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TI-2026-15390 Aliases CVE-2026-18786GHSA-8r6g-r9rq-8jr8

CheckView < 2.3.2 - Administrator Account Creation via REST API Authentication Bypass

Priority MEDIUM 41CWE-287Published · Updated

Key facts

Attack vector
Network
Privileges required
None
User interaction
Required
Attack complexity
Low
Impact type
Security bypass
Confidentiality · integrity · availability
High · High · High
Fix status
Fixed

Attack profile from CVSS 3.1 · CISA ADP. Fix status from CNA. Impact type from CWE-287.

Summary

The CheckView WordPress plugin before 2.3.2 does not restrict its REST API authentication filter to its own routes and unconditionally discards the authentication error raised for any request whose URI merely contains a CheckView WordPress plugin before 2.3.2-specific string, making it possible for unauthenticated attackers to bypass the REST nonce check and perform any REST action available to a logged-in administrator, such as creating a new administrator account, via a crafted link an administrator is tricked into opening.

Why it matters now

Exploitation None reported CISA SSVC · not in CISA KEV
EPSS 0.00543 45th percentileScored 2026-11-07
Public exploit Yes 1 exploit referenceTagged by the CNA
Fix Fixed CheckView (Unknown): 2.3.2

SSVC decision points

CISA ADP · SSVC 2.0.3

Exploitation
None
Automatable
No
Technical impact
Total

The decision (Track, Attend, Act) also depends on your mission and well-being impact; see CISA's SSVC guide.

Affected products

VendorProductAffected versionsFixed inStatusSource
UnknownCheckView2.0.29 to before 2.3.22.3.2Patch availableCNA
  • CheckView VendorUnknown Affected 2.0.29 to before 2.3.2 Fixed in 2.3.2 Patch available CNA

Remediation

  • Fix · CNA CheckView (Unknown) Fixed in 2.3.2

Timeline

  1. 2026-10-02 Threatist record created from CVE-2026-18786
  2. 2026-10-03 Alias added: GHSA-8r6g-r9rq-8jr8

References

Exploit 1

Sources

This product uses the NVD API but is not endorsed or certified by the NVD. Sources and licences