What’s Vulnerable › Vulnerabilities

CVE-2020-36388

• Severity: high (CVSS 8.8 v3.1)
• Exploited in the wild: not listed in CISA KEV
• EPSS: 1.4% probability of exploitation in the next 30 days
• Public exploit or detection template: yes
• Published: 2021-06-17 · updated 2026-06-17
• Weakness: CWE-434

Description

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.

Affected products

• CiviCRM: before 5.21.3; from 5.22.0 before 5.24.3 — fixed in 5.21.3, 5.24.3

How to fix

Upgrade to a fixed version: CiviCRM 5.21.3, 5.24.3. Check the vendor advisory for mitigations.

References

• https://blog.sonarsource.com/civicrm-code-execution-vulnerability-chain-explained/
• https://civicrm.org/advisory/civi-sa-2020-03
• https://blog.sonarsource.com/civicrm-code-execution-vulnerability-chain-explained/
• https://civicrm.org/advisory/civi-sa-2020-03

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