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.
CVE-2026-10142
Score 7.5 from GitHub Security Advisory (severity: HIGH) published 2026-06-11. the CNA's CVSS baseline 7.5; sources differ by 0.0.
- High severity, but no confirmed exploitation yet
No vendor fix yet — apply a workaround or compensating control (WAF / firewall / segmentation) and watch for a patch.
- CVSS v3
- 7.5
- EG Score
- 7.5(high)
- EPSS
- 26.8%
- KEV
- Not listed
Published
June 10, 2026
Last Modified
June 23, 2026
Advisory Details (4)
Auto-updated Jun 11, 2026kafka-python prior to 2.3.2 Denial of Service via Protocol Parser Frame Length | Advisories | VulnCheck
https://www.vulncheck.com/advisories/kafka-python-prior-to-denial-of-service-via-protocol-parser-frame-lengthkafka.net: Validate SASL/SCRAM iterations
Fix merged in dpkp/kafka-python PR #3026 on 2026-06-03 — awaiting tagged release
https://github.com/dpkp/kafka-python/pull/3026KafkaProtocol: validate network frame size; retore log-prefix; fix 0.8.2 quirk check
Fix merged in dpkp/kafka-python PR #3019 on 2026-05-30 — awaiting tagged release
https://github.com/dpkp/kafka-python/pull/3019commit 6e4831444f97 (dpkp/kafka-python)
Fix landed in dpkp/kafka-python commit 6e4831444f97 — awaiting tagged release
https://github.com/dpkp/kafka-python/commit/6e4831444f972d169cdd11f5c8d50333cea3f19bVendor Advisories for CVE-2026-10142(1)
These vendors published their own advisory mentioning this CVE — often with vendor-specific remediation steps + affected product lists not in NVD.
Weakness Classification(1)
MITRE Common Weakness Enumeration — the root-cause categories this CVE belongs to.
Data Freshness Timeline
(refreshed 32× in last 7d / 126× in last 30d)
Each row is a source pipeline that fetched or updated this CVE on that date, with what changed. For example, "NVD update" means NVD published or revised its analysis for this CVE; "MITRE cvelistV5" means we ingested or refreshed it from the CNA feed. Most recent first.
Showing the most recent 100 of 126 total refreshes for this CVE.
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Frequently asked(5)
What is CVE-2026-10142?
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What is the CVSS score of CVE-2026-10142?
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Dependency Blast Radius
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