CVE-2020-9039 describes a critical broken access control vulnerability in Couchbase Server versions 4.0.0 through 5.5.1, where the projector and indexer REST endpoints, including the /settings endpoint, allowed unauthenticated access. This flaw enables attackers to update configurations and collect performance profiles without authentication. With a CVSS score of 9.8 (Critical) and an EPSS score indicating high exploitability, this vulnerability poses a significant risk due to its network-based attack vector, low complexity, and potential for complete compromise of confidentiality, integrity, and availability. While not listed in CISA's KEV catalog, exploit intelligence shows available Nuclei templates and significant community discussion, suggesting a high likelihood of exploitation despite no known active exploitation or Metasploit modules.
| Vendor | Product | Version(s) | CPE |
|---|---|---|---|
>= 4.6.0, <= 4.6.5CPE matchmatch criteria | cpe:2.3:a:couchbase:couchbase_server:*:*:*:*:*:*:*:* | ||
4.0.0CPE matchmatch criteria | cpe:2.3:a:couchbase:couchbase_server:4.0.0:*:*:*:*:*:*:* | ||
4.1.0CPE matchmatch criteria | cpe:2.3:a:couchbase:couchbase_server:4.1.0:*:*:*:*:*:*:* | ||
4.1.1CPE matchmatch criteria | cpe:2.3:a:couchbase:couchbase_server:4.1.1:*:*:*:*:*:*:* | ||
4.5.0CPE matchmatch criteria | cpe:2.3:a:couchbase:couchbase_server:4.5.0:*:*:*:*:*:*:* |
CVSS version used by this source: 3.1
CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H
The average CVE in this peer group has 0.0 Twitter, 0.1 Reddit, 0.3 Bluesky, 0.3 Mastodon, and 2.4 GitHub mentions.
No media coverage found for this CVE.
The average CVE in this peer group has 0.3 InfoSec Media, 0.0 Vendor Blog, and 0.0 Security Researcher mentions.
Remediation records are not available for this CVE.