XSS in Quali Cloudshell
CVE-2020-15864
An issue was discovered in Quali CloudShell 9.3. An XSS vulnerability in the login page allows an attacker to craft a URL, with a constructor.constructor substring in the username field, that executes a payload when the user visits the /Account/Login page.
Vulnerability class: XSS (Cross-Site Scripting)
Published · last modified .
CVSS v3 metric
CVSS v3 base score 6.1 (Medium). Vector: CVSS:3.1/AV:N/AC:L/PR:N/UI:R/S:C/C:L/I:L/A:N.
EPSS exploit prediction
EPSS: 0.007 (51.5th percentile), scored .
Very low probability of exploitation in the next 30 days; routine patching cadence is appropriate. 52nd percentile — 51.5% of CVEs in the catalogue have a lower EPSS than this one. How to read EPSS.
EPSS over last 30 days · oldest: 0.007 · newest: 0.007 · change: 0.000
Affected products
- Quali Cloudshell — versions 9.3
Weakness classification (CWE)
References
- www.quali.com/products/cloudshell-pro/ (Vendor Advisory)
- burninatorsec.blogspot.com/2020/10/cve-2020-xxxxx-xss-in-quali-cloudshell.html (Exploit, Third Party Advisory)
Frequently asked questions
- What is CVE-2020-15864?
- CVE-2020-15864 is a medium-severity vulnerability in Quali Cloudshell, classified under Cross-site Scripting. CVSS score: 6.1/10. Published 2021-01-17.
- How severe is CVE-2020-15864?
- Medium severity. CVSS v3 base score is 6.1 out of 10.