CVE-2026-39667 Jongmyoung Kim CVE debrief

Who should care

Users of Korea SNS plugin version 1.7.0 or earlier should review and apply patches or mitigations. Additionally, security teams and vulnerability management teams responsible for Korea SNS deployments should prioritize this vulnerability due to its Medium severity and potential for user interaction required. Platform operators and administrators should also be aware of the potential risks and take necessary precautions.

Technical summary

The Korea SNS plugin is vulnerable to DOM-Based XSS due to improper neutralization of input during web page generation. This issue affects Korea SNS from n/a through <= 1.7.0. The vulnerability has a CVSS score of 5.9 and is considered Medium severity. The technical impact is that an attacker could potentially inject malicious scripts into the web page, leading to unauthorized actions or data exposure. The exact scope of affected systems and potential impact remain unclear due to limited information.

Defensive priority

Medium priority given the CVSS score of 5.9 and the potential for user interaction required.

Recommended defensive actions

• Inventory and verify Korea SNS plugin versions
• Apply patches or updates if available
• Implement compensating controls such as web application firewalls
• Monitor for suspicious activity and exception tracking
• Review and validate affected scope and vendor guidance

Evidence notes

Evidence from Patchstack and NVD suggests a need for patching or mitigation. However, detailed impact and affected scope remain unclear. The vulnerability affects Korea SNS plugin version 1.7.0 or earlier. Users should verify their versions and consider applying patches or mitigations. The CVE record was published on 2026-04-08T09:16:38.037Z and has not been modified since then. Additional verification is required to determine the full scope of affected systems and potential impact.

Official resources