VulnSocial

CVE-2026-42457Disclosure

LOWCVSS 9.0 · CRITICAL

Signal is active with 1 mentions in latest observed window

Immediate actions

  • Track advisory updates for patch or workaround availability

Recommended action window: Monitor and triage in normal cycle

NVD description

vCluster Platform provides a Kubernetes platform for managing virtual clusters, multi-tenancy, and cluster sharing. Prior to 4.4.3, 4.5.5, 4.6.2, 4.7.1, and 4.8.0, there is a Stored XSS attack vulnerability via the name field of a templateRef. This can lead to the execution of arbitrary external scripts within the platform's browser context. In the worst case, a malicious user could potentially create a new Global-Admin user, bypassing other security restrictions. The attacker needs the ability to create namespaces. This vulnerability is fixed in 4.4.3, 4.5.5, 4.6.2, 4.7.1, and 4.8.0.

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0.0/ 10 priority

Sources & remediation

Other references
Weakness type (CWE)
CWE-79

Priority

LOW

Exploitation

NONE

PoC

NONE

Patch

NONE

Momentum

NONE

Threat summary

  • 1 mentions across 1 observed day

What's happening

  • Technical details provided in 1 signal
  • Disclosure: 1 classified signal
  • 1 total mentions across 1 day

Deep dive

Activity timeline1 mentions / 1d
00111Mentions · 2026-05-14: 1Technical Details · 2026-05-14: 105-14
Signal classification1 categories
Disclosure
1100.0%
Referenced assets1 URL
By indicator
Full discourse1 post
  • Kaitan ID Security@KaitanSecurity
    Disclosure

    🚨 CRITICAL — CVE-2026-42457 vCluster Platform provides a Kubernetes platform for managing virtual clusters, multi-tenancy, and cluster sharing. Pri… CVSS 9.0 🔴 No patch yet Full analysis → https://sec.kaitan.id/cves/CVE-2026-42457 #Kubernetes #CyberSecurity #InfoSec

    Post summary

    A critical vulnerability (CVE-2026-42457) affecting vCluster Platform is announced with a CVSS score of 9.0 and no patch available, but no exploit or active exploitation details are present.

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    90 followersView on X

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