External risk intelligence

Frappe HRMS Telemetry Bypass Information Exposure

CVE advisorySeverity: CRITICAL (CVSS 9.3)

CVE-2026-126315

Frappe HRMS is typically deployed as an internal business application for human resources management. While it is a web-based platform, it is generally hosted within a corporate internal network or protected by access controls and is not designed or intended to be exposed directly to the public internet.

Halo Surface Signal: 2 out of 5 — less likely to be public-facing.

External exposure likelihood

Horizon Alert

Summary of the vulnerability and why it matters

A security vulnerability in Frappe HRMS allows for the unintended transmission of HR transaction details, such as leave types, claimed amounts, and appraisal scores, even when telemetry is disabled. This bypasses intended privacy settings and may expose sensitive information during normal system use.

  • Sensitive HR data sent without consent.
  • Leadership should recall data privacy controls.
  • Confirm HRMS deployment relevance and exposure.

Attack Path

How an attacker could exploit the issue

An attacker could gain unauthorized access to sensitive employee data if Frappe HRMS is exposed to the internet. The vulnerability lies in the product's failure to respect the telemetry settings, leading to the transmission of usage events that may contain details about leave types, claimed amounts, and appraisal scores. This information exposure can occur during normal HR transactions.

  • No specific entry conditions required.
  • Triggered by normal HR transactions.
  • Exposes sensitive employee information.

Live Threat

Current exploitation, exposure, and threat context

When supported by the advisory, sensitive information related to HR transactions could be disclosed even when telemetry is disabled. This includes details like leave types, claimed amounts, and appraisal scores.

  • HR transaction details could be exposed.
  • Data is sent without checking telemetry settings.
  • Sensitive HR information may be disclosed.

Operational Fix

Recommended remediation, mitigation, and detection steps

Frappe HRMS is an application likely owned by your HR or IT application management teams. The first practical step is to identify all instances of Frappe HRMS, confirm their accessibility and business criticality, and then assign an accountable owner for remediation planning.

  • Identify HRMS instances and criticality.
  • Verify telemetry configuration and data exposure.
  • Plan vendor coordination and update.

Supplementary metadata

Validate whether this threat affects your internet-facing exposure.

Halo Threat Intelligence helps prioritize remediation with Halo Surface Signal and H/A/L/O context. Start exposure validation with a free external attack surface trial.

Frequently asked questions

What is Frappe HRMS?

Frappe HRMS is a comprehensive human resources management software suite. Organizations use it to streamline core HR functions, including tracking employee leave, managing payroll-related claims, and conducting performance appraisals. It serves as a centralized digital system for handling sensitive administrative and personnel-related business processes.

What does CWE-359 mean for CVE-2026-126315?

CWE-359 refers to the Exposure of Private Personal Information. In the context of CVE-2026-126315, it means the software fails to protect sensitive data as promised. Even when users explicitly disable telemetry settings to stop data sharing, the system ignores these preferences and continues to transmit private details like appraisal scores and leave records to external destinations.

How is this telemetry bug triggered?

This vulnerability is triggered automatically during routine HR operations. If the software processes an HR transaction, it sends usage events regardless of whether the system telemetry setting is toggled off. It does not require a specific attacker action or complex exploit; the transmission is an inherent behavior of the affected software versions when performing standard daily tasks.

Is my Frappe HRMS instance at risk?

Risk depends on your network architecture. According to Halo Surface Signal, this software is typically deployed as an internal business application and is not intended for public internet access. If your installation is strictly confined to a corporate internal network or shielded by robust access controls, the likelihood of unauthorized data interception is lower than for a system exposed directly to the public web.

What should I do to secure my system?

First, locate all running instances of Frappe HRMS within your organization to establish an inventory. Verify the current version to see if it falls within the affected range. Once identified, coordinate with your IT or HR application owners to plan an update to a secure version. In the interim, evaluate your network access controls to ensure the application remains restricted to authorized users only.

References