CVE-2026-1890 json
LeadConnector < 3.0.22 - Unauthenticated Rest Call
published 2026-03-26 7 mo ago modified 2026-06-17 4 mo ago also EUVD-2026-16124
- cvss
- 5.3
- 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, plus a Nuclei check
Summary
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
Patch / fix
- Unknown LeadConnector 3.0.22
CISA SSVC
- Exploitation
- Proof of concept is public
- Automatable
- no
- Technical impact
- partial
- Assessed
- 7 mo ago
Exploit prediction
0.68% chance of exploitation in the next 30 days, higher than 52% of all scored CVEs (FIRST EPSS, 2026-11-08).
Exploits and checks
- Nuclei template LeadConnector < 3.0.22 - Unauthenticated Arbitrary Data Write nuclei detection template
- wpscan.com https://wpscan.com/vulnerability/9b88be70-b5cc-4a3f-a871-64d61cb02076/ referenced PoC, tagged "exploit" by a source, unverified
CVSS scores
| assigned by | version | score | vector |
|---|---|---|---|
| CISA ADP | 3.1 | 5.3 | CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:L/A:N |
| CNA | 3.1 | 5.3 | CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:L/A:N |
Affected products
- Unknown LeadConnector
Classification
- Technology feeds
References
-
wpscan.com
/vulnerability/9b88be70-b5cc-4a3f-a871-64d61cb02076/
exploit, vdb-entry, technical-description
Sources
- CVE List CVE-2026-1890
- NVD CVE-2026-1890
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.