CVE-2026-90800

CVSS 8.1 (high) · published 2026-10-20

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.

Weakness: CWE-862

Source: NVD CVE-2026-90800

References

• https://lists.apache.org/thread.html/pj83174r8f8f64odf47fwhozbfjtot0f
• https://lists.apache.org/thread/vng8vqjwgy1qlrv14wzrgs7pv4gj7gwr
• http://www.openwall.com/lists/oss-security/2026/10/20/15

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