CVE-2026-109376 Frappe CVE debrief

Who should care

Defenders responsible for ERPNext instances, particularly those with publicly accessible project management features, should assess exposure and prioritize remediation. This includes operators, platform administrators, vulnerability management teams, and security teams who need to ensure that appropriate measures are taken to prevent unauthorized access to project Timesheets and potential data exposure.

Why it matters

Defenders should prioritize verifying and remediating this vulnerability in ERPNext instances, particularly those with publicly accessible project management features, to prevent unauthorized access to project Timesheets.

• Authenticated portal users can access project Timesheets without proper authorization
• View timesheet names, status, time-log dates, and last modifiers
• Potential data exposure through unauthorized access to project management data

Technical summary

The get_timesheet_html method in ERPNext 15.55.0 through 16.50.0 does not properly check project membership or hide_timesheets permissions, allowing authenticated portal users to view project Timesheets. This oversight enables unauthorized access to timesheet names, status, time-log dates, and last modifiers. The vulnerability is confirmed in ERPNext versions 15.55.0 through 16.50.0, with patches available in later versions. Defenders should prioritize verifying and remediating this vulnerability in ERPNext instances, particularly those with publicly accessible project management features.

Defensive priority

Defenders should prioritize verifying and remediating this vulnerability in ERPNext instances, particularly those with publicly accessible project management features.

Recommended defensive actions

• Verify ERPNext version and apply patches or updates to remediate the vulnerability
• Restrict access to project management features to authorized users only
• Monitor project management activity for suspicious access or modifications
• 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 vulnerability is confirmed in ERPNext versions 15.55.0 through 16.50.0, with a patch available in later versions. Authenticated portal users can exploit this vulnerability to view project Timesheets, including timesheet names, status, time-log dates, and last modifiers.

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.