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CVE-2026-10142 kafka-python prior to 2.3.2 contains a denial-of-service vulnerability in the protocol parser that allows a malicious…

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.

Affected products and versions

Product Affected versions Fixed in
kafka-python Versions not published

References

Timeline

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CVE-2026-10143 kafka-python prior to 2.3.2 contains a denial-of-service vulnerability in SCRAM authentication handling that allows a… 7.5 High
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