What’s Vulnerable › Vulnerabilities

CVE-2020-9311

• Severity: medium (CVSS 5.4 v3.1)
• Exploited in the wild: not listed in CISA KEV
• EPSS: 0.6% probability of exploitation in the next 30 days
• Public exploit or detection template: none known
• Published: 2020-07-15 · updated 2026-06-17
• Weakness: CWE-79

Description

In SilverStripe through 4.5, malicious users with a valid Silverstripe CMS login (usually CMS access) can craft profile information which can lead to XSS for other users through specially crafted login form URLs.

Affected products

• Silverstripe: from 3.0.0 before 3.7.5 — fixed in 3.7.5

How to fix

Upgrade to a fixed version: Silverstripe 3.7.5. Check the vendor advisory for mitigations.

References

• https://www.silverstripe.org/download/security-releases/CVE-2020-9311
• https://www.silverstripe.org/download/security-releases/CVE-2020-9311

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