What’s Vulnerable › Vulnerabilities

CVE-2024-51734: User data deletion by anoynmous users in Zope

• Severity: high (CVSS 8.7 v4.0)
• Exploited in the wild: not listed in CISA KEV
• EPSS: 0.4% probability of exploitation in the next 30 days
• Public exploit or detection template: none known
• Published: 2024-11-04 · updated 2026-06-17
• Weakness: CWE-284

Description

Zope AccessControl provides a general security framework for use in Zope. In affected versions anonymous users can delete the user data maintained by an `AccessControl.userfolder.UserFolder` which may prevent any privileged access. This problem has been fixed in version 7.2. Users are advised to upgrade. Users unable to upgrade may address the issue by adding `data__roles__ = ()` to `AccessControl.userfolder.UserFolder`.

Affected products

• zopefoundation AccessControl: before 7.2; before 5.11.1 — fixed in 5.11.1, 7.2

How to fix

Upgrade to a fixed version: zopefoundation AccessControl 5.11.1, 7.2. Check the vendor advisory for mitigations.

References

• https://github.com/zopefoundation/AccessControl/issues/159
• https://github.com/zopefoundation/AccessControl/security/advisories/GHSA-g5vw-3h65-2q3v

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