id: PYSEC-2026-2190
published: "2026-06-10T22:16:55.350Z"
modified: "2026-07-13T05:49:18.343444Z"
aliases:
- CVE-2026-10142
- GHSA-m3px-q5gj-j9x7
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.
affected:
- package:
    name: kafka-python
    ecosystem: PyPI
    purl: pkg:pypi/kafka-python
  ranges:
  - type: ECOSYSTEM
    events:
    - introduced: "0"
    - fixed: 2.3.2
  versions:
  - 0.9.0
  - 0.9.1
  - 0.9.2
  - 0.9.3
  - 0.9.4
  - 0.9.5
  - 1.0.0
  - 1.0.1
  - 1.0.2
  - 1.1.0
  - 1.1.1
  - 1.2.0
  - 1.2.1
  - 1.2.2
  - 1.2.3
  - 1.2.4
  - 1.2.5
  - 1.3.0
  - 1.3.1
  - 1.3.2
  - 1.3.3
  - 1.3.4
  - 1.3.5
  - 1.4.0
  - 1.4.1
  - 1.4.2
  - 1.4.3
  - 1.4.4
  - 1.4.5
  - 1.4.6
  - 1.4.7
  - 2.0.0
  - 2.0.1
  - 2.0.2
  - 2.0.3
  - 2.0.4
  - 2.0.5
  - 2.0.6
  - 2.1.0
  - 2.1.1
  - 2.1.2
  - 2.1.3
  - 2.1.4
  - 2.1.5
  - 2.1.6
  - 2.2.0
  - 2.2.1
  - 2.2.10
  - 2.2.11
  - 2.2.12
  - 2.2.13
  - 2.2.14
  - 2.2.15
  - 2.2.16
  - 2.2.17
  - 2.2.18
  - 2.2.19
  - 2.2.2
  - 2.2.20
  - 2.2.3
  - 2.2.4
  - 2.2.5
  - 2.2.6
  - 2.2.7
  - 2.2.8
  - 2.2.9
  - 2.3.0
  - 2.3.1
  ecosystem_specific: {}
references:
- type: FIX
  url: https://github.com/dpkp/kafka-python/commit/6e4831444f972d169cdd11f5c8d50333cea3f19b
- type: FIX
  url: https://github.com/dpkp/kafka-python/pull/3019
- type: FIX
  url: https://github.com/dpkp/kafka-python/pull/3026
- type: FIX
  url: https://www.vulncheck.com/advisories/kafka-python-prior-to-denial-of-service-via-protocol-parser-frame-length
- type: ADVISORY
  url: https://github.com/advisories/GHSA-m3px-q5gj-j9x7
severity:
- type: CVSS_V4
  score: CVSS:4.0/AV:N/AC:L/AT:N/PR:N/UI:N/VC:N/VI:N/VA:H/SC:N/SI:N/SA:N/E:X/CR:X/IR:X/AR:X/MAV:X/MAC:X/MAT:X/MPR:X/MUI:X/MVC:X/MVI:X/MVA:X/MSC:X/MSI:X/MSA:X/S:X/AU:X/R:X/V:X/RE:X/U:X