CVE-2026-42457

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Source
https://cve.org/CVERecord?id=CVE-2026-42457
Import Source
https://storage.googleapis.com/cve-osv-conversion/osv-output/CVE-2026-42457.json
JSON Data
https://api.osv.dev/v1/vulns/CVE-2026-42457
Aliases
  • GHSA-x7cq-v3h6-426c
Published
2026-05-14T14:48:05Z
Modified
2026-08-12T03:51:43Z
Severity
  • 9.0 (Critical) CVSS_V3 - CVSS:3.1/AV:N/AC:L/PR:L/UI:R/S:C/C:H/I:H/A:H CVSS Calculator
Summary
vCluster Platform: Stored XSS can lead to privilege escalation
Details

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.

Database specific 
{
    "cna_assigner": "GitHub_M",
    "cwe_ids": [
        "CWE-79"
    ],
    "osv_generated_from": "https://github.com/CVEProject/cvelistV5/tree/main/cves/2026/42xxx/CVE-2026-42457.json",
    "unresolved_ranges": [
        {
            "extracted_events": [
                {
                    "introduced": "4.5.0-alpha.0"
                },
                {
                    "fixed": "4.5.5"
                },
                {
                    "introduced": "4.6.0-alpha.1"
                },
                {
                    "fixed": "4.6.2"
                },
                {
                    "introduced": "4.7.0-alpha.0"
                },
                {
                    "fixed": "4.7.1"
                }
            ],
            "source": "AFFECTED_FIELD"
        }
    ]
}
References

Affected packages

Git / github.com/loft-sh/loft

Affected ranges

Type
GIT
Repo
https://github.com/loft-sh/loft
Events
Introduced
0 Unknown introduced commit / All previous commits are affected
Fixed
76e6e9a0a1cc13b7d945c9809860ac3736403164
Database specific
Show details 
{
    "extracted_events": [
        {
            "introduced": "0"
        },
        {
            "fixed": "4.4.3"
        }
    ],
    "source": "AFFECTED_FIELD"
}

Affected versions

v0.*
v0.0.1-beta.1
v0.0.1-beta.10
v0.0.1-beta.11
v0.0.1-beta.12
v0.0.1-beta.13
v0.0.1-beta.14
v0.0.1-beta.15
v0.0.1-beta.16
v0.0.1-beta.2
v0.0.1-beta.24
v0.0.1-beta.25
v0.0.1-beta.26
v0.0.1-beta.27
v0.0.1-beta.28
v0.0.1-beta.29
v0.0.1-beta.3
v0.0.1-beta.30
v0.0.1-beta.31
v0.0.1-beta.32
v0.0.1-beta.33
v0.0.1-beta.34
v0.0.1-beta.35
v0.0.1-beta.36
v0.0.1-beta.37
v0.0.1-beta.38
v0.0.1-beta.39
v0.0.1-beta.4
v0.0.1-beta.40
v0.0.1-beta.5
v0.0.1-beta.6
v0.0.1-beta.7
v0.0.1-beta.8
v0.1.0
v0.1.1
v0.2.0
v0.3.0
v0.3.1
v0.3.2
v0.3.2-beta.0
v0.3.2-beta.1
v0.3.2-beta.3
v0.3.3
v0.3.4
v0.3.5
v0.3.6
v0.3.7
v0.3.8
v0.3.9
v0.4.0
v0.5.0
v0.5.0-beta.1
v0.6.0
v0.6.0-alpha.1
v0.6.1
v0.6.1-beta.0
v0.6.2
v0.6.3
v0.6.4
v0.6.4-beta.0
v0.6.4-beta.1
v1.*
v1.0.0
v1.0.0-beta.0
v1.0.0-beta.1
v1.0.0-beta.2
v1.0.0-beta.3
v1.0.0-beta.4
v1.0.0-beta.5
v1.0.0-beta.6
v1.0.1
v1.0.2
v1.1.0
v1.10.0
v1.10.0-beta.0
v1.10.0-beta.1
v1.10.1
v1.10.2-alpha.0
v1.10.2-beta.0
v1.10.2-beta.1
v1.10.2-beta.2
v1.11.0
v1.11.0-beta.0
v1.11.0-beta.1
v1.11.0-beta.2
v1.11.0-beta.3
v1.11.1
v1.11.1-kubernetes.115
v1.12.0
v1.12.0-alpha.0
v1.12.0-alpha.1
v1.12.0-beta.0
v1.12.0-beta.1
v1.12.0-ie11
v1.12.1
v1.12.1-beta.0
v1.12.1-beta.1
v1.12.1-beta.2
v1.12.1-beta.6
v1.12.1-beta.7
v1.12.2
v1.12.2-ie11
v1.13.0
v1.13.0-alpha.4
v1.13.0-alpha.5
v1.13.1
v1.13.1-beta.0
v1.13.1-beta.1
v1.14.0
v1.14.0-beta.0
v1.15.0
v1.15.0-alpha.1
v1.15.0-beta.0
v1.15.0-beta.1
v1.15.0-beta.2
v1.15.0-beta.3
v1.15.0-rc.1
v1.15.0-rc.2
v1.15.1-beta.0
v1.2.0
v1.2.0-beta.0
v1.2.0-beta.1
v1.2.1
v1.2.2
v1.3.0
v1.3.0-beta.0
v1.3.0-beta.1
v1.3.0-beta.2
v1.3.0-beta.3
v1.3.0-beta.4
v1.3.0-beta.5
v1.3.0-beta.6
v1.3.1
v1.4.0
v1.4.0-beta.2
v1.4.1
v1.4.1-beta.0
v1.4.1-beta.1
v1.5.0
v1.5.0-beta.0
v1.5.1
v1.5.2
v1.5.2-beta.0
v1.5.2-beta.1
v1.5.3
v1.5.4
v1.5.5
v1.6.0
v1.6.0-beta.0
v1.6.1
v1.6.2
v1.7.0
v1.7.0-beta.0
v1.7.0-beta.1
v1.7.1
v1.7.1-beta.0
v1.7.2
v1.7.2-beta.0
v1.8.0
v1.8.0-beta.0
v1.8.1
v1.8.2
v1.8.2-beta.0
v1.8.2-beta.1
v1.9.0
v1.9.0-beta.0
v1.9.0-beta.1
v1.9.0-beta.2
v1.9.1
v1.9.1-beta.0
v1.9.1-beta.1
v1.9.1-kubernetes.115
v1.9.2
v1.9.2-kubernetes.115
v1.9.2-kubernetes.115.1
v1.9.3
v1.9.3-beta.0
v1.9.3-beta.1
v1.9.3-kubernetes.115
v2.*
v2.0.0
v2.0.0-alpha.0
v2.0.0-alpha.1
v2.0.0-alpha.10
v2.0.0-alpha.11
v2.0.0-alpha.12
v2.0.0-alpha.13
v2.0.0-alpha.2
v2.0.0-alpha.4
v2.0.0-alpha.5
v2.0.0-alpha.6
v2.0.0-alpha.7
v2.0.0-alpha.8
v2.0.0-alpha.9
v2.0.0-beta.0
v2.0.0-beta.1
v2.0.0-beta.2
v2.0.0-rc.0
v2.0.0-rc.1
v2.0.1
v2.0.1-beta.0
v3.*
v3.4.1
v3.4.1-beta.0
v3.4.2
v3.4.2-beta.0
v3.4.2-beta.1
v3.4.3
v3.4.3-beta.0
v3.4.3-beta.1
v3.4.3-beta.2
v3.4.4
v3.4.4-beta.3
v3.4.4-beta.4
v3.4.4-beta.5
v3.4.4-beta.6
v3.4.5
v3.4.6
v3.4.6-alpha.1
v3.4.6-beta.0
v3.4.6-rc.1
v3.5.0-alpha.0
v3.5.0-alpha.1
v3.5.0-alpha.2
v3.5.0-alpha.3
v3.5.0-alpha.4
v3.5.0-alpha.5
v4.*
v4.0.0-alpha.0
v4.0.0-alpha.1
v4.0.0-alpha.2
v4.0.0-alpha.3
v4.0.0-alpha.4
v4.0.0-alpha.5
v4.0.0-alpha.6
v4.4.3-rc.2

Database specific

source 
"https://storage.googleapis.com/cve-osv-conversion/osv-output/CVE-2026-42457.json"