CVE-2026-10143 - kafka-python prior to 2.3.2 DoS via SCRAM Iteration Count in scram.py

CVE-2026-10143 - kafka-python prior to 2.3.2 DoS via SCRAM Iteration Count in scram.py

https://cvefeed.io/rssfeed/latest.atom / Wed, 06/10/2026 - 23:28
CVE ID :CVE-2026-10143
Published : June 10, 2026, 8:22 p.m. | 1 hour, 6 minutes ago
Description :kafka-python prior to 2.3.2 contains a denial-of-service vulnerability in SCRAM authentication handling that allows a malicious or machine-in-the-middle broker to freeze the client event loop by supplying an excessively large iteration count. In scram.py, ScramClient.process_server_first_message() passes the broker-controlled SCRAM iteration count directly to hashlib.pbkdf2_hmac() without validation, blocking producer sends, consumer polls, admin operations, and heartbeats, which can cause consumer group eviction and repeated reconnect failures.
Severity: 8.7 | HIGH
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