CVE-2026-90800
Missing authorisation checks in chttpd in Apache CouchDB 3.5.2 and below on all platforms allows…
- Risk score
- 64/100
- CVSS
- 8.1 v4.0
- Exploit chance (30 days)
- 0.6%
- Published
- 20 Oct 2026
Open in the live forecast Today's forecast
What to know
- What it is
- 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, whic…
- Affected
- See advisory
- Fix
- Upgrade the product to 3.5.3 or later.
- Exploitation
- No known exploitation
Why it is Amber
- CVSS 8.1 high
- Remotely exploitable without logging in
References
Original 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.
Last activity 20 Oct 2026. Patch Forecast updates every hour.