OTP Login & Register Woocommerce <= 2.7.2 - Unauthenticated Authentication Bypass via Brute Force

MITRE NVD CVE.ORG JSON API

Summary

CVECVE-2026-12215
StatePUBLISHED
AssignerWordfence
Source PriorityCVE Program / NVD first with legacy fallback
Published2026-09-11 04:17:20 UTC
Updated2026-09-11 04:17:20 UTC
DescriptionThe OTP Login & Register Woocommerce plugin for WordPress is vulnerable to Authentication Bypass via OTP Brute Force in all versions up to, and including, 2.7.2. The vulnerability exists because the OTP rate-limit attempt counter in `process_otp_form` is keyed exclusively on the attacker-controlled `xoo_ml_user_ip_data` cookie's `ip_address` field, allowing unlimited counter resets by simply rotating the cookie, while the OTP itself is generated with PHP's non-cryptographic `rand()` function over a default space of only 9,000 possible values (1000–9999), and both the OTP issuance endpoint (`xoo_ml_login_with_otp`) and verification endpoint (`xoo_ml_otp_form_submit`) are registered as unauthenticated `wp_ajax_nopriv` actions with no nonce or capability checks. This makes it possible for unauthenticated attackers to brute-force the OTP for any registered account and obtain a full WordPress authentication session — including for administrator accounts — via `wp_set_auth_cookie()` in `login_user_with_otp()`. Exploitation requires the attacker to know the target user's registered phone number, which is used to trigger OTP issuance via the unauthenticated `xoo_ml_login_with_otp` endpoint.

Risk And Classification

Primary CVSS: v3.1 5.3 MEDIUM from [email protected]

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

Problem Types: CWE-434 | CWE-434 CWE-434 Unrestricted Upload of File with Dangerous Type

VersionSourceTypeScoreSeverityVector
3.1[email protected]Primary5.3MEDIUMCVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:L/A:N
3.1CNADECLARED5.3MEDIUMCVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:L/A:N

CVSS v3.1 Breakdown

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

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

Vendor Declared Affected Products

SourceVendorProductVersionPlatforms
CNA Xootix OTP Login Register Woocommerce affected 2.7.2 semver Not specified

References

ReferenceSourceLinkTags
plugins.trac.wordpress.org/changeset [email protected] plugins.trac.wordpress.org
www.wordfence.com/threat-intel/vulnerabilities/id/4bd4b379-6d7d-4cfe-bb16-a931c... [email protected] www.wordfence.com
plugins.trac.wordpress.org/browser/mobile-login-woocommerce/tags/2.7.2/includes/class-xo... [email protected] plugins.trac.wordpress.org
plugins.trac.wordpress.org/browser/mobile-login-woocommerce/tags/2.7.2/includes/class-xo... [email protected] plugins.trac.wordpress.org
plugins.trac.wordpress.org/browser/mobile-login-woocommerce/tags/2.7.2/includes/class-xo... [email protected] plugins.trac.wordpress.org
plugins.trac.wordpress.org/browser/mobile-login-woocommerce/tags/2.7.2/includes/class-xo... [email protected] plugins.trac.wordpress.org
plugins.trac.wordpress.org/browser/mobile-login-woocommerce/tags/2.7.2/includes/class-xo... [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: d4ngvn (en)

Additional Advisory Data

SourceTimeEvent
CNA2026-09-01T16:51:16.000ZVendor Notified
CNA2026-09-10T14:39:11.000ZDisclosed

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