What’s Vulnerable › Vulnerabilities

CVE-2021-41559

• Severity: medium (CVSS 6.5 v3.1)
• Exploited in the wild: not listed in CISA KEV
• EPSS: 1.1% probability of exploitation in the next 30 days
• Public exploit or detection template: none known
• Published: 2022-06-28 · updated 2026-06-17
• Weakness: CWE-776

Description

Silverstripe silverstripe/framework 4.8.1 has a quadratic blowup in Convert::xml2array() that enables a remote attack via a crafted XML document.

Affected products

• Silverstripe: before 4.10.9 — fixed in 4.10.9

How to fix

Upgrade to a fixed version: Silverstripe 4.10.9. Check the vendor advisory for mitigations.

References

• https://github.com/silverstripe/silverstripe-framework/releases
• https://www.silverstripe.org/download/security-releases/
• https://www.silverstripe.org/download/security-releases/cve-2021-41559
• https://github.com/silverstripe/silverstripe-framework/releases
• https://www.silverstripe.org/download/security-releases/
• https://www.silverstripe.org/download/security-releases/cve-2021-41559

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