What’s Vulnerable › Vulnerabilities

CVE-2021-21336: Exposure of Sensitive Information to an Unauthorized Actor in Products.PluggableAuthService ZODBRoleManager

• Severity: medium (CVSS 6.5 v3.1)
• Exploited in the wild: not listed in CISA KEV
• EPSS: 1.5% probability of exploitation in the next 30 days
• Public exploit or detection template: none known
• Published: 2021-03-08 · updated 2026-06-17
• Weakness: CWE-200

Description

Products.PluggableAuthService is a pluggable Zope authentication and authorization framework. In Products.PluggableAuthService before version 2.6.0 there is an information disclosure vulnerability - everyone can list the names of roles defined in the ZODB Role Manager plugin if the site uses this plugin. The problem has been fixed in version 2.6.0. Depending on how you have installed Products.PluggableAuthService, you should change the buildout version pin to 2.6.0 and re-run the buildout, or if you used pip simply do `pip install "Products.PluggableAuthService>=2.6.0"`.

Affected products

• Plone CMS: from 4.3.0 through 4.3.20; from 5.0 through 5.2.4
• zopefoundation Products.PluggableAuthService: before 2.6.0 — fixed in 2.6.0

How to fix

Upgrade to a fixed version: zopefoundation Products.PluggableAuthService 2.6.0. Check the vendor advisory for mitigations.

References

• http://www.openwall.com/lists/oss-security/2021/05/21/1
• http://www.openwall.com/lists/oss-security/2021/05/22/1
• https://github.com/zopefoundation/Products.PluggableAuthService/commit/2dad81128250cb2e5d950cddc9d3c0314a80b4bb
• https://github.com/zopefoundation/Products.PluggableAuthService/security/advisories/GHSA-p75f-g7gx-2r7p
• https://pypi.org/project/Products.PluggableAuthService/
• http://www.openwall.com/lists/oss-security/2021/05/21/1
• http://www.openwall.com/lists/oss-security/2021/05/22/1
• https://github.com/zopefoundation/Products.PluggableAuthService/commit/2dad81128250cb2e5d950cddc9d3c0314a80b4bb
• https://github.com/zopefoundation/Products.PluggableAuthService/security/advisories/GHSA-p75f-g7gx-2r7p
• https://pypi.org/project/Products.PluggableAuthService/

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