CVE-2026-15911 Confluent Kafka Python client - Information Disclosure

Confluent Kafka Python client contains a sensitive information disclosure caused by improper TLS certificate validation in HashiCorp Vault KMS integration, letting remote attackers obtain sensitive information, exploit requires network access.

CVSS base score 7.4 /10
High
CISA KEV
Not listed
Public exploit
Proof of concept available
Authentication
Not required
EPSS
0.20% chance of exploitation in 30 days
View the NVD record ↗

Details

Type
Information Disclosure
Impact
Information Disclosure
CVSS vector
CVSS:3.1/AV:N/AC:H/PR:N/UI:N/S:U/C:H/I:H/A:N
Published
1 October 2026
Updated
15 October 2026
Weakness
CWE-295

Vendor fix

Update to the latest version with proper TLS certificate validation.

Patching closes this CVE. It does not tell you which of your systems run the affected version, or what else is exposed alongside them.

References

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