CVE-2026-100686 budibase CVE debrief

Who should care

Budibase server administrators and users, as well as security teams responsible for monitoring and protecting against potential exploitation attempts, should be aware of this vulnerability and take necessary actions to mitigate its impact. This includes reviewing and updating Budibase server versions, implementing additional monitoring and logging, and restricting access to the affected endpoint. Security teams should also verify current Budibase server版本,

Why it matters

CVE-2026-100686 is a high-severity vulnerability in Budibase server versions before 3.45.0, allowing for cross-workspace privilege escalation. Budibase server administrators and users should review and update their versions to 3.45.0 or later, implement additional monitoring and logging, and restrict access to the affected endpoint.

• Potential unauthorized access to sensitive data and systems
• Privilege escalation leading to increased control over Budibase workspaces
• Need for verification of current Budibase server versions and potential updates
• Potential disruption to Budibase services if exploited

Technical summary

The vulnerability exists in the POST /api/global/groups/:groupId/apps endpoint of Budibase server versions before 3.45.0. It allows builders to assign application roles across workspace boundaries, potentially leading to unauthorized access and privilege escalation. The issue arises from a lack of per-app authorization checks, enabling attackers to modify user group role mappings and gain admin roles in other workspaces. This vulnerability has significant implications for Budibase server administrators and users, emphasizing the need for prompt version updates and enhanced security measures.

Defensive priority

High

Recommended defensive actions

• Review and update Budibase server versions to 3.45.0 or later
• Implement additional monitoring and logging to detect potential exploitation attempts
• Restrict access to the POST /api/global/groups/:groupId/apps endpoint
• Verify current Budibase server versions and apply updates as necessary
• Monitor for suspicious activity related to the affected endpoint
• Review and update security controls to prevent exploitation
• Track exceptions and retest remediated assets to ensure vulnerability closure

Evidence notes

The CVE record and source item provide details on the vulnerability, including its description, CVSS score, and affected versions. However, there is limited information on potential exploits or attacks.

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.