CVE-2026-42865 Inbox Zero: Cross-account cleaner email stream exposure

Low 2.3 Published Updated

An attacker can view email thread events from another user's account due to shared Redis subscription listeners in the cleaner feature.

Exploited in the wild
Not known
Login needed
Any signed-in user
Attackable
Over the internet
Victim action needed
Not needed
Fix
None listed

What is CVE-2026-42865?

CVE-2026-42865 is a low-severity vulnerability in elie222 inbox-zero, published on 11 May 2026. Any signed-in user can exploit it over the network, with no action from the victim.

Official description

Inbox Zero is an AI personal assistant for email. Prior to 2.29.3, the cleaner email stream endpoint used a shared Redis subscription listener, which could deliver thread events for one authenticated account to another authenticated account using the cleaner feature at the same time. This vulnerability is fixed in 2.29.3.

Weakness: CWE-200

Which versions are affected by CVE-2026-42865?

It affects 1 product.

Products include Getinboxzero Inbox Zero.

How do I fix CVE-2026-42865?

No fix has been published for CVE-2026-42865 yet. Limit exposure of the affected software until one is available.

Is CVE-2026-42865 being exploited?

There is no known exploitation of CVE-2026-42865 in the wild and no public exploit code.

Sources

Also known as GHSA-f3gp-v7cj-2569.

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