ZM Ajax Login & Register <= 2.0.2 - Authentication Bypass

MITRE NVD CVE.ORG JSON API Print: PDF PDF

Summary

CVECVE-2023-2027
StatePUBLISHED
AssignerWordfence
Source PriorityCVE Program / NVD first with legacy fallback
Published2023-04-15 08:15:07 UTC
Updated2026-04-08 19:18:10 UTC
DescriptionThe ZM Ajax Login & Register plugin for WordPress is vulnerable to authentication bypass in versions up to, and including, 2.0.2. This is due to insufficient verification on the user being supplied during a Facebook login through the plugin. This makes it possible for unauthenticated attackers to log in as any existing user on the site, such as an administrator, if they have access to the username.

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

EPSS: 0.003300000 probability, percentile 0.559930000 (date 2026-04-09)

Problem Types: CWE-288 | CWE-287 | CWE-288 CWE-288 Authentication Bypass Using an Alternate Path or Channel

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 Zm Ajax Login Register Project Zm Ajax Login Register All All All All

Vendor Declared Affected Products

SourceVendorProductVersionPlatforms
CNA Zanematthew ZM Ajax Login Register affected 2.0.2 semver Not specified

References

ReferenceSourceLinkTags
ZM Ajax Login & Register <= 2.0.2 - Authentication Bypass af854a3a-2127-422b-91ae-364da2661108 www.wordfence.com Third Party Advisory
403 Forbidden af854a3a-2127-422b-91ae-364da2661108 plugins.trac.wordpress.org Broken Link
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: István Márton (en)

Additional Advisory Data

SourceTimeEvent
CNA2023-04-14T00:00:00.000ZDisclosed

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