CVE-2026-52825 kimai CVE debrief

Who should care

Defenders responsible for Kimai installations, teamlead roles, and team configurations should assess exposure and verify the effectiveness of the fix. They should prioritize reviewing team configurations and ensuring that teamleads are properly restricted to their manageable scope. Additionally, defenders should monitor for potential abuse and ensure that compensating controls are in place for exposed systems.

Why it matters

CVE-2026-52825 allows teamleads to bypass access controls, potentially leading to unauthorized access and security risks. Defenders should prioritize verifying exposure and reviewing team configurations.

• Potential unauthorized access to team-based resources
• Bypass of access controls for teamleads
• Possible security risks due to unauthorized relationships

Technical summary

The vulnerability allows teamleads to add users or activities outside their manageable scope to an editable team, bypassing the narrower choices enforced by TeamEditForm and UserRepository::getQueryBuilderForFormType(). This can lead to unauthorized access and potential security risks. The issue arises from insufficient access control checks in the teamlead's management interface, enabling the creation of unauthorized relationships that can be trusted by RolePermissionManager::checkTeamAccessActivity() and other team-based authorization logic.

Defensive priority

Defenders should prioritize verifying exposure of teamlead roles and reviewing team configurations to prevent unauthorized access.

Recommended defensive actions

• Verify exposure of teamlead roles and review team configurations to prevent unauthorized access
• Update to version 2.58.0 or later
• Monitor team-based authorization and visibility logic for potential abuse
• Review compensating controls for exposed systems while remediation is scheduled and verified
• Check relevant monitoring, detection, and logs for exposed assets that need extra review
• Track exceptions, retest remediated assets, and close the item only after evidence is documented
• Confirm whether affected product deployments exist in managed environments and assign an owner for follow-up

Evidence notes

The CVE record and source references provide details on the vulnerability and its fix. However, additional verification is required to determine the full scope of affected systems and to confirm the effectiveness of the fix.

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.