# CVE-2026-107755: Apache CouchDB insufficient credential filtering in _replicator

Source: https://junglewise.ai/threats/cve-2026-107755-insufficient-filtering-of-credentials-in-the-replicator-database  
Publisher: Junglewise Threat Intelligence, https://junglewise.ai/threats  
Published: 2026-10-20. Updated: 2026-10-20  
License: CC BY 4.0 with a link back

CVE-2026-107755 · Severity: info · Published 2026-10-20

Apache CouchDB is a document database used to store and replicate data across systems. The vulnerability allows authenticated users to view replication credentials belonging to other users, potentially exposing database credentials and authentication tokens. An attacker with database access could intercept credentials intended to be private.

Technologies: [Apache CouchDB](https://junglewise.ai/threats/technologies/couchdb). Vendors: [Apache](https://junglewise.ai/threats/vendors/apache).

## Quick answers

**Is CVE-2026-107755 exploited in the wild?** No. Junglewise Threat Intelligence has no report of CVE-2026-107755 being exploited in the wild.

**How severe is CVE-2026-107755?** 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-2026-107755?** Yes: fixed in CouchDB 3.5.3. Junglewise finds every place you run it, drafts the upgrade and applies it once you approve.

**How is CVE-2026-107755 attacked?** It is attacked over the network, in a software library.

**Am I affected by CVE-2026-107755?** 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 CouchDB 3.5.3

## Technical details

The _replicator database in CouchDB 3.5.2 and below insufficiently filters credentials, allowing authenticated users to read replication credentials beyond their own replications. This is an information disclosure vulnerability requiring prior authentication to the CouchDB instance. An attacker with valid database credentials can enumerate and extract credentials used for other replications.

## Affected products

- Apache CouchDB 3.5.2 and below

## Timeline

- 2026-10-20: disclosed

## References

- [https://lists.apache.org/thread.html/pj83174r8f8f64odf47fwhozbfjtot0f](https://lists.apache.org/thread.html/pj83174r8f8f64odf47fwhozbfjtot0f)
- [https://lists.apache.org/thread/ro57p4r2lhxn2n4712ppx7r11oqq900n](https://lists.apache.org/thread/ro57p4r2lhxn2n4712ppx7r11oqq900n)

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