CVE-2026-86471

Critical

Description

An unvalidated runtime configuration value in Apache CouchDB 3.5.2 and below on all platforms allows a CouchDB server admin to run arbitrary shell commands as the CouchDB operating system user. Users are recommended to upgrade to version 3.5.3, which fixes this issue.

SeverityCritical

CVSS9.3

Exploit probability—

ProductApache CouchDB

PublishedOct 20, 2026

First seenOct 20, 2026

Weakness typeCWE-78OS command injection

How to fix

Update

Apache Software Foundation Apache CouchDB3.5.3 or later

Vendor advisories

lists.apache.org/thread.html/pj83174r8f8f64odf47fwhozbfjtot0f
lists.apache.org/thread/c8p73gswgogtnzvk7hpw8jb8d4mnosdp

Affected products

Product	Affected versions	Fixed in
Apache Software Foundation Apache CouchDB	v < 3.5.3	3.5.3

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