CVE-2026-65834

MEDIUMPre-NVD 6.86.8—
EchelonGraph scoreMEDIUM confidence

This medium-severity CVE scores 6.8 under a secondary CVSS source (NVD's own analysis pending). EPSS exploit probability: 0.5% (38th percentile of EPSS-scored CVEs). 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, secondary
Elevated
6.8EG
EchelonGraph verdictMonitorLow exploitation likelihood right now — keep watching.
  • Lower severity and no public exploit yet
CISA-KEV: Not listedEPSS PROB: 0.5%CVSS: 6.8Exploit: Elevated riskExposed services: Not assessed

A fix is available — apply it.

Capsule is a multi-tenancy and policy-based framework for Kubernetes. Prior to 0.13.8, CapsuleConfiguration.Spec.NodeMetadata.ForbiddenLabels.Regex and CapsuleConfiguration.Spec.NodeMetadata.ForbiddenAnnotations.Regex were not validated by the configuration admission webhook, allowing a Cluster Admin to store a malformed regex that later reached regexp.MustCompile in pkg/api/forbidden_list.go through internal/webhook/node/user_metadata.go and crashed the node admission webhook on Node create, update, or patch requests. This issue is fixed in version 0.13.8.

CVSS v3
6.8
EG Score
6.8MEDIUMmedium confidence
EG Risk
47
EG Risk 47/100CISA 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
Severity68% × 45%
Exploitation40% × 40%
Automatability0% × 15%
CISA SSVC: Track at low or medium mission impact; Track* at high (mission-essential systems).
Action: A fix is available. Apply it within your standard update timelines.
EPSS PROB
0.5%
EPSS %ILE
38th
KEV
Not listed

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

A fix is available. Apply it within your standard update timelines.

Exploitation public PoC (CISA Vulnrichment) · Automatable no (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

July 30, 2026

Last Modified

July 31, 2026

Advisory Details (2)

Auto-updated Jul 30, 2026
🔬 Proof of concept available. Patch available. Sources: github, github_release.
github_release Patch Available

v0.13.8

Patch available: projectcapsule/capsule v0.13.8

https://github.com/projectcapsule/capsule/releases/tag/v0.13.8
github Patch Available🟡 PoC Available

CapsuleConfiguration NodeMetadata regex fields lack webhook validation, allowing MustCompile panic on all Node admission requests · Advisory · projectcapsule/capsule · GitHub

https://github.com/projectcapsule/capsule/security/advisories/GHSA-68cj-mvg9-rgm2

Vendor Advisories for CVE-2026-65834(1)

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

Affected Packages

(1 across 1 ecosystem)
Go(1)
PackageVulnerable rangeFix by version rangeDependents
github.com/projectcapsule/capsule—
  • every version up to 0.13.8: fixed in 0.13.8
—

Weakness Classification(2)

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

Data Freshness Timeline

(refreshed 10× in last 7d / 39× 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 101 total refreshes for this CVE.

  1. 2026-10-04 23:22 UTCEPSS rescore
  2. 2026-10-04 06:36 UTCEG score recompute
  3. 2026-10-03 14:26 UTCEPSS rescore
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  1. 2026-09-14 09:26 UTCEG score recompute
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  4. 2026-09-11 14:53 UTCEPSS rescore
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  28. 2026-08-26 14:47 UTCEPSS rescore
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  35. 2026-08-21 23:49 UTCEPSS rescore
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  37. 2026-08-20 22:56 UTCEPSS rescore
  38. 2026-08-19 21:36 UTCEG score recompute
  39. 2026-08-19 17:04 UTCEPSS rescore
  40. 2026-08-18 20:39 UTCEG score recompute
  41. 2026-08-18 13:48 UTCEPSS rescore
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  44. 2026-08-16 19:37 UTCEG score recompute
  45. 2026-08-16 14:56 UTCEPSS rescore
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  47. 2026-08-15 01:30 UTCEPSS rescore
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  59. 2026-08-06 13:47 UTCEPSS rescore
  60. 2026-08-05 19:17 UTCEPSS rescore
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  62. 2026-08-05 14:41 UTCEG score recompute
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  65. 2026-08-04 10:39 UTCEPSS rescore
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  67. 2026-08-03 10:36 UTCEPSS rescore
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  72. 2026-07-31 12:18 UTCEG score recompute
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  74. 2026-07-30 20:32 UTCEG score recompute
  75. 2026-07-30 20:07 UTCEG score recompute

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Frequently asked(5)

What is CVE-2026-65834?
CVE-2026-65834 is a medium vulnerability published on July 30, 2026. Capsule is a multi-tenancy and policy-based framework for Kubernetes. Prior to 0.13.8, CapsuleConfiguration.Spec.NodeMetadata.ForbiddenLabels.Regex and CapsuleConfiguration.Spec.NodeMetadata.ForbiddenAnnotations.Regex were not validated by the configuration admission webhook, allowing a Cluster…
When was CVE-2026-65834 disclosed?
CVE-2026-65834 was first published on July 30, 2026, with the most recent update on July 31, 2026. EchelonGraph re-ingests CVE updates from NVD on a 2-hour cycle, so this page reflects the latest published state.
Is CVE-2026-65834 actively exploited?
CVE-2026-65834 is not currently on CISA's Known Exploited Vulnerabilities catalog. FIRST EPSS estimates a 0.5% probability of exploitation in the next 30 days (38th percentile of EPSS-scored CVEs).
What is the CVSS score of CVE-2026-65834?
CVE-2026-65834 has a CVSS base score of 6.8 (a secondary CVSS source that NVD displays; NVD's own analysis pending).
How do I remediate CVE-2026-65834?
A fix for CVE-2026-65834 is available: update to the fixed version the vendor names in its advisory. The vendor advisories EchelonGraph has for CVE-2026-65834 are linked in the Vendor Advisories panel on this page.

Dependency Blast Radius

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