CVE-2021-27903

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).

Category

9.8
CVSS
Severity: Critical
CVSS 3.1 •
CVSS 2.0 •
EPSS 3.82% Top 15%
Third-Party Advisory github.com Third-Party Advisory github.com Third-Party Advisory github.com
Affected: n/a n/a
Published at:
Updated at:

References

Link Tags
https://github.com/craftcms/cms/blob/develop/CHANGELOG.md#security third party advisory release notes
https://github.com/craftcms/cms/commit/c17728fa0bec11d3b82c34defe0930ed409aec38 third party advisory patch
https://github.com/craftcms/cms/blob/develop/CHANGELOG.md#367---2021-02-23 third party advisory release notes

Frequently Asked Questions

What is the severity of CVE-2021-27903?
CVE-2021-27903 has been scored as a critical severity vulnerability.
How to fix CVE-2021-27903?
To fix CVE-2021-27903, make sure you are using an up-to-date version of the affected component(s) by checking the vendor release notes. As for now, there are no other specific guidelines available.
Is CVE-2021-27903 being actively exploited in the wild?
It is possible that CVE-2021-27903 is being exploited or will be exploited in a near future based on public information. According to its EPSS score, there is a ~4% probability that this vulnerability will be exploited by malicious actors in the next 30 days.
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