CVE-2026-86837: CWE-639 Authorization Bypass Through User-Controlled Key in Bookly
The Bookly WordPress plugin before 28.3 does not properly verify a customer's identity before updating their stored details, allowing unauthenticated attackers who know a customer's primary identifier to overwrite that customer's stored personal information such as name, email and address.
AI Analysis
Technical Summary
The Bookly WordPress plugin prior to version 28.3 contains an authorization bypass vulnerability (CWE-639) where the plugin does not properly verify a customer's identity before allowing updates to stored personal information. An attacker who knows a customer's primary identifier can exploit this flaw to overwrite that customer's details including name, email, and address without authentication.
Potential Impact
The vulnerability allows unauthorized modification of customer personal data, impacting data integrity. There is no direct confidentiality or availability impact reported. No known exploits are currently in the wild.
Mitigation Recommendations
A fix is available in Bookly version 28.3. Users should upgrade to version 28.3 or later to remediate this vulnerability. No additional mitigation steps are indicated.
CVE-2026-86837: CWE-639 Authorization Bypass Through User-Controlled Key in Bookly
Description
The Bookly WordPress plugin before 28.3 does not properly verify a customer's identity before updating their stored details, allowing unauthenticated attackers who know a customer's primary identifier to overwrite that customer's stored personal information such as name, email and address.
CVSS v3.1
Score 5.3medium
Affected software
Bookly
Weaknesses
AI-Powered Analysis
Machine-generated threat intelligence
Technical Analysis
The Bookly WordPress plugin prior to version 28.3 contains an authorization bypass vulnerability (CWE-639) where the plugin does not properly verify a customer's identity before allowing updates to stored personal information. An attacker who knows a customer's primary identifier can exploit this flaw to overwrite that customer's details including name, email, and address without authentication.
Potential Impact
The vulnerability allows unauthorized modification of customer personal data, impacting data integrity. There is no direct confidentiality or availability impact reported. No known exploits are currently in the wild.
Mitigation Recommendations
A fix is available in Bookly version 28.3. Users should upgrade to version 28.3 or later to remediate this vulnerability. No additional mitigation steps are indicated.
Technical Details
- Data Version
- 5.2
- Assigner Short Name
- WPScan
- Date Reserved
- 2026-09-08T14:41:49.614Z
- Cvss Version
- 3.1
- State
- PUBLISHED
Threat ID: 6ab63559f7a7c541069038d1
Added to database: 09/25/2026, 08:48:25 UTC
Last enriched: 09/25/2026, 09:02:42 UTC
Last updated: 09/26/2026, 02:46:32 UTC
Views: 22
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