CVE-2021-21336Network attack vector

Role-name disclosure via unrestricted enumerateRoles access

Published Mar 8, 2021 · Updated Aug 3, 2024

Information disclosure in Products.PluggableAuthService before 2.6.0 allows remote authenticated users to list ZODB role names. ZODBRoleManager.enumerateRoles lacks a private security declaration, exposing role enumeration to callers without explicit authorization. The site must use the ZODB Role Manager plugin; the flaw reveals configured role names but does not modify roles or service state.

CVSS severity6.5
Medium
EPSS probability1.50%
Next 30 days · Sep 16, 2026
Known exploitationUnconfirmed
Based on sourced intelligence
Hinoki checkNot available
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Summary

What happened

Information disclosure in Products.PluggableAuthService before 2.6.0 allows remote authenticated users to list ZODB role names. ZODBRoleManager.enumerateRoles lacks a private security declaration, exposing role enumeration to callers without explicit authorization. The site must use the ZODB Role Manager plugin; the flaw reveals configured role names but does not modify roles or service state.

The record

CVE
CVE-2021-21336
Published
Mar 8, 2021
Updated
Aug 3, 2024
Vendor
Zope Foundation
Product
Products.PluggableAuthService
Classifications
CWE-200, T1069
Attack vector
network
Privileges
authenticated

Timeline

How it unfolded

  1. Mar 8, 2021CVE publishedPublication date reported by the CVE source.
  2. Aug 3, 2024Record updatedLatest update available in the CVE record.

Exploitability

Present is not the same as exploitable

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Is a vulnerable build present?

Compare these published version ranges with your installed build and any vendor patches.

  1. Affected versionversion=< 2.6.0

What conditions does exploitation require?

Attack vectornetwork
Required privilegesauthenticated

What is affected?

Zope Foundation · Products.PluggableAuthServiceversion=< 2.6.0

Published CVSS scores

6.5GitHub, Inc.CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:U/C:H/I:N/A:N
4.0NIST NVDAV:N/AC:L/Au:S/C:P/I:N/A:N

CVSS describes severity. EPSS estimates exploitation probability.

Attacks

What attackers are doing with it

Daily unique IPs observed by Shadowserver honeypots for known exploited vulnerabilities (KEVs). Missing observations do not establish an absence of attacks.

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No observations available

Sep 10, 2026Sep 16, 2026
Latest reporting daySep 16, 2026
Latest daily unique IPsUnavailable
Prior 30-day averageUnavailable
SourceShadowserver honeypots (KEV)
Vectornetwork
Privilegesauthenticated
Known exploitationUnconfirmed
Public exploitUnconfirmed

Weakness, pattern, technique

CWE-200Exposure of Sensitive Information to an Unauthorized Actor
T1069Permission Groups Discovery

Public exploit references

No public exploit references are available in this record.

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Technologies

Your stack

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Your stack

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