Auth bypass in Learnsite Project
CVE-2021-27522
Learnsite 1.2.5.0 contains a remote privilege escalation vulnerability in /Manager/index.aspx through the JudgIsAdmin() function. By modifying the initial letter of the key of a user cookie, the key of the administrator cookie can be obtained.
Vulnerability class: Broken Authentication
Published · last modified .
CVSS v3 metric
CVSS v3 base score 8.8 (High). Vector: CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:H.
EPSS exploit prediction
EPSS: 0.011 (64.8th percentile), scored .
Low probability of exploitation in the next 30 days, but still tracked. 65th percentile — 64.8% of CVEs in the catalogue have a lower EPSS than this one. How to read EPSS.
EPSS over last 30 days · oldest: 0.011 · newest: 0.011 · change: 0.000
Affected products
- Learnsite Project — versions 1.2.5.0
Weakness classification (CWE)
References
- github.com/WaterCountry/Learnsite/issues/1 (Exploit, Third Party Advisory, Issue Tracking)
Frequently asked questions
- What is CVE-2021-27522?
- CVE-2021-27522 is a high-severity vulnerability in Learnsite Project, classified under Improper Authentication. CVSS score: 8.8/10. Published 2021-04-08.
- How severe is CVE-2021-27522?
- High severity. CVSS v3 base score is 8.8 out of 10.