CVE-2026-10143

HIGHPre-NVD 7.57.5—
EchelonGraph scoreMEDIUM 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 — 3 sources updated this week
7.5EG
EchelonGraph verdictPlan a fixSerious severity, but no confirmed exploitation yet.
  • High severity, but no confirmed exploitation yet
CISA-KEV: Not listedEPSS PROB: 0.5%CVSS: 7.5Exploit: None knownExposed services: Not assessed

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
7.5HIGHmedium confidence
EG Risk
49
EG Risk 49/100CISA SSVC

EG Risk is EchelonGraph's 0–100 priority score: it fuses intrinsic severity with real-world exploitation and automatability so you can rank equal-severity CVEs and fix the most dangerous first. Higher = act sooner. Distinct from the 0–10 EG Score (severity).

How it’s computed
Severity75% × 45%
Exploitation1% × 40%
Automatability100% × 15%
CISA SSVC: Track at low or medium mission impact; Attend at high (mission-essential systems).
Action: A fix is available. Apply it within your standard update timelines at low or medium mission impact and sooner than that at high.
EPSS PROB
0.5%
EPSS %ILE
42nd
KEV
Not listed

CISA SSVCTrack at low or medium mission impact; Attend at high (mission-essential systems).

A fix is available. Apply it within your standard update timelines at low or medium mission impact and sooner than that at high.

Exploitation none (CISA Vulnrichment) · Automatable yes (CISA Vulnrichment) · Technical impact partial (CISA Vulnrichment). Mission impact is CISA's Mission & Well-being decision point, and only you can judge it: high means the affected system is essential to your organisation's mission, or its compromise could cause irreversible harm to people. CISA's decision table

Published

June 10, 2026

Last Modified

October 8, 2026

Advisory Details (4)

Auto-updated Jun 11, 2026
Patch available. 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(8)

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

Patch Availability(7)

Vendor / EcosystemFix (by version range) / PatchReleasedSource
redhatquay/quay-rhel8:17885938432026-09-22redhat
redhatquay/quay-rhel9:17861819812026-08-12redhat
redhatquay/quay-rhel8:17843519662026-07-21redhat
redhatquay/quay-rhel9:17839558462026-07-16redhat
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.

Affected Packages

(5 across 5 ecosystems)
Debian:11(1)
PackageVulnerable rangeFix by version rangeDependents
python-kafka2.0.1-2 ... 2.0.2-9 (13 versions)
  • every version on: no fix on record
—
Debian:12(1)
PackageVulnerable rangeFix by version rangeDependents
python-kafka2.0.2-10 ... 2.0.2-9 (11 versions)
  • every version on: no fix on record
—
Debian:13(1)
PackageVulnerable rangeFix by version rangeDependents
python-kafka2.0.2-10, 2.0.2-11, 2.0.2-12, 2.0.2-13, 2.0.2-9
  • every version on: no fix on record
—
Debian:14(1)
PackageVulnerable rangeFix by version rangeDependents
python-kafka2.0.2-10, 2.0.2-11, 2.0.2-9
  • every version up to 2.0.2-12: fixed in 2.0.2-12
—
PyPI(1)
PackageVulnerable rangeFix by version rangeDependents
kafka-python0.9.0 ... 2.3.1 (68 versions)
  • every version up to 2.3.2: fixed in 2.3.2
—

Weakness Classification(2)

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

Data Freshness Timeline

(refreshed 11× in last 7d / 32× 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 363 total refreshes for this CVE.

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

Related CVEs(same product + same vendor + same CWE)

Same product

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Debian:11:python-kafka

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 on June 10, 2026, with the most recent update on October 8, 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 0.5% probability of exploitation in the next 30 days (42nd percentile of EPSS-scored CVEs).
What is the CVSS score of CVE-2026-10143?
CVE-2026-10143 has a CVSS base score of 7.5 (a secondary CVSS source that NVD displays; NVD's own analysis pending).
How do I remediate CVE-2026-10143?
A fix for CVE-2026-10143 is available: update to the fixed version the vendor names in its advisory. The vendor advisories EchelonGraph has for CVE-2026-10143 are linked in the Vendor Advisories panel on this page.

Dependency Blast Radius

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