Missing authentication in Apache CouchDB
Key facts
- Attack vector
- Network
- Privileges required
- None
- User interaction
- None
- Attack complexity
- Low
- Impact type
- Security bypass
- Confidentiality · integrity · availability
- High · High · High
- Fix status
- No fix listed
Attack profile from CVSS 3.1 · NVD. Fix status from CNA. Impact type from CWE-306.
Summary
CouchDB version 3.0.0 shipped with a new configuration setting that governs access control to the entire database server called `require_valid_user_except_for_up`. It was meant as an extension to the long standing setting `require_valid_user`, which in turn requires that any and all requests to CouchDB will have to be made with valid credentials, effectively forbidding any anonymous requests. The new `require_valid_user_except_for_up` is an off-by-default setting that was meant to allow requiring valid credentials for all endpoints except for the `/_up` endpoint. However, the implementation of this made an error that lead to not enforcing credentials on any endpoint, when enabled. CouchDB versions 3.0.1[1] and 3.1.0[2] fix this issue.
Why it matters now
SSVC decision points
Not available: CISA has not published SSVC decision points for this record.
Affected products
| Vendor | Product | Affected versions | Fixed in | Status | Source |
|---|---|---|---|---|---|
| — | Apache CouchDB | Apache CouchDB 3.0.0 | — | No fix listed | CNA |
- Apache CouchDB Vendor— Affected Apache CouchDB 3.0.0 Fixed in — No fix listed CNA
Remediation
No fixed version listed by the sources yet.
Vendor assessments
Timeline
- 2026-10-02 Threatist record created from CVE-2020-1955
- 2026-10-03 Alias added: GHSA-6625-2573-pv96
References
More Apache Couchdb vulnerabilities
- TI-2022-08521 Remote Code Execution Vulnerability in Packaging KEVCVSS 3.1CRITICAL 9.8
- TI-2017-09360 Improper privilege management in Apache CouchDB CVSS 3.0CRITICAL 9.8
- TI-2017-09361 OS command injection in Apache CouchDB CVSS 3.0HIGH 7.2
- TI-2018-05784 Improper input validation in Apache CouchDB CVSS 3.0HIGH 7.2
- TI-2018-08426 CouchDB administrative users before 2.2.0 can configure the database server via HTTP(S). CVSS 3.0HIGH 7.2
- TI-2014-02145 Apache CouchDB 1.5.0 and earlier allows remote attackers to cause a denial of service… CVSS 2.0MEDIUM 5.0
Sources
- CVE-2020-1955 · CVE Program
- CVE-2020-1955 · NVD
- FIRST EPSS
- GHSA-6625-2573-pv96 · GitHub Advisory Database · CC BY 4.0
- CVE-2020-1955 · Red Hat security data · CC BY 4.0
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