---
title: "CVE-2026-45058: Electerm: Importing unsafe bookmark data could lead to unsafe operation when clicking local type bookmark"
url: https://erroneo.us/security/cve/CVE-2026-45058/
description: "CVE-2026-45058 (electerm (npm)): electerm is an open-sourced terminal/ssh/sftp/telnet/serialport/RDP/VNC/Spice/ftp client. In 3.8.8 and earlier, there is…"
type: vulnerability-record
section: "Security Digest"
date_published: 2026-05-28
date_modified: 2026-06-09
publisher: erroneo.us
author: erroneo.us Security Desk
cve: "CVE-2026-45058"
kev: false
cvss: 9.4
epss: 0.00298
license: All rights reserved. Quote with attribution and a link.
---

# CVE-2026-45058: Electerm: Importing unsafe bookmark data could lead to unsafe operation when clicking local type bookmark

**Signal:** Critical and remotely reachable. No known exploitation yet, but it is network-reachable without credentials. (Computed from CISA KEV, EPSS and CVSS; not an editorial verdict.)

## Should you act?

- No confirmed exploitation. It is not in CISA’s KEV catalog and CISA’s SSVC assessment records no known exploitation. That can change quickly after a public write-up; re-check if you are affected.
- EPSS 0.3% , percentile 21: FIRST’s model estimates a 0.3% chance of exploitation activity in the next 30 days, higher than 21% of all scored CVEs (low). EPSS is a probability, not a verdict.
- Only applies if your dependency tree includes electerm (npm) <= 3.8.8, no fixed version listed . Check your lockfile, including transitive dependencies.

## What it is

electerm is an open-sourced terminal/ssh/sftp/telnet/serialport/RDP/VNC/Spice/ftp client. In 3.8.8 and earlier, there is persistent local-pty code execution via imported bookmarks or compromised sync targets. Affects users who import bookmark JSON files or who have electerm sync configured (gist/WebDAV). The attacker can inject exec fields or global config to cause remote code to run when a bookmark is opened or when sync is applied.

## Affected packages

- npm `electerm` <= 3.8.8 → fixed: none listed

## Affected products (CVE record)

- electerm electerm: <= 3.8.8

## Severity

- GitHub_M CVSS 4.0: 9.4 `CVSS:4.0/AV:N/AC:L/AT:N/PR:N/UI:A/VC:H/VI:H/VA:H/SC:H/SI:H/SA:H`
- GitHub CVSS 4.0: 9.4 `CVSS:4.0/AV:N/AC:L/AT:N/PR:N/UI:A/VC:H/VI:H/VA:H/SC:H/SI:H/SA:H`

## Exploitation

- CISA KEV: not listed (no confirmed in-the-wild exploitation known to CISA).
- CISA SSVC assessment: exploitation none , automatable no , technical impact total .
- FIRST EPSS (model of 2026-10-21): 0.30% probability of exploitation activity in the next 30 days; percentile 21.

## Sources

- [GitHub Advisory GHSA-jgg9-rw32-44pj](https://github.com/advisories/GHSA-jgg9-rw32-44pj)
- [CVE.org record CVE-2026-45058](https://www.cve.org/CVERecord?id=CVE-2026-45058)
- [NVD entry CVE-2026-45058](https://nvd.nist.gov/vuln/detail/CVE-2026-45058)
- [github.com](https://github.com/electerm/electerm/security/advisories/GHSA-jgg9-rw32-44pj)

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Source page: https://erroneo.us/security/cve/CVE-2026-45058/ · Security Digest: https://erroneo.us/security/ · More: https://erroneo.us/llms.txt