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CVE-2026-88828— Blacklist Manager for WooCommerce 1.3.0 - 2.3.1 - Blocked User Restriction Bypass via XML-RPC and Application Passwords

Quick assessment

Affected
Unknown Blacklist Manager
Exploitation
No confirmed in-the-wild exploitation; assess based on exposure
Recommended action
Check the vendor advisory and references for a fixed version. If immediate upgrade is impossible, restrict exposure and increase monitoring.

WooCommerce WordPress 插件中的黑名单管理器（Blacklist Manager）在 1.3.0 到 2.3.1 版本中存在安全漏洞，该漏洞未能对所有的身份验证路径强制执行用户封锁机制。这意味着，即使网站管理员已经封禁了某个账户，该账户的持有者仍可以使用此账户以相应的权限进行身份验证，而不会受到封锁限制，且封锁行为不会被记录。

CVSS 5.4 · Medium

Possible ATT&CK Techniques 1 AI

T1199 · Trusted Relationship
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I. Basic Information for CVE-2026-88828

Vulnerability Information
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Vulnerability Title
Blacklist Manager for WooCommerce 1.3.0 - 2.3.1 - Blocked User Restriction Bypass via XML-RPC and Application Passwords
Source: CVE Program / CVE List V5
Vulnerability Description
The Blacklist Manager for WooCommerce WordPress plugin from 1.3.0 to 2.3.1 does not enforce its user blocking on every authentication path, allowing the holder of an account the site owner has blocked to keep authenticating with that account's privileges, without the block being enforced or recorded.
Source: CVE Program / CVE List V5
CVSS Information
CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:U/C:L/I:L/A:N
Source: CVE Program / CVE List V5
Vulnerability Type
N/A
Source: CVE Program / CVE List V5

Affected Products

Vendor Product Affected Versions CPE Subscribe
Unknown Blacklist Manager 1.3.0 ~ 2.3.2 -

II. Public POCs for CVE-2026-88828

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III. Intelligence Information for CVE-2026-88828

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Other References for CVE-2026-88828 (1)

Same Patch Batch · Unknown · 2026-09-28 · 8 CVEs total

CVE-2026-84744 6.5 MEDIUM WPForms Lite 1.5.0.1 - 2.0.2 - Unauthenticated Arbitrary Shortcode Execution via Form Fiel
CVE-2026-92996 5.3 MEDIUM Verge3D 4.1.0 - 4.13.0 - Unauthenticated Payment Bypass via v3d_payment_done
CVE-2026-89411 5.3 MEDIUM Paymattic < 4.6.26 - Unauthenticated Payment Bypass via Unbound Stripe PaymentIntent
CVE-2026-86838 5.3 MEDIUM Bookly < 28.3 - Unauthenticated Payment Bypass via Booking Price Manipulation
CVE-2026-93000 SPS-Suite <= 1.4.0 - Unauthenticated Time-Based SQLi via Search
CVE-2026-89300 WP Verify API <= 1.0.0 - Unauthenticated Verification Code Email Sending to Arbitrary Reci
CVE-2026-89303 Post Voting System <= 1.0 - Subscriber+ SQLi via 'row' Parameter

IV. Related Vulnerabilities

Same vendor: Unknown

V. Comments for CVE-2026-88828

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