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PatchSiren cyber security CVE debrief

CVE-2026-110900 Liquid Web / StellarWP CVE debrief

The CVE-2026-110900 vulnerability affects WordPress BookIt plugin versions up to 2.6.0.5, allowing Exploiting Incorrectly Configured Access Control Security Levels due to a Missing Authorization vulnerability. This issue has a CVSS score of 5.3 and is classified as MEDIUM severity. Defenders should verify the plugin version, review access control configurations, and ensure updates to prevent potential unauthorized access. The CVE record and source item provide details, but additional verification is recommended to confirm affected deployments and assess exposure.

Vendor
Liquid Web / StellarWP
Product
BookIt
CVSS
MEDIUM 5.3
CISA KEV
Not listed in stored evidence
Original CVE published
2026-10-16
Original CVE updated
2026-10-16
Advisory published
2026-10-16
Advisory updated
2026-10-16

Who should care

Defenders responsible for WordPress installations with the BookIt plugin should assess exposure and verify the version in use. They should also review access control configurations for the plugin.

Why it matters

The CVE-2026-110900 vulnerability in the WordPress BookIt plugin requires verification of the plugin version and review of access control configurations to prevent potential unauthorized access.

  • Verification of plugin version and access control configurations is necessary
  • Potential for unauthorized access due to incorrectly configured security levels

Technical summary

The WordPress BookIt plugin, versions up to 2.6.0.5, is affected by a Missing Authorization vulnerability. This issue allows for Exploiting Incorrectly Configured Access Control Security Levels. The vulnerability has a CVSS score of 5.3 and is classified as MEDIUM severity.

Defensive priority

Defenders should prioritize verifying the version of the BookIt plugin in use and ensuring it is updated to a version beyond 2.6.0.5 if possible. They should also review access control configurations for the plugin.

Recommended defensive actions

  • Verify the version of the BookIt plugin in use
  • Ensure the plugin is updated to a version beyond 2.6.0.5 if possible
  • Review access control configurations for the plugin

Evidence notes

The CVE record and source item provide details about the vulnerability in the WordPress BookIt plugin. The information indicates a Missing Authorization vulnerability in versions up to 2.6.0.5.

Sources and references

Verified primary and authoritative sources

  • CVE-2026-110900 CVE Program record

    Publisher, destination, and source semantics verified

    URL: https://www.cve.org/CVERecord?id=CVE-2026-110900

    CVE Program - Official CVE Program record with source-provided CVE metadata.

  • CVE-2026-110900 NVD vulnerability detail

    Publisher, destination, and source semantics verified

    URL: https://nvd.nist.gov/vuln/detail/CVE-2026-110900

    NIST National Vulnerability Database - Official NIST NVD detail page and source-specific vulnerability assessment.

Supplemental references

Methodology and review provenance

AI-assisted synthesis based on stored public vulnerability evidence. System validation, approval state, and publication status do not by themselves establish human review of this revision. PatchSiren helps prioritize defensive review and does not prove exposure or remediation on any system.