CVE-2021-27903
Craft CMS Remote Code Injection
9.8
CRITICAL
CVSS 3.1
EPSS 3.8%
Description
An issue was discovered in Craft CMS before 3.6.7. In some circumstances, a potential Remote Code Execution vulnerability existed on sites that did not restrict administrative changes (if an attacker were somehow able to hijack an administrator's session).
How to fix CVE-2021-27903
To remediate CVE-2021-27903, upgrade the affected package to a fixed version below.
- Packagist/craftcms/cms—upgrade to 3.6.7 or later
Is CVE-2021-27903 being exploited?
Low — EPSS is 3.8%, meaning exploitation activity has not been observed at scale.
Affected packages (1)
- from 0, < 3.6.7
CVSS scores
| Source | Version | Severity | Vector |
|---|---|---|---|
| osv | CVSS 3.1 | CRITICAL9.8 | CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H |