Vulnerability · Published Oct 20, 2026 · Assigned by apache
CVE-2026-86471Apache CouchDB: Admin credentials leading to code execution as operating system user
Critical 9.3
In plain English
A critical-severity OS command injection in Apache CouchDB from Apache Software Foundation. There are no confirmed reports of exploitation so far. The chance it is exploited in the next 30 days is estimated at 0.6% (higher than 49% of all known vulnerabilities).
Severity (CVSS 4.0)9.3Critical
Exploit odds (30 days)0.6%top 50.8% of all CVEs
Exploited in the wildNo reportsCISA SSVC: none
Attack toolingNoneno public tooling known
Official 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.
Affected products (as reported)
| Vendor | Product | Versions |
|---|---|---|
| Apache Software Foundation | Apache CouchDB | 0 – before 3.5.3 |
Weakness: CWE-78 · 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/E:A/S:N/AU:Y/R:U/V:C/RE:M/U:Red