CVE-2026-86471CWE-78command-injection

CVE-2026-86471

published October 20, 2026

CVSS
9.3
EPSS
1%
Percentile
48.3
In the wild
Unconfirmed
What it is

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.

The record
Technical detail
CVSS
9.3 · NONE
CVSS v4.0
9.3 · 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/E:A/S:N/AU:Y/R:U/V:C/RE:M/U:Red
EPSS
0.00606 · 48.3th percentile
Weakness
CWE-78 · Improper Neutralization of Special Elements used in an OS Command ('OS Command Injection')
Published
2026-10-20T20:17Z
References (3)
https://lists.apache.org/thread.html/pj83174r8f8f64odf47fwhozbfjtot0f · [email protected]https://lists.apache.org/thread/c8p73gswgogtnzvk7hpw8jb8d4mnosdp · [email protected]http://www.openwall.com/lists/oss-security/2026/10/20/11 · af854a3a-2127-422b-91ae-364da2661108
EPSS history
Timeline
  • 22 OCT 03:35Z
    EPSS moved — → 1%
    epss
  • 20 OCT 15:38Z
    Apache CouchDB: Admin credentials leading to code execution as operating system user
    cvelistv5
  • 20 OCT 15:38Z
    Apache CouchDB: Admin credentials leading to code execution as operating system user
    cvelistv5