GHSA-m3px-q5gj-j9x7

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GHSA-m3px-q5gj-j9x7

Summary: kafka-python vulnerable to denial of service through an unvalidated protocol frame length

Details: 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.

References: https://nvd.nist.gov/vuln/detail/CVE-2026-10142, https://github.com/dpkp/kafka-python/pull/3019, https://github.com/dpkp/kafka-python/pull/3026, https://github.com/dpkp/kafka-python/commit/6e4831444f972d169cdd11f5c8d50333cea3f19b, https://github.com/dpkp/kafka-python/commit/9f92d0f53ecfee738c54638867c3d67f83017bca, https://github.com/dpkp/kafka-python, https://github.com/dpkp/kafka-python/releases/tag/2.3.2, https://github.com/pypa/advisory-database/tree/main/vulns/kafka-python/PYSEC-2026-2190.yaml, https://www.vulncheck.com/advisories/kafka-python-prior-to-denial-of-service-via-protocol-parser-frame-length