CVE-2026-104875

HighCVSS 7.1

Published: 13/10/2026(UTC)Updated: 16/10/2026(UTC)Translated: 14/10/2026(UTC)NVD NIST

Exploitation Probability (EPSS)

Low risk

0.35%

27th percentile - higher than 27% of all known CVEs

Summary

In Ente prior to server image 2026.07.09, the POST /emergency-contacts/approve-recovery endpoint authorized approval using a client-supplied userID and updated an emergency recovery session using only its client-supplied recovery-session UUID. An accepted emergency contact could submit the contact's own identifier, transition the victim's session from WAITING to READY, clear wait_till, retrieve recovery information, and continue account recovery before the owner-configured notice period expired. Exploitation of the approval bypass required the victim to have previously added and accepted the attacker as an emergency contact, and it did not create recovery rights for an arbitrary account. Separately, the same insufficiently scoped update pattern affected the reject and stop recovery transitions, allowing a user who knew another recovery-session UUID to potentially cancel a session to which the user was not a party. This issue is fixed in server image 2026.07.09.

Risk Assessment

A person added as an emergency contact could bypass the waiting period and take over the victim's account before the notice period expires, potentially leading to unauthorized access to data. Additionally, a user knowing a recovery-session UUID could cancel a session they are not a party to.

Recommendation

Update the Ente server to image 2026.07.09 or later.

Other vulnerabilities in Ente

CVE-2026-73230Medium
Ente prior to 2026.07.28 stored the secret byte length and 32-bit FNV-1a checksum in cleartext on every card in the 2of3 card format version 1, allowing someone with one card to test candidate secrets offline and recover low-entropy or predictable secrets.

Original NVD description (English source)

Ente provides end-to-end encrypted cloud services and security tools. Prior to server image 2026.07.09, the POST /emergency-contacts/approve-recovery endpoint authorized approval using a client-supplied userID and updated an emergency recovery session using only its client-supplied recovery-session UUID. An accepted emergency contact could submit the contact's own identifier, transition the victim's session from WAITING to READY, clear wait_till, retrieve recovery information, and continue account recovery before the owner-configured notice period expired. Exploitation of the approval bypass required the victim to have previously added and accepted the attacker as an emergency contact, and it did not create recovery rights for an arbitrary account. Separately, the same insufficiently scoped update pattern affected the reject and stop recovery transitions, allowing a user who knew another recovery-session UUID to potentially cancel a session to which the user was not a party. This issue is fixed in server image 2026.07.09.

Vulnerability data from NVD (NIST) · CISA KEV · EPSS