Dashboard / CVE-2026-10143

CVE-2026-10143

HIGH
MEDIUM Priority: 0.04 BB Relevance: 75/100
Published: 2026-06-10 Modified: 2026-11-08 First seen: 2026-11-08 Status: active

Attack Surface

Network Low Complexity No Auth No Interaction

CVSS Vector Breakdown

AV: Network
AC: Low
PR: None
UI: None
S: Unchanged
C: None
I: None
A: High

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.

Weakness Classification (1)

Affected Software (1)

VendorProductVersion
Dana Powers kafka-python 0 < 2.3.2

References & Advisories (4)

Bug Bounty Relevance

75 / 100
✓ Network accessible
✓ No authentication
✓ Low complexity
✓ No user interaction

CVSS Score

7.5 / 10.0 v3.1
CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H

EPSS — Exploitation Probability

0.52%
Raw Score 0.005170
Percentile 44.5%
Date 2026-11-13

EPSS Trend

2026-11-13
0.00517
2026-11-12
0.00517
2026-11-10
0.00517
2026-11-09
0.00517
2026-11-08
0.00517

Intelligence Sources

mitre ref →

External Links