CVE-2026-10142

Name	CVE-2026-10142
Description	kafka-python prior to 2.3.2 contains a denial-of-service vulnerability in the protocol parser that allows a malicious broker or machine-in-the-middle attacker to exhaust memory or hang connections by sending a crafted 4-byte frame length value without bounds validation. Attackers can send a specially crafted frame length through the receive_bytes() function to trigger either a multi-gigabyte memory allocation or an uncaught ValueError that leaves the connection in a broken state, causing requests to hang and consumers to stop heartbeating until restart.
Source	CVE (at NVD; CERT, ENISA, LWN, oss-sec, fulldisc, Debian ELTS, Red Hat, Ubuntu, Gentoo, SUSE bugzilla/CVE, GitHub advisories/code/issues, web search, more)
Debian Bugs	1139878

Vulnerable and fixed packages

The table below lists information on source packages.

Source Package	Release	Version	Status
python-kafka (PTS)	bookworm	2.0.2-3	vulnerable
	trixie	2.0.2-9	vulnerable
	forky, sid	2.0.2-13	fixed

The information below is based on the following data on fixed versions.

Package	Type	Release	Fixed Version	Urgency	Origin	Debian Bugs
python-kafka	source	(unstable)	2.0.2-13			1139878

Notes

[trixie] - python-kafka <no-dsa> (Minor issue)
[bookworm] - python-kafka <postponed> (Minor issue)
[bullseye] - python-kafka <postponed> (Minor issue)
https://github.com/dpkp/kafka-python/pull/3019
https://github.com/dpkp/kafka-python/pull/3026
Fixed by: https://github.com/dpkp/kafka-python/commit/bdb46ab1fe4f090dd8bf710c7ddb778993bbc16b (3.0.0)
Fixed by: https://github.com/dpkp/kafka-python/commit/7250337f54ee60695f2a7faedd1ec2758fc7ac29 (3.0.0)