Visa Acceptance Solutions <= 2.1.0 - Unauthenticated Authentication Bypass via Billing Email

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Summary

CVECVE-2026-3461
StatePUBLISHED
AssignerWordfence
Source PriorityCVE Program / NVD first with legacy fallback
Published2026-04-15 09:16:31 UTC
Updated2026-04-22 20:23:16 UTC
DescriptionThe Visa Acceptance Solutions plugin for WordPress is vulnerable to Authentication Bypass in all versions up to, and including, 2.1.0. This is due to the `express_pay_product_page_pay_for_order()` function logging users in based solely on a user-supplied billing email address during guest checkout for subscription products, without verifying email ownership, requiring a password, or validating a one-time token. This makes it possible for unauthenticated attackers to log in as any existing user, including administrators, by providing the target user's email address in the billing_details parameter, resulting in complete account takeover and site compromise.

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: 0.002010000 probability, percentile 0.421980000 (date 2026-04-22)

Problem Types: CWE-288 | 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
3.1CNADECLARED9.8CRITICALCVSS: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

Vendor Declared Affected Products

SourceVendorProductVersionPlatforms
CNA Visaacceptancesolutions Visa Acceptance Solutions affected 2.1.0 semver Not specified

References

ReferenceSourceLinkTags
plugins.trac.wordpress.org/browser/visa-acceptance-solutions/trunk/public/class-visa-acc... [email protected] plugins.trac.wordpress.org
www.wordfence.com/threat-intel/vulnerabilities/id/8d3aea10-d7a0-44bd-94dc-3bad0... [email protected] www.wordfence.com
plugins.trac.wordpress.org/browser/visa-acceptance-solutions/tags/2.1.0/public/class-vis... [email protected] plugins.trac.wordpress.org
plugins.trac.wordpress.org/browser/visa-acceptance-solutions/tags/2.1.0/public/class-vis... [email protected] plugins.trac.wordpress.org
plugins.trac.wordpress.org/browser/visa-acceptance-solutions/trunk/public/class-visa-acc... [email protected] plugins.trac.wordpress.org
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: Jude Nwadinobi (en)

Additional Advisory Data

SourceTimeEvent
CNA2026-04-14T19:51:38.000ZDisclosed
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