CVE-2026-1890
MediumExploitedPublic exploitLeadConnector < 3.0.22 - Unauthenticated Rest Call
Published Mar 26, 2026 · Updated Apr 9, 2026 · Also known as 21552524-9f3f-4ef1-b8bc-9eb6ebfaac12
Key Facts
Patch immediately- CVE-2026-1890 is a medium-severity vulnerability (CVSS 5.3 v3.1) affecting LeadConnector (wordpress-plugin).
- It is exploited in the wild, listed in Industry KEV feed since Apr 30, 2026. Public exploit code is available.
- EPSS estimates a 0.7% probability of exploitation in the next 30 days.
- Fixed versions are available, including LeadConnector 3.0.22.
- Brandefense priority: patch immediately, because it is listed as exploited in the wild.
CVSS v3.1
5.3
CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:L/A:N
EPSS (30-day exploit likelihood)
0.7%
Higher than 51.5% of all scored CVEs
Exploited in the wild
Yes
1 catalog listing
Public exploit code
Available
Proof-of-concept or weaponized module
Get the full CVE-2026-1890 brief as a PDF
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Description
The LeadConnector WordPress plugin before 3.0.22 does not have authorization in a REST route, allowing unauthenticated users to call it and overwrite existing data
Known-Exploited Catalog Listings
| Catalog | Added | Remediation due | Ransomware use |
|---|---|---|---|
| Industry KEV feed | Apr 30, 2026 | n/a | Not reported |
Required action: Apply remediations or mitigations per vendor instructions or discontinue use of the product if remediation or mitigations are unavailable.
Affected Products
2 affected entries in total| Product | Affected versions | Fixed in |
|---|---|---|
| LeadConnectorwordpress-plugin | See advisory | 3.0.22 |
Patched Releases
LeadConnector
3.0.22
Timeline
Publicly disclosed
Mar 26, 2026
Last updated
Apr 9, 2026
Added to Industry KEV feed
Apr 30, 2026
Weakness Type
- CWE-862 Missing Authorization
References
- advisoryhttps://www.wordfence.com/threat-intel/vulnerabilities/id/21552524-9f3f-4ef1-b8bc-9eb6ebfaac12?source=api-prod
- advisoryhttps://www.wordfence.com/threat-intel/vulnerabilities/id/21552524-9f3f-4ef1-b8bc-9eb6ebfaac12?source=api-scan
- exploitVulnCheck exploitation report
- exploithttps://wpscan.com/vulnerability/9b88be70-b5cc-4a3f-a871-64d61cb02076/
FAQ
Common Questions.
The LeadConnector WordPress plugin before 3.0.22 does not have authorization in a REST route, allowing unauthenticated users to call it and overwrite existing data
Affected: LeadConnector (wordpress-plugin). The full list is in the CVE brief.
It is exploited in the wild, listed in Industry KEV feed since Apr 30, 2026.
No, it is not currently listed in the CISA Known Exploited Vulnerabilities catalog.
Public exploit code is available.
Fixed versions are available, including LeadConnector 3.0.22.
Brandefense priority: patch immediately, because it is listed as exploited in the wild.
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