Critical severity · published Jun 30, 2021
CVE-2021-27903
An issue was discovered in Craft CMS before 3.6.7
9.8
CVSS
2.8%
EPSS
No
On KEV
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).
CVSS vector
CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H
Attack vector
Network
Complexity
Low
Privileges
None
User interaction
None
Confidentiality
High
Integrity
High
Availability
High
Scope
Unchanged
Exploitation
Is it being used?
Exploit prediction (EPSS)2.8% · higher than 86% of CVEs
Exploited in the wildNo evidence yet
CISA KEVNot listed
Ransomware campaign useNot known
Affected products
Which versions
CC
Craft Cms · Craftcms
before 3.6.7 · source: NVD
References
NVD
https://nvd.nist.gov/vuln/detail/CVE-2021-27903
CVE.org
https://www.cve.org/CVERecord?id=CVE-2021-27903
Release Notes
https://github.com/craftcms/cms/blob/develop/CHANGELOG.md#367---2021-02-23
Release Notes
https://github.com/craftcms/cms/blob/develop/CHANGELOG.md#security
Patch
https://github.com/craftcms/cms/commit/c17728fa0bec11d3b82c34defe0930ed409aec38
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