CVE-2021-27903
highpriority · track · 40OT risk · elevatedEPSS 0.028 · 86 %ileEUUSEPSS · scored 2026-10-27
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
Technical severity, 0–10. One row per scoring source.
base score 0–10 · higher = more severe · hover a vector to decode⚠ sources disagree · high–critical · 7.5–9.8
weaknesses
The CWE weakness classes this flaw belongs to.
affected products (3)
Products and version ranges known to be affected.
advisories (1)
Vendor and ecosystem advisories describing this.
- GHSA-x2j7-6hxm-87p3Craft CMS Remote Code Injection2021-07-02ghsa · osvUS
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).
also known as (3)
Other names and identifiers for this entity.
sources
Which sources assert this record, and when.
references (11)
External citations — patches, advisories, analysis.
- https://github.com/craftcms/cms/blob/develop/CHANGELOG.md#367---2021-02-23cnnvd
- https://github.com/craftcms/cms/blob/develop/CHANGELOG.md#securitycnnvd
- https://github.com/craftcms/cms/commit/c17728fa0bec11d3b82c34defe0930ed409aec38cnnvd
- https://nvd.nist.gov/vuln/detail/CVE-2021-27903cnnvd
- https://www.cybersecurity-help.cz/vdb/SB2021070514cnnvd
- https://github.com/craftcms/cms/blob/develop/CHANGELOG.md#367---2021-02-23enisa_euvd
- https://github.com/craftcms/cms/blob/develop/CHANGELOG.md#securityenisa_euvd
- https://github.com/craftcms/cms/commit/c17728fa0bec11d3b82c34defe0930ed409aec38enisa_euvd
Attackers weaponise vulnerabilities like this against internet-exposed services. See what is exposed on your perimeter with a free passive scan.
Free scan