CVE-2026-43940

{"id": "CVE-2026-43940", "cveTags": [], "metrics": {"cvssMetricV31": [{"type": "Secondary", "source": "security-advisories@github.com", "cvssData": {"scope": "UNCHANGED", "version": "3.1", "baseScore": 8.4, "attackVector": "LOCAL", "baseSeverity": "HIGH", "vectorString": "CVSS:3.1/AV:L/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H", "integrityImpact": "HIGH", "userInteraction": "NONE", "attackComplexity": "LOW", "availabilityImpact": "HIGH", "privilegesRequired": "NONE", "confidentialityImpact": "HIGH"}, "impactScore": 5.9, "exploitabilityScore": 2.5}]}, "published": "2026-05-08T04:16:23.023", "references": [{"url": "https://github.com/electerm/electerm/releases/tag/v3.7.16", "tags": ["Release Notes"], "source": "security-advisories@github.com"}, {"url": "https://github.com/electerm/electerm/security/advisories/GHSA-f77v-9vpc-6pjm", "tags": ["Vendor Advisory", "Mitigation"], "source": "security-advisories@github.com"}], "vulnStatus": "Analyzed", "weaknesses": [{"type": "Primary", "source": "security-advisories@github.com", "description": [{"lang": "en", "value": "CWE-22"}, {"lang": "en", "value": "CWE-829"}]}], "descriptions": [{"lang": "en", "value": "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\u2011supplied 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\u2011site scripting flaw in the built\u2011in webview) can abuse a path traversal (../) to load and execute an arbitrary JavaScript file anywhere on the victim\u2019s 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."}], "lastModified": "2026-05-08T19:17:53.237", "configurations": [{"nodes": [{"negate": false, "cpeMatch": [{"criteria": "cpe:2.3:a:electerm_project:electerm:*:*:*:*:*:*:*:*", "vulnerable": true, "matchCriteriaId": "6E0CF034-D768-4369-9CD6-B59CD34B03CD", "versionEndExcluding": "3.7.16"}], "operator": "OR"}]}], "sourceIdentifier": "security-advisories@github.com"}