacketStorm
Security advisories & exploits
NVD Detail
Official NIST entry
MITRE CVE
CVE Program entry
External links open in a new tab. Always verify in a controlled environment before use.
Official Patches & Advisories
All References (4)
→
https://blog.sonarsource.com/civicrm-code-execution-vulnerability-chain-explained/Exploit · Third Party Advisory
→
https://blog.sonarsource.com/civicrm-code-execution-vulnerability-chain-explained/Exploit · Third Party Advisory
Quick Facts
CVE IDCVE-2020-36389
CVSS Score4.3 / 10
SeverityMEDIUM
WeaknessCWE-352
CISA KEVNo
Affected1 vendor(s)
PublishedJun 17, 2021
Related CVEs (CWE-352)
Recommended Actions
- →Apply vendor patches immediately
- →Monitor CVE-2020-36389 in threat intel feeds
- →Review IDS/IPS signatures for exploitation attempts
Data sourced from NVD (NIST), CISA KEV, and EPSS (FIRST). Analysis generated by CTIWATCH.COM. CVE data is provided under the NVD usage policy.