Vulnerability · Published Sep 4, 2026 · Assigned by WPScan
CVE-2026-19224Hummingbird < 3.21.2 - Admin+ Network-Wide RCE via Hub Connector on Multisite
High 7.2
In plain English
A high-severity code injection in Hummingbird Performance from Unknown. There are no confirmed reports of exploitation so far. The chance it is exploited in the next 30 days is estimated at 0.7% (higher than 52% of all known vulnerabilities).
Severity (CVSS 3.1)7.2High
Exploit odds (30 days)0.7%top 48.0% of all CVEs
Exploited in the wildNo reportsCISA SSVC: none
Attack toolingNoneno public tooling known
Official description
The Hummingbird Performance WordPress plugin before 3.21.2 does not restrict a network-wide setting to network administrators, allowing an administrator of any single site on a multisite network to execute arbitrary code across the entire network.
Affected products (as reported)
| Vendor | Product | Versions |
|---|---|---|
| Unknown | Hummingbird Performance | 3.15.0 – before 3.21.2 |
Weakness: CWE-94 · Vector: CVSS:3.1/AV:N/AC:L/PR:H/UI:N/S:U/C:H/I:H/A:H
References
- https://wpscan.com/vulnerability/443461c5-93c4-49b4-a5c2-057b7afa4ce6/ exploit, vdb-entry, technical-description