CVE-2026-90800

HighCVSS 8.1/10Last modified Oct 20, 2026

Description

Missing authorisation checks in chttpd in Apache CouchDB 3.5.2 and below on all platforms allows any request to read the full contents of a prefixed _user or _replicator database via an unauthorised API endpoint.

The use of prefixed system databases is very rare.

Users are recommended to upgrade to version 3.5.3, which fixes this issue.

Metrics

CVSS 4.0 8.1/10

CVSS:4.0/AV:N/AC:L/AT:P/PR:N/UI:N/VC:H/VI:H/VA:N/SC:H/SI:H/SA:N/E:U/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:Amber

Weakness enumeration

CWE-862

Affected software

No affected versions have been published.

Timeline

Published: Oct 20, 2026
Last modified: Oct 20, 2026
NVD status: Deferred

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