CVE-2026-43940

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Source
https://cve.org/CVERecord?id=CVE-2026-43940
Import Source
https://storage.googleapis.com/cve-osv-conversion/osv-output/CVE-2026-43940.json
JSON Data
https://api.osv.dev/v1/vulns/CVE-2026-43940
Aliases
Published
2026-05-08T02:58:05.646Z
Modified
2026-08-05T03:46:52.839191056Z
Severity
  • 8.4 (High) CVSS_V3 - CVSS:3.1/AV:L/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H CVSS Calculator
Summary
electerm: Path traversal in electerm runWidget leads to arbitrary code execution
Details

electerm is an open-sourced terminal/ssh/sftp/telnet/serialport/RDP/VNC/Spice/ftp client. Prior to version 3.7.16, the runWidget function in src/app/widgets/load-widget.js constructs a file path by directly concatenating user‑supplied widget identifiers without any sanitisation. Because runWidget is exposed to the renderer process via an asynchronous IPC handler with no input validation, an attacker who achieves JavaScript execution inside the renderer (for example, through a malicious plugin or a cross‑site scripting flaw in the built‑in webview) can abuse a path traversal (../) to load and execute an arbitrary JavaScript file anywhere on the victim’s filesystem. This gives the attacker local code execution with the full privileges of the electerm process, leading to complete system compromise. This issue has been patched in version 3.7.16.

Database specific 
{
    "cwe_ids": [
        "CWE-22",
        "CWE-829"
    ],
    "cna_assigner": "GitHub_M",
    "osv_generated_from": "https://github.com/CVEProject/cvelistV5/tree/main/cves/2026/43xxx/CVE-2026-43940.json",
    "unresolved_ranges": [
        {
            "source": "AFFECTED_FIELD",
            "extracted_events": [
                {
                    "fixed": "3.7.16"
                }
            ]
        }
    ]
}
References

Affected packages

Git / github.com/electerm/electerm

Affected ranges

Type
GIT
Repo
https://github.com/electerm/electerm
Events
Introduced
0 Unknown introduced commit / All previous commits are affected
Fixed
ff6621cc5394b46125e5fa453dc91e45addac692
Database specific 
{
    "source": "REFERENCES"
}

Affected versions

1.*
1.10.0
1.13.4
2.*
2.4.35
v0.*
v0.0.1
v0.1.0
v0.10.0
v0.11.0
v0.11.1
v0.12.0
v0.13.1
v0.13.2
v0.13.3
v0.14.1
v0.14.2
v0.14.3
v0.14.4
v0.14.8
v0.15.0
v0.15.10
v0.15.3
v0.15.6
v0.16.0
v0.16.1
v0.16.22
v0.16.24
v0.16.25
v0.16.26
v0.16.27
v0.16.28
v0.16.29
v0.16.30
v0.17.0
v0.17.3
v0.18.0
v0.18.4
v0.18.5
v0.18.6
v0.18.7
v0.19.0
v0.19.1
v0.19.12
v0.19.6
v0.19.8
v0.2.0
v0.2.1
v0.2.3
v0.20.0
v0.20.1
v0.20.6
v0.20.9
v0.21.10
v0.21.13
v0.21.14
v0.21.4
v0.21.7
v0.22.0
v0.22.1
v0.22.11
v0.22.14
v0.22.17
v0.22.18
v0.22.2
v0.22.21
v0.22.23
v0.22.24
v0.22.3
v0.22.4
v0.22.6
v0.22.9
v0.23.10
v0.23.11
v0.23.12
v0.23.16
v0.23.18
v0.23.20
v0.23.21
v0.23.24
v0.23.29
v0.23.32
v0.23.41
v0.23.5
v0.23.8
v0.23.9
v0.24.1
v0.24.11
v0.24.16
v0.24.20
v0.24.23
v0.24.25
v0.24.26
v0.24.28
v0.24.3
v0.24.32
v0.24.33
v0.24.35
v0.24.36
v0.24.39
v0.24.4
v0.24.45
v0.24.5
v0.24.9
v0.25.0
v0.25.1
v0.25.18
v0.25.21
v0.25.39
v0.25.41
v0.25.48
v0.25.56
v0.25.60
v0.25.61
v0.25.65
v0.25.66
v0.25.9
v0.26.10
v0.26.12
v0.26.14
v0.26.18
v0.26.2
v0.26.20
v0.26.21
v0.26.22
v0.26.23
v0.26.24
v0.26.27
v0.26.31
v0.26.38
v0.26.40
v0.26.43
v0.26.44
v0.26.46
v0.26.47
v0.26.51
v0.26.54
v0.26.55
v0.26.57
v0.26.59
v0.26.62
v0.26.63
v0.26.67
v0.26.71
v0.26.73
v0.26.75
v0.26.76
v0.26.9
v0.27.0
v0.27.100
v0.27.105
v0.27.11
v0.27.12
v0.27.20
v0.27.22
v0.27.25
v0.27.27
v0.27.34
v0.27.37
v0.27.44
v0.27.48
v0.27.5
v0.27.50
v0.27.52
v0.27.53
v0.27.57
v0.27.60
v0.27.63
v0.27.65
v0.27.67
v0.27.68
v0.27.72
v0.27.74
v0.27.78
v0.27.79
v0.27.80
v0.27.82
v0.27.83
v0.27.84
v0.27.89
v0.27.97
v0.3.0
v0.3.2
v0.3.3
v0.4.0
v0.5.0
v0.6.0
v0.6.1
v0.7.0
v0.8.0
v0.8.5
v0.9.0
v0.9.5
v1.*
v1.0.0
v1.0.13
v1.0.18
v1.0.19
v1.0.21
v1.0.23
v1.0.24
v1.0.27
v1.0.28
v1.0.31
v1.0.33
v1.0.7
v1.10.13
v1.10.14
v1.10.31
v1.10.35
v1.10.39
v1.100.18
v1.100.20
v1.100.30
v1.100.46
v1.100.50
v1.100.56
v1.100.60
v1.100.8
v1.101.10
v1.101.16
v1.101.20
v1.11.0
v1.11.1
v1.11.11
v1.11.12
v1.11.13
v1.11.16
v1.11.5
v1.11.6
v1.11.8
v1.12.0
v1.12.1
v1.12.15
v1.12.19
v1.12.2
v1.12.21
v1.12.24
v1.12.6
v1.12.7
v1.12.9
v1.13.1
v1.13.3
v1.14.0
v1.15.3
v1.16.1
v1.16.11
v1.16.21
v1.16.3
v1.16.5
v1.17.15
v1.17.16
v1.17.19
v1.17.21
v1.17.26
v1.17.3
v1.18.0
v1.18.1
v1.18.5
v1.19.0
v1.19.5
v1.2.2
v1.20.10
v1.20.4
v1.20.6
v1.21.14
v1.21.18
v1.21.20
v1.21.34
v1.21.40
v1.21.48
v1.21.57
v1.21.73
v1.21.74
v1.21.88
v1.21.9
v1.21.91
v1.21.93
v1.22.1
v1.22.20
v1.22.24
v1.22.27
v1.22.30
v1.22.33
v1.22.8
v1.23.15
v1.23.2
v1.23.20
v1.23.22
v1.23.28
v1.23.3
v1.23.32
v1.23.4
v1.23.6
v1.23.8
v1.24.13
v1.25.10
v1.25.12
v1.25.14
v1.25.16
v1.25.20
v1.25.22
v1.25.30
v1.25.40
v1.25.41
v1.25.50
v1.25.6
v1.26.0
v1.26.1
v1.26.2
v1.27.19
v1.27.20
v1.27.30
v1.27.5
v1.28.0
v1.28.1
v1.28.3
v1.28.4
v1.29.2
v1.29.4
v1.29.5
v1.3.0
v1.3.1
v1.3.10
v1.3.12
v1.3.18
v1.3.2
v1.3.21
v1.3.25
v1.3.28
v1.3.31
v1.3.34
v1.3.36
v1.3.38
v1.3.4
v1.3.42
v1.3.45
v1.3.46
v1.3.49
v1.3.5
v1.3.55
v1.3.7
v1.3.8
v1.30.9
v1.31.1
v1.32.28
v1.32.38
v1.32.46
v1.32.6
v1.33.0
v1.33.26
v1.33.36
v1.33.6
v1.34.0
v1.34.10
v1.34.20
v1.34.26
v1.34.30
v1.34.38
v1.34.39
v1.34.46
v1.34.48
v1.34.58
v1.34.6
v1.34.68
v1.35.0
v1.35.6
v1.36.1
v1.37.1
v1.37.106
v1.37.110
v1.37.121
v1.37.126
v1.37.16
v1.37.20
v1.37.36
v1.37.38
v1.37.46
v1.37.58
v1.37.6
v1.37.60
v1.37.66
v1.37.68
v1.37.80
v1.37.88
v1.37.92
v1.37.93
v1.37.96
v1.38.11
v1.38.19
v1.38.30
v1.38.41
v1.38.42
v1.38.43
v1.38.50
v1.38.60
v1.38.65
v1.38.70
v1.38.8
v1.38.80
v1.38.81
v1.38.86
v1.39.103
v1.39.109
v1.39.119
v1.39.18
v1.39.2
v1.39.31
v1.39.35
v1.39.46
v1.39.47
v1.39.5
v1.39.56
v1.39.68
v1.39.76
v1.39.88
v1.39.99
v1.40.16
v1.40.18
v1.40.20
v1.40.6
v1.5.0
v1.5.13
v1.5.15
v1.5.18
v1.5.19
v1.5.4
v1.50.21
v1.50.40
v1.50.46
v1.50.59
v1.50.65
v1.50.66
v1.51.0
v1.51.18
v1.51.3
v1.51.8
v1.60.16
v1.60.29
v1.60.32
v1.60.36
v1.60.48
v1.60.50
v1.60.56
v1.60.6
v1.7.10
v1.7.17
v1.7.18
v1.70.0
v1.70.6
v1.72.18
v1.72.26
v1.72.36
v1.72.48
v1.72.6
v1.80.18
v1.80.2
v1.80.3
v1.80.5
v1.80.6
v1.9.12
v1.9.14
v1.9.19
v1.9.24
v1.9.27
v1.9.31
v1.9.7
v1.90.6
v1.90.8
v1.91.1
v1.91.16
v1.91.8
v2.*
v2.1.16
v2.1.26
v2.1.8
v2.10.26
v2.10.6
v2.11.16
v2.11.6
v2.12.0
v2.13.0
v2.13.6
v2.15.8
v2.16.9
v2.17.16
v2.17.8
v2.2.0
v2.3.100
v2.3.103
v2.3.113
v2.3.118
v2.3.126
v2.3.136
v2.3.151
v2.3.166
v2.3.176
v2.3.18
v2.3.181
v2.3.190
v2.3.191
v2.3.198
v2.3.30
v2.3.36
v2.3.48
v2.3.58
v2.3.6
v2.3.65
v2.3.75
v2.3.85
v2.4.28
v2.4.38
v2.5.16
v2.5.6
v2.5.9
v2.6.0
v2.7.8
v2.8.16
v2.8.6
v3.*
v3.0.18
v3.0.6
v3.1.16
v3.1.26
v3.1.6
v3.2.0
v3.3.8
v3.5.6
v3.6.16
v3.6.6
v3.7.9

Database specific

source 
"https://storage.googleapis.com/cve-osv-conversion/osv-output/CVE-2026-43940.json"