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PatchSiren cyber security CVE debrief

CVE-2026-88416 MCMS CVE debrief

A critical SQL injection vulnerability exists in MCMS versions 6.1.1 through 6.2.1, specifically in the custom model/form import feature. This issue has been publicly disclosed and is tracked under CVE-2026-88416. The vulnerability allows attackers to inject malicious SQL code, potentially leading to unauthorized data access and modification. Defenders responsible for MCMS deployments should assess exposure and apply necessary mitigations to prevent potential security breaches. Immediate attention is required to assess exposure and apply mitigations for MCMS installations within the affected version range.

Vendor
MCMS
Product
MCMS
CVSS
CRITICAL 9.8
CISA KEV
Not listed in stored evidence
Original CVE published
2026-09-22
Original CVE updated
2026-10-06
Advisory published
2026-09-22
Advisory updated
2026-10-06

Who should care

Defenders responsible for MCMS deployments, particularly those using versions 6.1.1 through 6.2.1, should assess exposure and apply necessary mitigations.

Why it matters

CVE-2026-88416 is a critical SQL injection vulnerability in MCMS versions 6.1.1 through 6.2.1. Defenders responsible for MCMS deployments should assess exposure and apply necessary mitigations to prevent potential unauthorized data access and modification.

  • Potential for unauthorized data access and modification through SQL injection.
  • Risk of lateral movement within MCMS environments if exploited.
  • Need for immediate patching or mitigation to prevent exploitation.
  • Potential impact on data integrity and confidentiality.

Technical summary

CVE-2026-88416 is a critical SQL injection vulnerability in the custom model/form import feature of MCMS versions 6.1.1 through 6.2.1. The vulnerability has a CVSS score of 9.8 and is considered critical. It allows attackers to inject malicious SQL code, potentially leading to unauthorized data access and modification. The vulnerability is publicly disclosed, and defenders should assess exposure and apply necessary mitigations to prevent potential security breaches.

Defensive priority

Immediate attention is required to assess exposure and apply mitigations for MCMS installations within the affected version range.

Recommended defensive actions

  • Assess MCMS installations for version 6.1.1 through 6.2.1 and verify exposure to the custom model/form import feature.
  • Apply vendor-provided patches or mitigations for affected MCMS versions.
  • Monitor MCMS systems for suspicious activity related to the custom model/form import feature.
  • Review and update inventory records for MCMS deployments to ensure accurate tracking of affected systems.

Evidence notes

The CVE record and NVD entry provide details on the SQL injection vulnerability in MCMS. However, specific details about exploitation or affected deployments are not provided.

Sources and references

Verified primary and authoritative sources

  • CVE-2026-88416 CVE Program record

    Publisher, destination, and source semantics verified

    URL: https://www.cve.org/CVERecord?id=CVE-2026-88416

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

  • CVE-2026-88416 NVD vulnerability detail

    Publisher, destination, and source semantics verified

    URL: https://nvd.nist.gov/vuln/detail/CVE-2026-88416

    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.