# CVE-2026-15911: Confluent Kafka Python Improper TLS Certificate Validation

> CVE-2026-15911: Confluent Kafka Python Improper TLS Certificate Validation. CVSS 7.4 (CVSS 3.1).

Canonical: https://rewindex.com/cve/CVE-2026-15911
Last updated: 2026-10-06T02:17:04Z

- Published: 2026-10-01 18:29 UTC · Updated: 2026-10-06 02:17 UTC · Assigner: ibm
- CVSS: 7.4 (CVSS 3.1) · Severity: High · Vector: CVSS:3.1/AV:N/AC:H/PR:N/UI:N/S:U/C:H/I:H/A:N
- EPSS: 0.30%, 22th percentile (scored 2026-10-25)
- CISA KEV: no
- CWE: CWE-295

## 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.

## Affected vendors and products

- confluent: confluent-kafka

## Tracked companies

- [Confluent](https://rewindex.com/company/confluent.md)

## References

- [CVE record on cve.org](https://www.cve.org/CVERecord?id=CVE-2026-15911)
- [NVD entry](https://nvd.nist.gov/vuln/detail/CVE-2026-15911)
- [https://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](https://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)

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_Sources: CVE records from the CVE Program (cve.org). CVE® is a registered trademark of The MITRE Corporation. (https://www.cve.org/) This product uses data from the NVD API but is not endorsed or certified by the NVD. (https://nvd.nist.gov/) Known Exploited Vulnerabilities catalog from CISA. (https://www.cisa.gov/known-exploited-vulnerabilities-catalog) EPSS scores from FIRST (Exploit Prediction Scoring System). (https://www.first.org/epss/)_


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Canonical: https://rewindex.com/cve/CVE-2026-15911 · Markdown: https://rewindex.com/cve/CVE-2026-15911.md · JSON: https://rewindex.com/api/v1/cves/CVE-2026-15911 · Data licensed CC BY 4.0 (https://creativecommons.org/licenses/by/4.0/) · Generated 2026-10-26T03:12:07.659Z