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.

References

https://lists.apache.org/thread/c8p73gswgogtnzvk7hpw8jb8d4mnosdp

https://lists.apache.org/thread.html/pj83174r8f8f64odf47fwhozbfjtot0f

https://euvd.enisa.europa.eu/vulnerability/EUVD-2026-105155

http://www.openwall.com/lists/oss-security/2026/10/20/11

Details

Source: Mitre, NVD

Published: 2026-10-20

Updated: 2026-10-21

Risk Information

CVSS v2

Base Score: 9

Vector: CVSS2#AV:N/AC:L/Au:S/C:C/I:C/A:C

Severity: High

CVSS v3

Base Score: 9.8

Vector: CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H

Severity: Critical

CVSS v4

Base Score: 9.3

Vector: CVSS:4.0/AV:N/AC:L/AT:N/PR:H/UI:N/VC:H/VI:H/VA:L/SC:H/SI:H/SA:L

Severity: Critical

EPSS

EPSS: 0.00606