External risk intelligence

Mira Cloud API Login Token Leakage Vulnerability

CVE advisorySeverity: CRITICAL (CVSS 9.3)

CVE-2026-68067

The vulnerability exists in a login endpoint of a cloud API. Cloud APIs are designed for internet accessibility to support user authentication and service interactions, making them public-facing by design.

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

External exposure likelihood

Horizon Alert

Summary of the vulnerability and why it matters

A critical vulnerability has been identified in a cloud API's login process, allowing unauthorized access to sensitive hormone record information and account settings by exploiting how passwords are handled. This could enable attackers to take control of cloud accounts through compromised email addresses.

Issue: Login bypass grants unauthorized account access.
Why remember: Potential for sensitive data compromise.
Executive takeaway: Confirm relevance and assess exposure.

Attack Path

How an attacker could exploit the issue

An attacker could target the Mira cloud API's login endpoint without needing any prior access or authentication. By sending a specially crafted request with any validly formatted string as the password for a known email address, they could obtain a live session token. This would allow them to impersonate the account owner and access sensitive hormone record information and account settings.

No authentication or access required.
Login endpoint with a malformed password.
Unauthorized access to sensitive data.

Live Threat

Current exploitation, exposure, and threat context

This vulnerability could allow an attacker to gain unauthorized access to user accounts on the Mira cloud API by providing a valid email address and any format-valid string for the password. When this is supported by the advisory, attackers could access sensitive hormone record information and account settings associated with the targeted email address.

Cloud accounts and sensitive health data at risk.
Unauthorized session token generation.
Compromise of account settings and health records.

Operational Fix

Recommended remediation, mitigation, and detection steps

The application owner and platform team are likely responsible for addressing this critical vulnerability in the Mira cloud API's login endpoint. The first practical step is to identify all instances of the API, determine their exposure and business criticality, and then confirm the accountable owner to plan remediation.

Accountable teams: App owners, platform teams.
Verify first: API instances, exposure, criticality.
Action: Plan remediation with accountable owner.

Supplementary metadata

CVSS vector

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.

Free EASM Trial See How Signal Works

Frequently asked questions

What is the Mira cloud API?

Mira is a health technology platform that uses cloud-based services to help users track and manage hormone levels. The Mira cloud API acts as the central communication bridge, allowing mobile apps and web dashboards to exchange user data, such as hormone records and account configuration settings, with the Mira back-end infrastructure.

How does CVE-2026-68067 function?

This vulnerability is classified as CWE-1390, which involves an improper check of authentication inputs. In this specific case, the login endpoint fails to verify the password against the stored credential. Instead, it accepts any text that matches a valid string format, incorrectly assuming the login attempt is authentic and granting a live session token.

Do I need special access to trigger this bug?

No. The vulnerability does not require the attacker to have prior access to the system, specific network privileges, or knowledge of the victim's password. It is also not triggered by legitimate login attempts; rather, it occurs when an attacker provides a known email address paired with any technically valid password string.

Why is CVE-2026-68067 relevant to me?

According to Halo Surface Signal, this API is internet-facing by design to facilitate user authentication from anywhere. This creates a high likelihood of accessibility for anyone on the public internet, putting sensitive hormone records and account settings at risk of unauthorized access through account impersonation.

How should I respond to this Mira cloud API issue?

Since this is a back-end API vulnerability, the initial focus is inventory and coordination. Identify which of your services or applications rely on the Mira cloud API, determine the business impact if those accounts were compromised, and contact your designated platform or application owner to confirm that remediation planning is underway.

References

www.cisa.gov/news-events/ics-medical-advisories/icsma-26-223-01

Written by Nicholas Merritt

Nicholas Merritt is VP of Security Solutions at Halo Security. With more than 25 years across application security, vulnerability prioritization, and offensive security, he helps teams translate threat data into practical exposure validation and remediation focus. He authors Halo Threat Intelligence CVE advisories using Halo Surface Signal and H/A/L/O context to prioritize internet-facing risk.