What’s Vulnerable › Vulnerabilities

CVE-2021-42656

• Severity: medium (CVSS 5.4 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: 2022-05-24 · updated 2026-06-17
• Weakness: CWE-79

Description

SiteServer CMS V6.15.51 is affected by a Cross Site Scripting (XSS) vulnerability.

Affected products

• SiteServer CMS: 6.15.51

References

• https://github.com/siteserver/cms
• https://github.com/siteserver/cms/issues/3238
• https://github.com/siteserver/cms/releases/download/siteserver-v6.15.51/siteserver_install.zip
• https://github.com/siteserver/cms
• https://github.com/siteserver/cms/issues/3238
• https://github.com/siteserver/cms/releases/download/siteserver-v6.15.51/siteserver_install.zip

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