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PatchSiren cyber security CVE debrief

CVE-2026-110896 WP Chill CVE debrief

The CVE-2026-110896 vulnerability affects the WordPress Passster plugin, specifically versions up to 4.3.18. This issue is related to a Missing Authorization vulnerability, which allows for Exploiting Incorrectly Configured Access Control Security Levels. The vulnerability has a CVSS score of 5.3 and a severity of MEDIUM. Defenders responsible for WordPress installations using the Passster plugin should assess their exposure and verify the version of the plugin in use. The CVE record and source item provide details about the vulnerability, including its CVSS score and affected versions. However, there is limited information on exploitation or specific impacts. It requires verifying

Vendor
WP Chill
Product
Passster
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 using the Passster plugin should assess their exposure and verify the version of the plugin in use.

Why it matters

The CVE-2026-110896 vulnerability in the WordPress Passster plugin requires verification of the plugin version and review of access control configurations to prevent potential exploitation.

  • Defenders need to verify the version of the Passster plugin to ensure it is not vulnerable.
  • Access control configurations for the plugin need to be reviewed to prevent exploitation.

Technical summary

The vulnerability is a Missing Authorization issue in the WordPress Passster plugin, affecting versions up to 4.3.18. It allows for Exploiting Incorrectly Configured Access Control Security Levels, with a CVSS score of 5.3 and a severity of MEDIUM. The issue arises from the plugin's failure to properly validate access control, potentially allowing unauthorized actions. Defenders should prioritize verifying the version of the Passster plugin in use and ensuring it is updated to a version beyond 4.3.18 if possible. They should also review access control

Defensive priority

Defenders should prioritize verifying the version of the Passster plugin in use and ensuring it is updated to a version beyond 4.3.18 if possible. They should also review access control configurations for the plugin.

Recommended defensive actions

  • Verify the version of the Passster plugin in use and update to a version beyond 4.3.18 if possible.
  • Review access control configurations for the plugin.
  • Monitor for any unusual activity related to the Passster plugin.

Evidence notes

The CVE record and source item provide details about the vulnerability, including its CVSS score and affected versions. However, there is limited information on exploitation or specific impacts.

Sources and references

Verified primary and authoritative sources

  • CVE-2026-110896 CVE Program record

    Publisher, destination, and source semantics verified

    URL: https://www.cve.org/CVERecord?id=CVE-2026-110896

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

  • CVE-2026-110896 NVD vulnerability detail

    Publisher, destination, and source semantics verified

    URL: https://nvd.nist.gov/vuln/detail/CVE-2026-110896

    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.