Severity by source
CVSS:4.0/AV:N/AC:L/AT:N/PR:N/UI:N/VC:H/VI:H/VA:H/SC:N/SI:N/SA:N/E:X/CR:X/IR:X/AR:X/MAV:X/MAC:X/MAT:X/MPR:X/MUI:X/MVC:X/MVI:X/MVA:X/MSC:X/MSI:X/MSA:X/S:X/AU:X/R:X/V:X/RE:X/U:X
Remote, no-auth login bypass needing only an email (AV:N/AC:L/PR:N/UI:N); full read of and changes to account data (C:H/I:H) but no service-availability impact (A:N).
Primary rating from Vendor (icscert).
CVSS VectorVendor: icscert
Lifecycle Timeline
2DescriptionCVE.org
The login endpoint on the Mira cloud API accepts any format-valid string in the password field and returns a live active session token for the account matching the supplied email address. An attacker could use an email address to control cloud accounts and access hormone record information and account settings.
AnalysisAI
Authentication bypass in the Mira fertility-tracking cloud API allows any remote attacker to take over user accounts by supplying only a victim's email address and an arbitrary password, since the login endpoint validates the email but accepts any format-valid string as the password and returns a live active session token. Affecting Mira Firmware 1.7.1.47 and Mira Android App 4.5.15.4 (Quanovate Tech Inc, operating as Mira / Mira Care), this reported by CISA (ICSMA-26-223-01) carries a CVSS 4.0 base score of 9.3 and exposes sensitive reproductive-health (hormone) records and account settings. There is no public exploit identified at time of analysis and it is not listed in CISA KEV.
Technical ContextAI
The flaw resides in the server-side login handler of the Mira cloud API, the backend that pairs with the Mira ovulation/hormone tracker hardware and its Android companion app. The root cause is classified as CWE-1390 (Weak Authentication): the endpoint performs no meaningful credential verification of the password, treating account lookup by email as sufficient to mint a session token. Effectively the password check is a no-op, so the authentication decision collapses to 'does an account exist for this email,' which is trivially satisfiable. The affected CPEs identify two components in the ecosystem - mira_firmware and mira_android_app - but the actual defect is in the shared cloud authentication service both rely on, meaning the exposure is server-side rather than something patched purely on-device.
RemediationAI
Because the root cause is server-side, the primary remediation is applied by the vendor to the Mira cloud API rather than by end users; organizations and users should monitor CISA ICSMA-26-223-01 (https://www.cisa.gov/news-events/ics-medical-advisories/icsma-26-223-01) and the corresponding CSAF (https://github.com/cisagov/CSAF/blob/develop/csaf_files/OT/white/2026/icsma-26-223-01.json) for the vendor's remediation status and update Mira Firmware beyond 1.7.1.47 and the Mira Android App beyond 4.5.15.4 once fixed builds are published - no vendor-released fixed version was identified in the available data, so this should be treated as No vendor-released patch version independently confirmed at time of analysis. As compensating controls, affected users should assume account compromise and, once the vendor confirms a fix, rotate credentials and invalidate existing sessions; where the platform offers it, enable multi-factor authentication so that a password bypass alone does not grant a session (trade-off: unavailable if the API does not enforce a second factor). Users with heightened privacy concerns can minimize stored data or discontinue account use until the vendor confirms the cloud fix, accepting loss of tracking functionality as the side effect.
More in Mira Firmware
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Firmware version spoofing in the Mira cloud API allows authenticated users to submit arbitrary firmware version strings
Same weakness CWE-1390 – Weak Authentication
View allSame technique Information Disclosure
View allShare
External POC / Exploit Code
Leaving vuln.today
EUVD-2026-56982
GHSA-g9jf-c3gx-prx3