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Apache CouchDB: Auth bypass in prefixed _users and _replicator databases

Type: advisorySource: Official CVE List1 source record

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.

Announced Source revision 1
Original source ↗

CVE-2026-90800

Primary source · Revision 1

Imported from structured advisory data. Source references identify upstream records or fields; verify affected versions and your deployed configuration.

Security context

Source reference: cve:CVE-2026-90800

Apache CouchDB

Source reference: /containers/cna/affected/0/product

Affected versions
Not stated in this record
Fixed versions
Not stated in this record
Prerequisites
Not stated in this record

Structured affected-version data

Original package identities and version rules from this source.

[
  {
    "vendor": "Apache Software Foundation",
    "product": "Apache CouchDB",
    "versions": [
      {
        "status": "affected",
        "version": "0",
        "lessThan": "3.5.3",
        "versionType": "semver"
      }
    ],
    "defaultStatus": "unaffected"
  }
]
Related CVEs
CVE-2026-90800

Source reference: /cveMetadata/cveId

Publisher severity

high

Source reference: /containers/cna/metrics

Event
#42493 · Revision 1
Added to Heist Feed
Publisher date
Read the original announcement