CVE-2026-28180: CWE-639 Authorization Bypass Through User-Controlled Key in Mercado Pago Mercado Pago payments for WooCommerce
CVE-2026-28180 is a medium severity vulnerability in Mercado Pago payments for WooCommerce versions up to and including 8.9.0. It involves an unauthenticated Insecure Direct Object Reference (IDOR) vulnerability, classified under CWE-639, which allows authorization bypass through a user-controlled key. This vulnerability could allow an attacker to access certain resources without proper authorization. No official patch or remediation guidance is currently available from the vendor.
AI Analysis
Technical Summary
This vulnerability (CVE-2026-28180) affects Mercado Pago payments for WooCommerce versions <= 8.9.0. It is an unauthenticated Insecure Direct Object Reference (IDOR) vulnerability, CWE-639, that permits authorization bypass via a user-controlled key. The CVSS 3.1 base score is 5.3 (medium severity), with network attack vector, low attack complexity, no privileges required, no user interaction, and limited confidentiality impact. No official remediation or patch has been disclosed, and there are no known exploits in the wild.
Potential Impact
An attacker can bypass authorization controls without authentication by exploiting the IDOR vulnerability, potentially gaining unauthorized access to certain resources or data. The impact is limited to confidentiality loss; integrity and availability are not affected. The medium CVSS score reflects the moderate risk posed by this vulnerability.
Mitigation Recommendations
Patch status is not yet confirmed — check the vendor advisory for current remediation guidance. Since no official fix or temporary workaround is currently documented, users should monitor vendor communications for updates. Until a patch is available, restricting access to the affected plugin or disabling it may reduce exposure.
CVE-2026-28180: CWE-639 Authorization Bypass Through User-Controlled Key in Mercado Pago Mercado Pago payments for WooCommerce
Description
CVE-2026-28180 is a medium severity vulnerability in Mercado Pago payments for WooCommerce versions up to and including 8.9.0. It involves an unauthenticated Insecure Direct Object Reference (IDOR) vulnerability, classified under CWE-639, which allows authorization bypass through a user-controlled key. This vulnerability could allow an attacker to access certain resources without proper authorization. No official patch or remediation guidance is currently available from the vendor.
CVSS v3.1
Score 5.3medium
Affected software
Mercado Pago
Mercado Pago payments for WooCommerce
Weaknesses
AI-Powered Analysis
Machine-generated threat intelligence
Technical Analysis
This vulnerability (CVE-2026-28180) affects Mercado Pago payments for WooCommerce versions <= 8.9.0. It is an unauthenticated Insecure Direct Object Reference (IDOR) vulnerability, CWE-639, that permits authorization bypass via a user-controlled key. The CVSS 3.1 base score is 5.3 (medium severity), with network attack vector, low attack complexity, no privileges required, no user interaction, and limited confidentiality impact. No official remediation or patch has been disclosed, and there are no known exploits in the wild.
Potential Impact
An attacker can bypass authorization controls without authentication by exploiting the IDOR vulnerability, potentially gaining unauthorized access to certain resources or data. The impact is limited to confidentiality loss; integrity and availability are not affected. The medium CVSS score reflects the moderate risk posed by this vulnerability.
Mitigation Recommendations
Patch status is not yet confirmed — check the vendor advisory for current remediation guidance. Since no official fix or temporary workaround is currently documented, users should monitor vendor communications for updates. Until a patch is available, restricting access to the affected plugin or disabling it may reduce exposure.
Technical Details
- Data Version
- 5.2
- Assigner Short Name
- Patchstack
- Date Reserved
- 2026-02-25T12:14:40.739Z
- Cvss Version
- 3.1
- State
- PUBLISHED
Threat ID: 6a749d34bf8831d539db9daa
Added to database: 08/06/2026, 14:41:56 UTC
Last enriched: 08/13/2026, 17:20:45 UTC
Last updated: 09/21/2026, 22:01:33 UTC
Views: 31
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