PYSEC-2026-2190

    Dashboard / Vulnerabilities / PYSEC-2026-2190

    PYSEC-2026-2190

    Published: 10 Jun 2026Last Modified: 10 Sept 2026

    Summary:

    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://github.com/dpkp/kafka-python/commit/6e4831444f972d169cdd11f5c8d50333cea3f19b, https://github.com/dpkp/kafka-python/pull/3019, https://github.com/dpkp/kafka-python/pull/3026, https://www.vulncheck.com/advisories/kafka-python-prior-to-denial-of-service-via-protocol-parser-frame-length, https://github.com/advisories/GHSA-m3px-q5gj-j9x7

    Affected packages

    Package

    Name: kafka-python

    Purl: pkg:pypi/kafka-python

    Affected ranges

    Type: ECOSYSTEM

    Events:

    Introduced- 0
    Fixed -2.3.2

    Affected versions

    0.9.0
    0.9.1
    0.9.2
    0.9.3
    0.9.4
    0.9.5

    Common Vulnerability Scoring System

    Attack Vector
    Network
    Adjacent
    Local
    Physical
    Privileges Required
    None
    Low
    High
    User Interaction
    None
    Required
    Scope
    Unchanged
    Changed
    Confidentiality
    None
    Low
    High
    Integrity
    None
    Low
    High
    Availability
    None
    Low
    High
    PYSEC-2026-2190 | CVE-DB