CVE-2026-19224 json
Hummingbird < 3.21.2 - Admin+ Network-Wide RCE via Hub Connector on Multisite
published 2026-09-04 2 mo ago modified 2026-09-08 2 mo ago also EUVD-2026-70902
- cvss
- 7.2
- version 3.1, CNA
- cisa kev
- Not listed
- not in CISA's catalog
- epss
- 0.7%
- EPSS 0.7% chance of exploitation in 30 days, percentile 52%
- public exploits
- 0
- none known
Summary
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.
Patch / fix
- Unknown Hummingbird Performance 3.21.2
CISA SSVC
- Exploitation
- none
- Automatable
- no
- Technical impact
- total
- Assessed
- 2 mo ago
Exploit prediction
0.66% chance of exploitation in the next 30 days, higher than 52% of all scored CVEs (FIRST EPSS, 2026-11-08).
Exploits and checks
- wpscan.com https://wpscan.com/vulnerability/443461c5-93c4-49b4-a5c2-057b7afa4ce6/ referenced PoC, tagged "exploit" by a source, unverified
CVSS scores
| assigned by | version | score | vector |
|---|---|---|---|
| CISA ADP | 3.1 | 7.2 | CVSS:3.1/AV:N/AC:L/PR:H/UI:N/S:U/C:H/I:H/A:H |
| CNA | 3.1 | 7.2 | CVSS:3.1/AV:N/AC:L/PR:H/UI:N/S:U/C:H/I:H/A:H |
Affected products
- Unknown Hummingbird Performance
Classification
- Weakness
-
- CWE-94 Improper Control of Generation of Code
- Technology feeds
References
-
wpscan.com
/vulnerability/443461c5-93c4-49b4-a5c2-057b7afa4ce6/
exploit, vdb-entry, technical-description
Sources
- CVE List CVE-2026-19224
- NVD CVE-2026-19224
Fencer Vulns keeps one entry per vulnerability: the CVE id wins, then GHSA, and records that alias each other are merged, except that two CVEs always keep separate entries. The same data is available as JSON.