All vulnerabilities
CVE-2026-86471

Apache CouchDB: Admin credentials leading to code execution as operating system user

Apache Software Foundation Apache CouchDBDatabases
CVSS
9.3Critical
ExploitationNo known exploitationNot in CISA KEV, which does not prove it is unexploitedCISA KEV
Exploit odds (EPSS)0.61%Chance of exploitation activity in the next 30 days, higher than 48% of CVEs. Scored 23 Oct 2026FIRST EPSS
Fixed in3.5.3Fixed versionCVE List
Published20 Oct 2026Updated 21 Oct 2026CVE List

What fixes it

A fixed version on one release line is not the upgrade target for every line. Check your exact version and any vendor backports.

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.

Text from CVE List

Affected versions 1

  • Apache CouchDBaffected: all versions before 3.5.3CVE List

References 2