CVE-2023-50437Network attack vector

Privilege escalation via exposed cluster otpCookie

Published Feb 28, 2024 · Updated Aug 13, 2024

Information disclosure in Couchbase Server 7.2.0 through 7.2.3 allows remote authenticated users to obtain the cluster otpCookie. The serverGroups response returns the cookie to Full Admin users, while engageCluster2 returns it to Cluster Admin and Full Admin users. Possession of this shared cluster secret permits privilege escalation within the cluster; access to one of those administrative roles is required.

CVSS severity8.6
High
EPSS probability0.68%
Next 30 days · Sep 16, 2026
Known exploitationUnconfirmed
Based on sourced intelligence
Hinoki checkNot available
Coverage for this vulnerability

See if you're affected

Explore vulnerability checks for your environment with Hinoki.

Book a demo

Summary

What happened

Information disclosure in Couchbase Server 7.2.0 through 7.2.3 allows remote authenticated users to obtain the cluster otpCookie. The serverGroups response returns the cookie to Full Admin users, while engageCluster2 returns it to Cluster Admin and Full Admin users. Possession of this shared cluster secret permits privilege escalation within the cluster; access to one of those administrative roles is required.

The record

CVE
CVE-2023-50437
Published
Feb 28, 2024
Updated
Aug 13, 2024
Vendor
Couchbase
Product
Couchbase Server
Classifications
CWE-266, T1552
Attack vector
network
Privileges
authenticated

Timeline

How it unfolded

  1. Feb 28, 2024CVE publishedPublication date reported by the CVE source.
  2. Aug 13, 2024Record updatedLatest update available in the CVE record.

Exploitability

Present is not the same as exploitable

Compare your product and version with the public record. A matching version still requires validation against your environment.

Is a vulnerable build present?

Compare these published version ranges with your installed build and any vendor patches.

  1. Affected versionversion=7.2.0 <7.2.4

What conditions does exploitation require?

Attack vectornetwork
Required privilegesauthenticated

What is affected?

Couchbase · Couchbase Serverversion=7.2.0 <7.2.4

Published CVSS scores

8.6CISA-ADPCVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:L/A:L

CVSS describes severity. EPSS estimates exploitation probability.

Attacks

What attackers are doing with it

Daily unique IPs observed by Shadowserver honeypots for known exploited vulnerabilities (KEVs). Missing observations do not establish an absence of attacks.

Daily unique IPsNo honeypot observations are available for this CVE in the selected window.

No observations available

Sep 10, 2026Sep 16, 2026
Latest reporting daySep 16, 2026
Latest daily unique IPsUnavailable
Prior 30-day averageUnavailable
SourceShadowserver honeypots (KEV)
Vectornetwork
Privilegesauthenticated
Known exploitationUnconfirmed
Public exploitUnconfirmed

Weakness, pattern, technique

CWE-266Incorrect Privilege Assignment
T1552Unsecured Credentials

Public exploit references

No public exploit references are available in this record.

Labels summarize the accepted research assessment. They do not indicate a test against your environment.

Technologies

Your stack

See the directory against your own environment.

Your stack

Check the software in your environment

Book a demo to see how Hinoki identifies affected software and validates exploitability in your environment.

Book a demo