CVE-2026-73381
Unauthenticated auth bypass in Popup by Supsystic plugin enabling malicious popups/site compromise
Is CVE-2026-73381 being exploited?
Not confirmed. CVE-2026-73381 does not appear in CISA's Known Exploited Vulnerabilities catalog, which records only exploitation that has been observed and reported publicly. That is evidence of absence of a report, not evidence the flaw is unattacked. EPSS currently estimates a 0.51% probability of exploitation in the next 30 days.
How severe is CVE-2026-73381?
CVE-2026-73381 is rated Critical with a CVSS score of 9.1. Severity describes how bad exploitation would be, not how likely it is: pair it with exploitation evidence before deciding what to patch first.
Is there a patch for CVE-2026-73381?
Not known from our data. No patch reference has been recorded for CVE-2026-73381, which is not the same as no patch existing — a fix may have shipped without a tagged reference, or after this record was written. The vendor advisory is the only authority on whether a fix exists, and mitigations may be available regardless.
What does CVE-2026-73381 affect?
CVE-2026-73381 affects Popup by Supsystic <=1.13.0 (WordPress plugin), WordPress sites using this plugin. Confirm the exact affected versions against the vendor advisory before deciding you are exposed.
What should I do about CVE-2026-73381?
Remove or update plugin when patched; restrict wp-admin access; scan for injected popups and remediate.
Exploitation status reflects CISA's KEV catalog as we last synced it. Check the catalog directly.
Unauthenticated attacker can bypass plugin auth to create/modify popups, inject JS/redirects, deliver malware and potentially escalate to admin/site takeover.
Immediate action required
- affected<= 1.13.0
As published in the CVE Program record. A version outside these ranges is not a statement that it is unaffected — vendors sometimes understate a range, and distribution-backported builds carry upstream numbers that do not reflect what was patched into them.