CVE-2020-9040

Severity: high (CVSS 7.5 v3.1)
Exploited in the wild: not listed in CISA KEV
EPSS: 0.7% probability of exploitation in the next 30 days
Public exploit or detection template: none known
Published: 2020-06-08 · updated 2026-06-17
Weakness: CWE-295

Description

Couchbase Server Java SDK before 2.7.1.1 allows a potential attacker to forge an SSL certificate and pose as the intended peer. An attacker can leverage this flaw by crafting a cryptographically valid certificate that will be accepted by Java SDK's Netty component due to missing hostname verification.

Affected products

Couchbase Server Java Sdk: from 1.7.1 before 2.7.1.1 — fixed in 2.7.1.1

How to fix

Upgrade to a fixed version: Couchbase Server Java Sdk 2.7.1.1. Check the vendor advisory for mitigations.

References

https://www.couchbase.com/resources/security#SecurityAlerts
https://www.couchbase.com/resources/security#SecurityAlerts

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