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8.9

Apache CouchDB admin can run OS commands

CVE-2026-86471 · published 11 days ago
Summary

If you run Apache CouchDB version 3.5.2 or earlier, a server administrator could enter commands that the database would execute on the host computer, using the CouchDB system account. This could let the admin take actions beyond the database, potentially affecting other applications or data. Upgrade to version 3.5.3 as soon as possible to stop this behavior.

What to do
  • Update couchdb to version 3.5.3.
  • Update apache software foundation apache couchdb to version 3.5.3 or later.
Affected software
Ecosystem VendorProductAffected versions
– apache software foundation apache couchdb < 3.5.3
Ubuntu:16.04:LTS canonical couchdb All versions
Bitnami – couchdb < 3.5.3
Fix: upgrade to 3.5.3
Original advisory text
Apache CouchDB: Admin credentials leading to code execution as operating system user
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.
References
Fix within
Internet-facing 14 days
Internal At next upgrade
  • Not known to be exploited
  • Needs hands-on effort to exploit
  • Gives an attacker full control
Severity
8.9 High
Exploitation
<1% chance of attack within 30 days
Type
CWE-78OS Command Injection
Timeline
Published29 Oct 2026
Updated7 Nov 2026
First seen20 Oct 2026
Sources
CVE-2026-86471 · NVD
CVE-2026-86471 · MITRE
UBUNTU-CVE-2026-86471 · OSV
BIT-couchdb-2026-86471 · OSV
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