CVE-2026-86471

critical · 9.3

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.

9.3

CVSS

0.6%

EPSS (exploit prob.)

49th

EPSS percentile

2026-10-20

Published

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/CR:X/IR:X/AR:X/MAV:X/MAC:X/MAT:X/MPR:X/MUI:X/MVC:X/MVI:X/MVA:X/MSC:X/MSI:X/MSA:X/S:N/AU:Y/R:U/V:C/RE:M/U:Red

Weaknesses

CWE-78

References

https://lists.apache.org/thread.html/pj83174r8f8f64odf47fwhozbfjtot0f
https://lists.apache.org/thread/c8p73gswgogtnzvk7hpw8jb8d4mnosdp
http://www.openwall.com/lists/oss-security/2026/10/20/11

Query this programmatically:

curl https://evil-db.io/api/v1/cve/CVE-2026-86471