WCFM Membership <= 2.10.0 - Unauthenticated Privilege Escalation

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Summary

CVECVE-2022-4939
StatePUBLISHED
AssignerWordfence
Source PriorityCVE Program / NVD first with legacy fallback
Published2023-04-05 19:15:07 UTC
Updated2026-04-08 17:16:47 UTC
DescriptionTHe WCFM Membership plugin for WordPress is vulnerable to privilege escalation in versions up to, and including 2.10.0, due to a missing capability check on the wp_ajax_nopriv_wcfm_ajax_controller AJAX action that controls membership settings. This makes it possible for unauthenticated attackers to modify the membership registration form in a way that allows them to set the role for registration to that of any user including administrators. Once configured, the attacker can then register as an administrator.

Risk And Classification

Primary CVSS: v3.1 9.8 CRITICAL from [email protected]

CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H

Problem Types: CWE-862 | CWE-862 CWE-862 Missing Authorization

VersionSourceTypeScoreSeverityVector
3.1[email protected]Primary9.8CRITICALCVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H
3.1[email protected]Secondary9.8CRITICALCVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H
3.1CNADECLARED9.8CRITICALCVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H

CVSS v3.1 Breakdown

Attack Vector
Network
Attack Complexity
Low
Privileges Required
None
User Interaction
None
Scope
Unchanged
Confidentiality
High
Integrity
High
Availability
High

CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H

NVD Known Affected Configurations (CPE 2.3)

TypeVendorProductVersionUpdateEditionLanguage
Application Wclovers Wcfm Membership All All All All

Vendor Declared Affected Products

SourceVendorProductVersionPlatforms
CNA Wclovers WCFM Membership WooCommerce Memberships For Multivendor Marketplace affected 2.10.0 semver Not specified

References

ReferenceSourceLinkTags
403 Forbidden af854a3a-2127-422b-91ae-364da2661108 plugins.trac.wordpress.org Patch
WCFM Membership <= 2.10.0 - Unauthenticated Privilege Escalation af854a3a-2127-422b-91ae-364da2661108 www.wordfence.com Patch, Third Party Advisory
CVE Program record CVE.ORG www.cve.org canonical
NVD vulnerability detail NVD nvd.nist.gov canonical, analysis

Vendor Comments And Credit

Discovery Credit

CNA: Chloe Chamberland (en)

Additional Advisory Data

SourceTimeEvent
CNA2023-04-05T00:00:00.000ZDisclosed
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