CVE-2026-73533
Tampered Ninja Tables Pro build creates backdoor admin and persistent PHP backdoors
Is CVE-2026-73533 being exploited?
Not confirmed. CVE-2026-73533 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 0.45% probability of exploitation in the next 30 days.
How severe is CVE-2026-73533?
CVE-2026-73533 is rated Critical with a CVSS score of 9.3. 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-2026-73533?
Not known from our data. No patch reference has been recorded for CVE-2026-73533, 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-2026-73533 affect?
CVE-2026-73533 affects Ninja Tables Pro (tampered build, 5.2.11), WordPress sites with the plugin installed, Sites with writable wp-content/uploads and mu-plugins. Confirm the exact affected versions against the vendor advisory before deciding you are exposed.
What should I do about CVE-2026-73533?
Isolate sites, remove plugin, delete rogue files/accounts, rotate creds, restore clean backups, apply vendor patch when available
Exploitation status reflects CISA's KEV catalog as we last synced it. Check the catalog directly.
Remote persistent backdoor: attackers can create passwordless admin, execute PHP, persist in mu-plugins/uploads, survive plugin removal and fully compromise sites.
Immediate action required
- affected5.2.11
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.