CVE-2026-19224: unknown hummingbird performance Code Injection
CVSS: 7.2v3.1HighDeferred
Published 04-09-2026Last modified 04-09-2026
Vulnerability summary
CVE-2026-19224 is a high (CVSS 7.2) Code Injection vulnerability in unknown hummingbird performance. EPSS estimates a 0.37% chance of exploitation in the next 30 days, higher than 29.4% of scored vulnerabilities. 1 public exploit is recorded. Fixed in 3.21.2.
CVSS score
7.2/10
010
High · v3.1 (CVE.org)EPSS score
0.37%
0%100%
Low · 0.00 pp in 30 daysKEVNot listedIn no KEV catalog
RansomwareNone recordedNo known use recorded
Public exploits1reference
Timeline
- 04-09-2026PublishedVulnerability first disclosed.
- 04-09-2026Last modifiedVulnerability information updated.
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.
CVSS metrics
3 scores · 3 sources · 1 versionHigh 7.2Preferred score · CVE.org (CNA)
CVSS:3.1/AV:N/AC:L/PR:H/UI:N/S:U/C:H/I:H/A:HSourcesAll 3 agree
- NVDNIST7.2HighCVSS:3.1/AV:N/AC:L/PR:H/UI:N/S:U/C:H/I:H/A:H
- wordfenceSource7.2HighCVSS:3.1/AV:N/AC:L/PR:H/UI:N/S:U/C:H/I:H/A:H
EPSS trend
Probability
0.37%
Chance of exploitation in the next 30 days
Percentile
29%
Versus all other CVEs
30-day change
0.00 pp
From 0.37% on 19-09-2026
19-09-202619-10-2026
EPSS score0.37%
Known exploited
Compare KEV catalogsNot in any of the 3 tracked catalogs.
Public exploits
1 foundExploit Reference (wpscan.com)
Maturity: unknown
Weaknesses
CWE · root causeAffected systems
Unknown1 product
- hummingbird performance≥ 3.15.0, < 3.21.2
Wordpress1 product
- hummingbird-performance< 3.21.2
2 vendors · 2 products