CVE-2026-10143

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Source
https://cve.org/CVERecord?id=CVE-2026-10143
Import Source
https://storage.googleapis.com/cve-osv-conversion/osv-output/CVE-2026-10143.json
JSON Data
https://api.osv.dev/v1/vulns/CVE-2026-10143
Aliases
Downstream
CGA (8)
DEBIAN (1)
UBUNTU (1)
Published
2026-06-10T20:22:39Z
Modified
2026-11-09T02:46:49Z
Severity
  • 8.7 (High) CVSS_V4 - 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 CVSS Calculator
Summary
kafka-python prior to 2.3.2 DoS via SCRAM Iteration Count in scram.py
Details

kafka-python prior to 2.3.2 contains a denial-of-service vulnerability in SCRAM authentication handling that allows a malicious or machine-in-the-middle broker to freeze the client event loop by supplying an excessively large iteration count. In scram.py, ScramClient.process_server_first_message() passes the broker-controlled SCRAM iteration count directly to hashlib.pbkdf2_hmac() without validation, blocking producer sends, consumer polls, admin operations, and heartbeats, which can cause consumer group eviction and repeated reconnect failures.

Database specific 
{
    "cna_assigner": "VulnCheck",
    "cwe_ids": [
        "CWE-400"
    ],
    "osv_generated_from": "https://github.com/CVEProject/cvelistV5/tree/main/cves/2026/10xxx/CVE-2026-10143.json"
}
References

Affected packages

Git / github.com/dpkp/kafka-python

Affected ranges

Type
GIT
Repo
https://github.com/dpkp/kafka-python
Events
Introduced
0 Unknown introduced commit / All previous commits are affected
Fixed
054b570c971f6747aeb01a130d80f7d156152e13
Fixed
6e4831444f972d169cdd11f5c8d50333cea3f19b
Database specific
Show details 
{
    "extracted_events": [
        {
            "cpe": "cpe:2.3:a:dpkp:kafka-python:*:*:*:*:*:python:*:*",
            "range": [
                {
                    "introduced": "0"
                },
                {
                    "fixed": "2.3.2"
                }
            ],
            "source": "CPE_RANGE"
        },
        {
            "range": [
                {
                    "fixed": "6e4831444f972d169cdd11f5c8d50333cea3f19b"
                }
            ],
            "source": "REFERENCES_COMMIT"
        }
    ]
}

Affected versions

0.*
0.1-alpha
1.*
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.*
2.0.0
2.0.1
2.0.2
2.0.3
2.0.4
2.0.5
2.1.0
2.1.1
2.1.2
2.1.3
2.1.4
2.1.5
2.2.0
2.2.1
2.2.10
2.2.11
2.2.12
2.2.13
2.2.2
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
v0.*
v0.8.0
v0.9.0
v0.9.1
v0.9.2
v0.9.3
v0.9.4
v0.9.5

Database specific

source 
"https://storage.googleapis.com/cve-osv-conversion/osv-output/CVE-2026-10143.json"