CVE-2026-103646

Published 8 October 2026 · tracked since 8 October 2026

Description

The Ultimate Multisite WordPress plugin before 2.17.0 does not require authentication before a logged-out checkout is linked to, and logged in as, an existing WordPress account matching the submitted email address, and its duplicate-account check normalizes that address differently from the lookup

References

• NVD — National Vulnerability Database
• CVE.org record (MITRE)
• CISA Known Exploited Vulnerabilities catalog

Latest tracked vulnerabilities

• CVE-2026-107573 HIGH 7.8
• CVE-2026-107275 MEDIUM 6.8
• CVE-2026-93509 MEDIUM 6.5
• CVE-2026-104660 HIGH 7.8
• CVE-2026-104671 MEDIUM 5.3
• CVE-2026-105190 MEDIUM 5.3
• CVE-2026-103649 HIGH 7.5
• CVE-2026-103010 HIGH 7.8
• CVE-2026-103011 MEDIUM 6.5
• CVE-2026-103517 MEDIUM 5.3

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