What’s Vulnerable › Vulnerabilities

CVE-2020-15864

• Severity: medium (CVSS 6.1 v3.1)
• Exploited in the wild: not listed in CISA KEV
• EPSS: 0.7% probability of exploitation in the next 30 days
• Public exploit or detection template: yes
• Published: 2021-01-17 · updated 2026-06-17
• Weakness: CWE-79

Description

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.

Affected products

• Quali Cloudshell: 9.3

References

• https://burninatorsec.blogspot.com/2020/10/cve-2020-xxxxx-xss-in-quali-cloudshell.html
• https://www.quali.com/products/cloudshell-pro/
• https://burninatorsec.blogspot.com/2020/10/cve-2020-xxxxx-xss-in-quali-cloudshell.html
• https://www.quali.com/products/cloudshell-pro/

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