What is CVE-2023-43768?

CVE-2023-43768 is a high-severity vulnerability in Couchbase Server, classified under Allocation of Resources Without Limits or Throttling. CVSS score: 7.5/10. Published 2024-03-27.

How severe is CVE-2023-43768?

High severity. CVSS v3 base score is 7.5 out of 10.

Resource exhaustion in Couchbase Server

CVE-2023-43768

An issue was discovered in Couchbase Server 6.6.x through 7.2.0, before 7.1.5 and 7.2.1. Unauthenticated users may cause memcached to run out of memory via large commands.

Published 2024-03-27 · last modified 2026-06-17.

CVSS v3 metric

CVSS v3 base score 7.5 (High). Vector: CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H.

EPSS exploit prediction

EPSS: 0.007 (54.0th percentile), scored 2026-10-19.

Very low probability of exploitation in the next 30 days; routine patching cadence is appropriate. 54th percentile — 54.0% of CVEs in the catalogue have a lower EPSS than this one. How to read EPSS.

EPSS over last 30 days · oldest: 0.007 · newest: 0.007 · change: 0.000

Affected products

Couchbase Server — versions 7.2.0

Weakness classification (CWE)

CWE-770 — Allocation of Resources Without Limits or Throttling

References

forums.couchbase.com/tags/security (Product)
www.couchbase.com/downloads (Product)
docs.couchbase.com/server/current/release-notes/relnotes.html (Release Notes)
www.couchbase.com/alerts/ (Vendor Advisory)

Frequently asked questions

What is CVE-2023-43768?: CVE-2023-43768 is a high-severity vulnerability in Couchbase Server, classified under Allocation of Resources Without Limits or Throttling. CVSS score: 7.5/10. Published 2024-03-27.
How severe is CVE-2023-43768?: High severity. CVSS v3 base score is 7.5 out of 10.