Security readout for executives and security teams
Plain-English summary
CVE-2023-49930 is a critical access-control flaw in Couchbase Server before 7.2.4. The issue involves insufficient restrictions around cURL calls to the /diag/eval diagnostic function, creating potential for severe confidentiality, integrity, and availability impact if exposed.
Executive priority
Treat this as urgent for any Couchbase deployment below 7.2.4. Prioritize internet-exposed or broadly reachable servers first, then complete fleet-wide verification and upgrade tracking.
Technical view
The CVE describes CWE-284 improper access control affecting Couchbase Server before 7.2.4. CVSS 3.1 rates it 9.8 with network attack vector, low complexity, no privileges, and no user interaction. Public details are sparse; the source bundle does not describe exploit mechanics or confirmed attacker activity.
Likely exposure
Exposure is most likely in environments running Couchbase Server versions earlier than 7.2.4, especially where administrative or diagnostic interfaces are reachable from untrusted networks. The provided affected-product metadata is incomplete, so teams should verify directly against Couchbase guidance.
Exploitation context
The source bundle does not show CISA KEV listing or cited evidence of active exploitation. Risk remains high because the CVSS vector indicates unauthenticated network reachability, low complexity, and high impact across confidentiality, integrity, and availability.
Researcher notes
Evidence is limited to the CVE description, CVSS vector, CWE-284 classification, and Couchbase reference links. The bundle does not provide CPEs, detailed affected-version ranges beyond before 7.2.4, exploit details, or explicit mitigation text.
Mitigation direction
- Upgrade Couchbase Server to 7.2.4 or later where applicable.
- Review Couchbase release notes and alerts for vendor-specific guidance.
- Restrict Couchbase administrative and diagnostic interfaces to trusted networks.
- Remove public internet exposure for Couchbase management surfaces.
- Monitor vendor advisories for updated affected-version details.
Validation and detection
- Inventory all Couchbase Server instances and versions.
- Confirm affected systems are upgraded to 7.2.4 or later.
- Review network access to Couchbase administrative and diagnostic endpoints.
- Check logs for unexpected access to /diag/eval.
- Compare findings against Couchbase alerts and release notes.
Public sources used
Generated from the cited source records. This long-tail analysis has not been individually reviewed by a named human.
Conservative CVE-to-ATT&CK context
These mappings and lookup hints may be relevant to the vulnerability behavior, CWE, affected product, or exposure path. Glexia-inferred context is not an official MITRE, ATT&CK, CWE, or CVE Program mapping.
ATT&CK lookup starting points
Use these exact CWE pages and searches to review the Glexia ATT&CK library from this CVE's weakness and description context.
CWE-284: Authorization and privilege behavior lookup
Authorization weaknesses can support privilege escalation and valid-account review, depending on exploit path. Open the exact CWE lookup page first, then review the ATT&CK searches from that MITRE weakness context. This is a Glexia lookup hint, not an official ATT&CK mapping.
Open ATT&CK lookupCVE-2023-49930 mapping review
Open the CVE-to-ATT&CK bridge for reviewed, inferred, or future official mappings tied to this CVE.
Open ATT&CK lookup- Severity
- Critical
- CVSS
- 9.8 (3.1)
- Known Exploited
- No
- Published
Vector: CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H
CNA and ADP enrichment extracted from CVE v5
These fields come from the CVE record and ADP containers, not from Glexia's Take. They preserve time-varying source decisions such as CISA SSVC, KEV status, CVSS metrics, and provider references.
CVSS vector scores
1 official scoreWe collect every scored CVSS vector available in the official CNA and ADP containers. When more than one version is present, the table keeps the source vectors side by side instead of collapsing them into the highest score.
CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H3.95.9Primary CVE scoreVulnerability scoring details
Base CVSS 3.1 score
9.8CriticalVector: CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H
Source materials
- CVE List V5 sourceCVE List V5
- https://forums.couchbase.com/tags/securityCVE reference
- https://docs.couchbase.com/server/current/release-notes/relnotes.htmlCVE reference
- https://www.couchbase.com/alerts/CVE reference
Products and packages named in the record
CWE details
CWE links open Glexia weakness intelligence pages with official CWE context, developer remediation guidance, and related CVE mappings.
Improper Access Control
Improper Access Control represents a recurring weakness pattern that can create exploitable paths when design, validation, or implementation controls are missing.