CVE-2022-23652

HIGHNVD 8.88.8—
EchelonGraph scoreMEDIUM confidence

This high-severity CVE scores 8.8 under NVD CVSS v3. EPSS exploit probability: 1.4%, top 30% of all CVEs by exploit prediction. GitHub Security Advisory data not yet ingested — confidence will rise once GHSA publishes (typical lag: hours to days for open-source ecosystem CVEs; never for infrastructure-only CVEs).

Triggered by: NVD CVSS baseline
Sources: epss, nvd
Elevated
8.8EG
EchelonGraph verdictPlan a fixSerious severity, but no confirmed exploitation yet.
  • High severity, but no confirmed exploitation yet
CISA-KEV: Not listedEPSS PROB: 1%CVSS: 8.8Exploit: Elevated riskExposed: 0

No vendor fix yet — apply a workaround or compensating control (WAF / firewall / segmentation) and watch for a patch.

capsule-proxy is a reverse proxy for Capsule Operator which provides multi-tenancy in Kubernetes. In versions prior to 0.2.1 an attacker with a proper authentication mechanism may use a malicious Connection header to start a privilege escalation attack towards the Kubernetes API Server. This vulnerability allows for an exploit of the cluster-admin Role bound to capsule-proxy. There are no known workarounds for this issue.

CVSS v3
8.8
EG Score
8.8(medium)
EG Risk
56(Track*)
EG Risk 56/100SSVC: Track*

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
Severity88% × 45%
Exploitation40% × 40%
Automatability0% × 15%
Action: Watch closely — could escalate to Attend.
EPSS PROB
1%
EPSS %ILE
71%
KEV
Not listed

Published

February 22, 2022

Last Modified

November 21, 2024

Advisory Details (3)

Auto-updated Aug 25, 2026
Patch available. Sources: github_commit, github.
github Patch Available

Privilege escalation using hop-by-hop Connection header · Advisory · projectcapsule/capsule-proxy · GitHub

https://github.com/clastix/capsule-proxy/security/advisories/GHSA-9cwv-cppx-mqjm
generic

Privilege escalation vulnerability via malicious "Connection" header · Issue #188 · projectcapsule/capsule-proxy · GitHub

https://github.com/clastix/capsule-proxy/issues/188
github_commit

commit efe91f68ebf8 (clastix/capsule-proxy)

Fix landed in clastix/capsule-proxy commit efe91f68ebf8 — awaiting tagged release

https://github.com/clastix/capsule-proxy/commit/efe91f68ebf8a9e3d21491dc57da7b8a746415d8

Affected Packages

(1 across 1 ecosystem)
Go(1)
PackageVulnerable rangeFixed inDependents
github.com/clastix/capsule-proxy—0.2.1—

Weakness Classification(1)

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

Data Freshness Timeline

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

Related CVEs(same CWE)

Frequently asked(5)

What is CVE-2022-23652?
CVE-2022-23652 is a high vulnerability published on February 22, 2022. capsule-proxy is a reverse proxy for Capsule Operator which provides multi-tenancy in Kubernetes. In versions prior to 0.2.1 an attacker with a proper authentication mechanism may use a malicious Connection header to start a privilege escalation attack towards the Kubernetes API Server. This…
When was CVE-2022-23652 disclosed?
CVE-2022-23652 was first published in the National Vulnerability Database on February 22, 2022, with the most recent update on November 21, 2024. EchelonGraph re-ingests CVE updates from NVD on a 2-hour cycle, so this page reflects the latest published state.
Is CVE-2022-23652 actively exploited?
CVE-2022-23652 is not currently on CISA's Known Exploited Vulnerabilities catalog. FIRST EPSS estimates a 1% probability of exploitation in the next 30 days, which ranks it in the top 29.4% of all scored CVEs.
What is the CVSS score of CVE-2022-23652?
CVE-2022-23652 has a CVSS v3 base score of 8.8 (NVD).
How do I remediate CVE-2022-23652?
Patch to the fixed version published by the affected vendor. Where vendor advisories exist for CVE-2022-23652, 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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