CVE-2026-86471

CRITICAL CVSS 4.0: 9.3
Updated Oct 20, 2026
Apache
Parameter Value
CVSS 9.3 (CRITICAL)
Fixed In 3.5.3
Type CWE-78 (OS Command Injection)
Vendor Apache
Public PoC No

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.

Attack Parameters

Attack Vector
Network
Can be exploited remotely
Attack Complexity
Low
Easy to exploit
Attack Requirements
None
No additional conditions
Privileges Required
High
Admin privileges needed
User Interaction
None
No user interaction needed

Impact Assessment

Confidentiality
High
Complete data leak
Integrity
High
Complete data modification
Availability
Low
Partial disruption

CVSS Vector v4.0

Weakness Type (CWE)