What’s Vulnerable › Vulnerabilities

CVE-2019-11495

• Severity: critical (CVSS 9.8 v3.1)
• Exploited in the wild: not listed in CISA KEV
• EPSS: 2.1% probability of exploitation in the next 30 days
• Public exploit or detection template: none known
• Published: 2019-09-10 · updated 2026-06-17
• Weakness: CWE-335

Description

In Couchbase Server 5.1.1, the cookie used for intra-node communication was not generated securely. Couchbase Server uses erlang:now() to seed the PRNG which results in a small search space for potential random seeds that could then be used to brute force the cookie and execute code against a remote system. This has been fixed in version 6.0.0.

Affected products

• Couchbase Server: 5.1.1

References

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

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