Vulnerability in Electerm
CVE-2026-86711
electerm before 5.3.15 exposes 40+ main-process functions through an unvalidated Electron IPC handler with no function-name allowlist or sender validation. Renderer-side script execution can invoke openFileWithEditor and other functions with arbitrary arguments to execute system commands in the main process.
Published · last modified .
CVSS v3 metric
CVSS v3 base score 7.4 (High). Vector: CVSS:3.1/AV:L/AC:H/PR:N/UI:N/S:U/C:H/I:H/A:H.
EPSS exploit prediction
EPSS: 0.002 (11.3th percentile), scored .
Very low probability of exploitation in the next 30 days; routine patching cadence is appropriate. 11th percentile — 11.3% of CVEs in the catalogue have a lower EPSS than this one. How to read EPSS.
EPSS over last 30 days · oldest: 0.001 · newest: 0.002 · change: +0.001
Affected products
Weakness classification (CWE)
References
- github.com/electerm/electerm/security/advisories/GHSA-qc8j-6jr2-qr32 (vendor-advisory)
- github.com/electerm/electerm/issues/4509 (issue-tracking)
- github.com/electerm/electerm/commit/b1f880534b8ae066c5d25bbf291ca7437e052750 (patch)
- github.com/electerm/electerm/releases/tag/v5.3.15 (release-notes)
- github.com/electerm/electerm/blob/v5.3.5/src/app/lib/ipc.js (technical-description)
- github.com/electerm/electerm (product)
- www.vulncheck.com/advisories/electerm-before-5.3.15-arbitrary-command-execution… (third-party-advisory)
Frequently asked questions
- What is CVE-2026-86711?
- CVE-2026-86711 is a high-severity vulnerability in Electerm, classified under CWE-749. CVSS score: 7.4/10. Published 2026-09-08.
- How severe is CVE-2026-86711?
- High severity. CVSS v3 base score is 7.4 out of 10.