CVE-2026-39721 Brainstorm Force CVE debrief

Who should care

Defenders responsible for maintaining and securing Brainstorm Force Starter Templates astra-sites installations should assess exposure and prioritize verification and remediation efforts.

Why it matters

Defenders should prioritize verifying and updating affected Brainstorm Force Starter Templates astra-sites installations to prevent potential security incidents related to this Missing Authorization vulnerability.

• Defenders need to verify and update affected systems to prevent potential security incidents.
• Exploitation of this vulnerability could lead to unauthorized access and modifications.
• Further verification is required to determine the full scope of affected systems and potential consequences.

Technical summary

The Brainstorm Force Starter Templates astra-sites plugin has a Missing Authorization vulnerability, which allows for Exploiting Incorrectly Configured Access Control Security Levels. This issue affects versions from n/a through 4.7.7. The vulnerability arises from inadequate authorization mechanisms, potentially leading to unauthorized access and modifications. Defenders should prioritize verifying and updating affected systems, especially those with exposed or internet-facing deployments, to prevent exploitation. The technical details of the vulnerability are as

Defensive priority

Defenders should prioritize verifying and updating affected systems, especially those with exposed or internet-facing deployments.

Recommended defensive actions

• Verify and update affected Brainstorm Force Starter Templates astra-sites installations to version 4.7.7 or later.
• Review and adjust access control configurations for astra-sites to prevent exploitation.
• Monitor for potential security incidents related to this vulnerability.

Evidence notes

The CVE record and NVD entry provide limited information about the vulnerability. Further verification is required to determine the full scope of affected systems and potential consequences.

Sources and 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.