Is CVE-2026-90800 exploited in the wild?

No. Junglewise Threat Intelligence has no report of CVE-2026-90800 being exploited in the wild.

How severe is CVE-2026-90800?

Informational severity, published 20 October 2026.

Which products and versions are affected?

Apache CouchDB 3.5.2 and below.

Is there a fix for CVE-2026-90800?

Yes: fixed in 3.5.3. Junglewise finds every place you run it, drafts the upgrade and applies it once you approve.

How is CVE-2026-90800 attacked?

It is attacked over the network, in a software library.

Am I affected by CVE-2026-90800?

Check whether you run Apache CouchDB at an affected version. Junglewise does that check for you around the clock: connect your code, cloud and domains, and it matches new vulnerabilities like this one against what you actually run and tells you when one reaches you.

CVE-2026-90800: Apache CouchDB missing authorization checks in chttpd

CVE-2026-90800 · Severity: info · Published 2026-10-20

Apache CouchDB is a document database used to store and synchronize data across distributed systems. A missing authorization check in the HTTP server component allows unauthenticated attackers to read the complete contents of system databases (prefixed with underscore), exposing sensitive user credentials and replication settings. This exposure is limited to installations using the rare practice of prefixed system databases.

Technologies: Apache CouchDB. Vendors: Apache.

Quick answers

Is CVE-2026-90800 exploited in the wild?: No. Junglewise Threat Intelligence has no report of CVE-2026-90800 being exploited in the wild.
How severe is CVE-2026-90800?: Informational severity, published 20 October 2026.
Which products and versions are affected?: Apache CouchDB 3.5.2 and below.
Is there a fix for CVE-2026-90800?: Yes: fixed in 3.5.3. Junglewise finds every place you run it, drafts the upgrade and applies it once you approve.
How is CVE-2026-90800 attacked?: It is attacked over the network, in a software library.
Am I affected by CVE-2026-90800?: Check whether you run Apache CouchDB at an affected version. Junglewise does that check for you around the clock: connect your code, cloud and domains, and it matches new vulnerabilities like this one against what you actually run and tells you when one reaches you.

How to fix

Fixed in: 3.5.3

Technical details

The chttpd HTTP server component in Apache CouchDB fails to properly validate authorization on API endpoints that access prefixed _user and _replicator databases. An unauthenticated network request can bypass authorization checks to retrieve full database contents. The vulnerability requires no user interaction and affects CouchDB 3.5.2 and earlier on all platforms; version 3.5.3 contains the fix.

Affected products

Apache CouchDB 3.5.2 and below

Timeline

2026-10-20: disclosed

References

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