CVE-2026-15911

High

Description

Confluent Kafka Python client's HashiCorp Vault KMS integration could allow a remote attacker to obtain sensitive information due to improper TLS certificate validation.

SeverityHigh

CVSS7.4

Exploit probability—

ProductConfluent-kafka

PublishedOct 1, 2026

First seenOct 1, 2026

Weakness typeCWE-295CWE-295

How to fix

Patches

support.confluent.io/hc/en-us/articles/54133146724244-CONFSA-2026-22-CVE-2026-15911-Confluent-Kafka-Python-Client-Vulnerability-TLS-Certificate-verification-disabled-by-default-in-HashiCorp-Vault-KMS-Integration

Affected products

Product	Affected versions	Fixed in
confluent confluent-kafka	v ≤ 2.14.2	—

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