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CVE-2026-81286 – Unauthenticated SQL Injection – WCFM Marketplace WordPress Plugin ≤ 3.8.1

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Summary

CVE-2026-81286 is an unauthenticated SQL Injection vulnerability (CWE-89) affecting the WCFM Marketplace WordPress plugin (package wc-multivendor-marketplace) developed by WC Lovers. The flaw affects versions up to and including 3.8.1 and allows remote attackers to inject malicious SQL without any authentication or user interaction. It carries a CVSS v3.1 base score of 9.3 (Critical).

Technical details

  • Root cause: improper neutralization of special elements used in an SQL command, allowing attacker-controlled input to be incorporated into a database query.
  • Trigger conditions: no authentication or privileges are required, and no user interaction is needed to exploit the flaw.
  • Attack vector: network-based, exploitable remotely against any internet-exposed site running the vulnerable plugin.
  • Impact: the CVSS vector indicates a scope change with high confidentiality impact and low availability impact, consistent with unauthorized data extraction via blind SQL injection.

Affected software

  • WCFM Marketplace (WC Lovers) — versions up to and including 3.8.1

Severity

  • CVSS v3.1 Base Score: 9.3 (Critical)
  • Vector: CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:C/C:H/I:N/A:L

Mitigation and recommended actions

  • Immediate: Update the WCFM Marketplace plugin to version 3.8.2 or later, which resolves this vulnerability.
  • If immediate patching is not possible, restrict or monitor access to the plugin’s exposed endpoints and consider a web application firewall rule targeting SQL injection patterns as a temporary compensating control until the update can be applied.

References

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