CVE-2026-104875: Ente: Accepted emergency contact can bypass the recovery notice period
Advisory generated from the CVE record, CISA, Exploit Observer and VEDAS: what it is, whether it is exploited, who is affected, and how to fix and detect it.
Generated by VEDAS. Scores as of 2026-11-11 15:49 UTC. Rebuilt every few hours from cve-scores, CISA KEV and vedas-signatures. How this works and its limits.
What it is
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.
Description quoted from the CVE record (assigned by GitHub_M, published 2026-10-13).
Weakness: CWE-639: Authorization Bypass Through User-Controlled Key
How it can be exploited
Exploitable over the network with high attack complexity needing low privileges and a user must take an action. Impact: confidentiality high, integrity high, availability high. CVSS:3.1/AV:N/AC:H/PR:L/UI:R/S:U/C:H/I:H/A:H
CISA assessment (SSVC): CISA assesses that a public proof of concept exists. Automatable: no. Technical impact: total.
Public exploit evidence (Exploit Observer)
Exploit Observer found 3 code repositories naming this CVE.
Code repositories that name a CVE are often scanners, copies or fakes, and some are malware. Read the code before running anything.
See all 5 references on Exploit Observer
Live scores
- EPSS
- 0.004
low predicted chance of attack - VEDAS
- 0.988
strong exploit evidence - On CISA KEV
- Not listed
- Detection rule
- Suricata
Who is affected
| Product | Affected | Not affected |
|---|---|---|
| ente | version < 0.1.18 | Not stated |
| ente ghcr.io/ente/server | version < 2026.07.09 | Not stated |
Version ranges exactly as the CVE record states them. “Before X” means X is the first fixed version.
How to fix it
No fixed version or vendor advisory is listed in the CVE record yet. Watch the vendor’s security page.
How to detect it
Suricata rules (network detection)
1 rule that alert on traffic matching this exploit: VEDAS CVE-2026-104875 Ente - Emergency Contact Recovery Authorization Bypass. Add them to your Suricata rule set and reload.
Show the rules
alert http $EXTERNAL_NET any -> $HTTP_SERVERS $HTTP_PORTS (msg:"VEDAS CVE-2026-104875 Ente - Emergency Contact Recovery Authorization Bypass"; flow:established,to_server; http.method; content:"POST"; http.uri; content:"/emergency-contacts/approve-recovery"; nocase; fast_pattern; classtype:web-application-attack; reference:cve,CVE-2026-104875; reference:url,https://www.exploit.observer/?keyword=CVE-2026-104875&match=exact; reference:url,https://subdomain.center/?engine=ammonites&keyword=ente&match=exact; sid:1085403; rev:1;)
CVE-2026-104875.rules on GitHub
References
Other references
- https://github.com/ente/ente/security/advisories/GHSA-2hxj-953x-c2vw (x_refsource_CONFIRM)
- https://github.com/ente/ente/pull/11311 (x_refsource_MISC)
- https://github.com/ente/ente/pull/11342 (x_refsource_MISC)
- https://github.com/ente/ente/commit/1fc4956f90277076559c16dedbfad10cb4d1227b (x_refsource_MISC)
- https://github.com/ente/ente/commit/b3fa9f566466ac3660e276a67621130d684957e7 (x_refsource_MISC)
Other databases
Where this comes from
This advisory is generated automatically by VEDAS from: CVE.org record, cve-scores (EPSS and VEDAS), Exploit Observer, vedas-signatures. Text in quotes is reproduced from the source; everything else is a fixed template filled with source fields. Nothing here is written by a language model. Check the vendor advisory before acting, and read how VEDAS and Exploit Observer work, and their limits.
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