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PatchSiren cyber security CVE debrief

CVE-2026-111834 Kitae Park CVE debrief

The CVE-2026-111834 vulnerability in the WordPress Mang Board WP plugin allows for arbitrary file uploads, posing a critical risk to affected systems. This issue, with a CVSS score of 9.9, affects versions up to 2.4.4 and has been publicly disclosed on October 21, 2026. The vulnerability enables attackers to upload malicious files, potentially leading to web shell uploads and arbitrary code execution. Immediate assessment and remediation are required to prevent potential exploitation. Administrators and security teams should verify plugin versions, restrict upload capabilities, and monitor for suspicious file uploads. The CVE Program and NVD have documented this vulnerability, but

Vendor
Kitae Park
Product
Mang Board WP
CVSS
CRITICAL 9.9
CISA KEV
Not listed in stored evidence
Original CVE published
2026-10-21
Original CVE updated
2026-10-21
Advisory published
2026-10-21
Advisory updated
2026-10-21

Who should care

Administrators and security teams responsible for WordPress installations using the Mang Board WP plugin should assess their exposure and take immediate action to mitigate the risk.

Why it matters

CVE-2026-111834 is a critical vulnerability in the WordPress Mang Board WP plugin that allows for arbitrary file uploads. This poses a significant risk to WordPress installations using affected versions of the plugin. Immediate assessment and remediation are required to prevent potential exploitation.

  • Potential for web shell uploads and arbitrary code execution
  • Risk of elevated privileges for attackers
  • Possible lateral movement within compromised networks
  • Need for immediate plugin version verification and updates

Technical summary

The Mang Board WP plugin for WordPress has a vulnerability that allows for unrestricted file uploads with dangerous types. This can lead to the upload of web shells to a web server. The issue affects the plugin from its inception up to version 2.4.4.

Defensive priority

Immediate assessment and remediation are required for systems using the Mang Board WP plugin version 2.4.4 or earlier. Defenders should verify plugin versions, restrict upload capabilities, and monitor for suspicious file uploads.

Recommended defensive actions

  • Verify and update Mang Board WP plugin to version 2.4.5 or later
  • Restrict file upload capabilities for users with low privileges
  • Monitor plugin usage and file upload activities for suspicious behavior
  • Implement additional security measures such as Web Application Firewalls (WAFs)

Evidence notes

The CVE Program and NVD have documented this vulnerability, providing details on its critical severity and potential impact. However, specific details on exploitation are limited.

Sources and references

Verified primary and authoritative sources

  • CVE-2026-111834 CVE Program record

    Publisher, destination, and source semantics verified

    URL: https://www.cve.org/CVERecord?id=CVE-2026-111834

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

  • CVE-2026-111834 NVD vulnerability detail

    Publisher, destination, and source semantics verified

    URL: https://nvd.nist.gov/vuln/detail/CVE-2026-111834

    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.