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PatchSiren cyber security CVE debrief

CVE-2026-27395 Schiocco CVE debrief

CVE-2026-27395 is a critical vulnerability in the Support Board plugin, affecting versions prior to 3.8.9. This vulnerability allows for unauthenticated privilege escalation, posing a significant risk to affected systems. The CVSS score of 9.8 indicates the severity of this vulnerability. Organizations using the Support Board plugin should take immediate action to mitigate this risk. The vulnerability was published on June 17, 2026, and has since been modified on the same day. Users of the plugin are urged to update to version 3.8.9 or later to prevent exploitation.

Vendor
Schiocco
Product
Support Board
CVSS
CRITICAL 9.8
CISA KEV
Not listed in stored evidence
Original CVE published
2026-06-17
Original CVE updated
2026-06-17
Advisory published
2026-06-17
Advisory updated
2026-06-17

Who should care

Administrators and users of the Support Board plugin, especially those using versions prior to 3.8.9, should be aware of this vulnerability and take necessary actions to secure their systems.

Technical summary

The CVE-2026-27395 vulnerability is caused by an unauthenticated privilege escalation issue in the Support Board plugin. This issue has been assigned a CVSS score of 9.8, indicating a critical severity level. The vulnerability's CVSS vector is CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H, indicating that it can be exploited remotely with low attack complexity and without any privileges or user interaction. The weakness associated with this vulnerability is CWE-266.

Defensive priority

high

Recommended defensive actions

  • Update the Support Board plugin to version 3.8.9 or later.
  • Restrict access to the Support Board plugin to only trusted users.
  • Monitor system logs for any suspicious activity related to the Support Board plugin.
  • Implement additional security measures, such as two-factor authentication, to prevent exploitation.
  • Consider using a web application firewall to detect and prevent attacks.
  • Regularly review and update plugins and software to ensure the latest security patches are applied.

Evidence notes

The information provided is based on data from official sources, including the CVE.org and NVD. The CVE record and NVD detail pages provide further information on this vulnerability.

Sources and references

Verified primary and authoritative sources

  • CVE-2026-27395 CVE Program record

    Publisher, destination, and source semantics verified

    URL: https://www.cve.org/CVERecord?id=CVE-2026-27395

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

  • CVE-2026-27395 NVD vulnerability detail

    Publisher, destination, and source semantics verified

    URL: https://nvd.nist.gov/vuln/detail/CVE-2026-27395

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

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.