Vulnerability · Published Oct 1, 2026 · Assigned by ibm
CVE-2026-15911Confluent Kafka Python Improper TLS Certificate Validation
High 7.4
In plain English
A high-severity improper certificate validation in confluent-kafka from confluent. There are no confirmed reports of exploitation so far. The chance it is exploited in the next 30 days is estimated at 0.3% (higher than 22% of all known vulnerabilities). Ready-made attack tooling exists: public proof-of-concept code.
Severity (CVSS 3.1)7.4High
Exploit odds (30 days)0.3%top 77.5% of all CVEs
Exploited in the wildNo reportsCISA SSVC: none
Attack tooling1Public PoC
Official 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 products (as reported)
| Vendor | Product | Versions |
|---|---|---|
| confluent | confluent-kafka | 0 – through 2.14.2 |
Weakness: CWE-295 · Vector: CVSS:3.1/AV:N/AC:H/PR:N/UI:N/S:U/C:H/I:H/A:N