CVE-2026-10143

HIGHPre-NVD 7.57.5—
EchelonGraph scoreHIGH confidence

Score 7.5 from GitHub Security Advisory (severity: HIGH) published 2026-06-11. a secondary CVSS source baseline 7.5; sources differ by 0.0.

Triggered by: GitHub Security Advisory CVSS
Sources: epss, ghsa, secondary
Trending — 4 sources updated this week
7.5
EchelonGraph verdictPlan a fixSerious severity, but no confirmed exploitation yet.
  • High severity, but no confirmed exploitation yet
CISA-KEV: Not listedEPSS: 1%CVSS: 7.5Exploit: NoneExposed: 0

A fix is available — apply it.

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.

CVSS v3
7.5
EG Score
7.5(high)
EPSS
40.2%
KEV
Not listed

Published

June 10, 2026

Last Modified

July 1, 2026

Advisory Details (4)

Auto-updated Jun 11, 2026
Upstream fix merged — awaiting tagged release. Sources: github_pr, github_commit.
generic

kafka-python prior to 2.3.2 DoS via SCRAM Iteration Count in scram.py | Advisories | VulnCheck

https://www.vulncheck.com/advisories/kafka-python-prior-to-dos-via-scram-iteration-count-in-scram-py
github_pr

kafka.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/3026
github_pr

KafkaProtocol: 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/3019
github_commit

commit 6e4831444f97 (dpkp/kafka-python)

Fix landed in dpkp/kafka-python commit 6e4831444f97 — awaiting tagged release

https://github.com/dpkp/kafka-python/commit/6e4831444f972d169cdd11f5c8d50333cea3f19b

Vendor Advisories for CVE-2026-10143(4)

These vendors published their own advisory mentioning this CVE — often with vendor-specific remediation steps + affected product lists not in NVD.

Patch Availability(3)

Vendor / EcosystemFixed in / PatchReleasedSource
redhatquay/quay-rhel8:17824877172026-06-30redhat
redhatquay/quay-rhel8:17819373572026-06-25redhat
redhatquay/quay-rhel8:17818780702026-06-23redhat

Patches are aggregated from vendor advisories (Red Hat, Microsoft, Cisco, GitHub) and package ecosystems (OSV, GHSA). Multiple rows for the same upstream release have been deduplicated.

Weakness Classification(2)

MITRE Common Weakness Enumeration — the root-cause categories this CVE belongs to.

Data Freshness Timeline

(refreshed 44× in last 7d / 148× 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 148 total refreshes for this CVE.

  1. 2026-07-07 03:28 UTCEG score recompute
  2. 2026-07-07 03:28 UTCVendor advisory
  3. 2026-07-07 03:28 UTCGHSA enrichment
  4. 2026-07-06 16:27 UTCEPSS rescore
  5. 2026-07-06 02:40 UTCEG score recompute
  6. 2026-07-06 02:40 UTCVendor advisory
  7. 2026-07-06 02:40 UTCGHSA enrichment
  8. 2026-07-06 02:23 UTCEPSS rescore
  9. 2026-07-05 13:40 UTCEG score recompute
  10. 2026-07-05 13:40 UTCVendor advisory
  11. 2026-07-05 13:40 UTCGHSA enrichment
  12. 2026-07-05 02:30 UTCEPSS rescore
  13. 2026-07-05 02:30 UTCEPSS rescore
  14. 2026-07-05 00:40 UTCEG score recompute
  15. 2026-07-05 00:40 UTCVendor advisory
  16. 2026-07-05 00:39 UTCGHSA enrichment
  17. 2026-07-04 11:39 UTCEG score recompute
  18. 2026-07-04 11:39 UTCVendor advisory
  19. 2026-07-04 11:39 UTCGHSA enrichment
  20. 2026-07-04 06:31 UTCEPSS rescore
  21. 2026-07-03 14:58 UTCEG score recompute
  22. 2026-07-03 14:58 UTCVendor advisory
  23. 2026-07-03 14:58 UTCGHSA enrichment
  24. 2026-07-03 01:56 UTCEG score recompute
  25. 2026-07-03 01:56 UTCVendor advisory
Show 75 more
  1. 2026-07-03 01:56 UTCGHSA enrichment
  2. 2026-07-02 12:54 UTCEG score recompute
  3. 2026-07-02 12:54 UTCVendor advisory
  4. 2026-07-02 12:54 UTCGHSA enrichment
  5. 2026-07-01 23:54 UTCEG score recompute
  6. 2026-07-01 23:54 UTCVendor advisory
  7. 2026-07-01 23:54 UTCGHSA enrichment
  8. 2026-07-01 15:06 UTCEPSS rescore
  9. 2026-07-01 15:06 UTCEPSS rescore
  10. 2026-07-01 10:54 UTCEG score recompute
  11. 2026-07-01 10:54 UTCVendor advisory
  12. 2026-07-01 10:54 UTCGHSA enrichment
  13. 2026-06-30 23:22 UTCEPSS rescore
  14. 2026-06-30 21:50 UTCEG score recompute
  15. 2026-06-30 21:50 UTCVendor advisory
  16. 2026-06-30 21:50 UTCGHSA enrichment
  17. 2026-06-30 08:46 UTCEG score recompute
  18. 2026-06-30 08:46 UTCVendor advisory
  19. 2026-06-30 08:46 UTCGHSA enrichment
  20. 2026-06-29 19:46 UTCEG score recompute
  21. 2026-06-29 19:46 UTCVendor advisory
  22. 2026-06-29 19:46 UTCGHSA enrichment
  23. 2026-06-29 06:46 UTCEG score recompute
  24. 2026-06-29 06:46 UTCVendor advisory
  25. 2026-06-29 06:46 UTCGHSA enrichment
  26. 2026-06-28 16:15 UTCEG score recompute
  27. 2026-06-28 16:15 UTCVendor advisory
  28. 2026-06-28 16:15 UTCGHSA enrichment
  29. 2026-06-28 14:07 UTCEPSS rescore
  30. 2026-06-28 04:56 UTCEPSS rescore
  31. 2026-06-28 04:56 UTCEPSS rescore
  32. 2026-06-28 03:14 UTCEG score recompute
  33. 2026-06-28 03:14 UTCVendor advisory
  34. 2026-06-28 03:14 UTCGHSA enrichment
  35. 2026-06-27 14:14 UTCEG score recompute
  36. 2026-06-27 14:14 UTCVendor advisory
  37. 2026-06-27 14:14 UTCGHSA enrichment
  38. 2026-06-27 03:08 UTCEPSS rescore
  39. 2026-06-27 01:14 UTCEG score recompute
  40. 2026-06-27 01:14 UTCVendor advisory
  41. 2026-06-27 01:14 UTCGHSA enrichment
  42. 2026-06-26 12:14 UTCEG score recompute
  43. 2026-06-26 12:14 UTCVendor advisory
  44. 2026-06-26 12:14 UTCGHSA enrichment
  45. 2026-06-25 22:49 UTCEG score recompute
  46. 2026-06-25 22:49 UTCVendor advisory
  47. 2026-06-25 22:49 UTCGHSA enrichment
  48. 2026-06-25 13:49 UTCEPSS rescore
  49. 2026-06-25 09:49 UTCEG score recompute
  50. 2026-06-25 09:49 UTCVendor advisory
  51. 2026-06-25 09:49 UTCGHSA enrichment
  52. 2026-06-24 20:49 UTCEG score recompute
  53. 2026-06-24 20:49 UTCVendor advisory
  54. 2026-06-24 20:49 UTCGHSA enrichment
  55. 2026-06-24 14:05 UTCEPSS rescore
  56. 2026-06-24 04:28 UTCEG score recompute
  57. 2026-06-24 04:28 UTCVendor advisory
  58. 2026-06-24 04:27 UTCGHSA enrichment
  59. 2026-06-23 21:32 UTCEPSS rescore
  60. 2026-06-23 15:25 UTCEG score recompute
  61. 2026-06-23 15:25 UTCGHSA enrichment
  62. 2026-06-23 02:23 UTCEG score recompute
  63. 2026-06-23 02:23 UTCGHSA enrichment
  64. 2026-06-22 14:25 UTCEPSS rescore
  65. 2026-06-22 14:25 UTCEPSS rescore
  66. 2026-06-22 13:21 UTCEG score recompute
  67. 2026-06-22 13:21 UTCGHSA enrichment
  68. 2026-06-22 00:21 UTCEG score recompute
  69. 2026-06-22 00:21 UTCGHSA enrichment
  70. 2026-06-21 14:56 UTCEPSS rescore
  71. 2026-06-21 14:56 UTCEPSS rescore
  72. 2026-06-21 10:03 UTCEG score recompute
  73. 2026-06-21 10:03 UTCGHSA enrichment
  74. 2026-06-21 01:59 UTCEPSS rescore
  75. 2026-06-21 01:59 UTCEPSS rescore

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Frequently asked(5)

What is CVE-2026-10143?
CVE-2026-10143 is a high vulnerability published on June 10, 2026. 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.processserverfirstmessage()…
When was CVE-2026-10143 disclosed?
CVE-2026-10143 was first published in the National Vulnerability Database on June 10, 2026, with the most recent update on July 1, 2026. EchelonGraph re-ingests CVE updates from NVD on a 2-hour cycle, so this page reflects the latest published state.
Is CVE-2026-10143 actively exploited?
CVE-2026-10143 is not currently on CISA's Known Exploited Vulnerabilities catalog. FIRST EPSS estimates a 40.2% percentile likelihood of exploitation in the next 30 days — higher percentiles indicate greater predicted risk.
What is the CVSS score of CVE-2026-10143?
CVE-2026-10143 has a CVSS v3 base score of 7.5 (NVD).
How do I remediate CVE-2026-10143?
Patch to the fixed version published by the affected vendor. Where vendor advisories exist for CVE-2026-10143, EchelonGraph cross-links them in the Vendor Advisories panel below — those typically contain the canonical remediation steps, fixed version numbers, and any vendor-specific mitigations.

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