Auth bypass in Craftcms Craft Cms
CVE-2021-27903
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).
Vulnerability class: Broken Access Control
Published · last modified .
CVSS v3 metric
CVSS v3 base score 9.8 (Critical). Vector: CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H.
EPSS exploit prediction
EPSS: 0.028 (86.0th percentile), scored .
Low probability of exploitation in the next 30 days, but still tracked. 86th percentile — 86.0% of CVEs in the catalogue have a lower EPSS than this one. How to read EPSS.
EPSS over last 30 days · oldest: 0.028 · newest: 0.028 · change: 0.000
Affected products
Weakness classification (CWE)
References
- github.com/craftcms/cms/blob/develop/CHANGELOG.md (Third Party Advisory, Release Notes)
- github.com/craftcms/cms/commit/c17728fa0bec11d3b82c34defe0930ed409aec38 (Patch, Third Party Advisory)
- github.com/craftcms/cms/blob/develop/CHANGELOG.md (Third Party Advisory, Release Notes)
Frequently asked questions
- What is CVE-2021-27903?
- CVE-2021-27903 is a critical-severity vulnerability in Craftcms Craft Cms, classified under Missing Authorization. CVSS score: 9.8/10. Published 2021-06-30.
- How severe is CVE-2021-27903?
- Critical severity. CVSS v3 base score is 9.8 out of 10.