Security Digest · Vulnerability record
CVE-2026-45353: Electerm Local code through electerm's single-instance socket
electerm is an open-sourced terminal/ssh/sftp/telnet/serialport/RDP/VNC/Spice/ftp client.
CVSS 9.3 Critical EPSS 0.2% · p6
Should you act?
Critical, preconditions apply
Severe if exploited, but exploitation needs conditions that may not apply to you. This signal is computed from CISA KEV, EPSS and CVSS data; it is not an editorial verdict.
- 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 0.2%, percentile 6: FIRST’s model estimates a 0.2% chance of exploitation activity in the next 30 days, higher than 6% of all scored CVEs (low). EPSS is a probability, not a verdict.
- Needs local access needed. Lower urgency for most teams unless an attacker could already run code on the machine.
- Only applies if your dependency tree includes
electerm(npm) >= 3.0.6, <= 3.8.8, fixed in 3.9.0. Check your lockfile, including transitive dependencies.
What it is
electerm is an open-sourced terminal/ssh/sftp/telnet/serialport/RDP/VNC/Spice/ftp client. From 3.0.6 to 3.8.8, This vulnerability is fixed in 3.9.0.
From the GitHub advisory
Impact Local code execution without UI interaction: any same-user process can send a JSON payload to electerm's single-instance socket/pipe, causing the app to create tabs and potentially spawn attacker-controlled local processes. Affects electerm single-instance installs on the machine.
Patches
- https://github.com/electerm/electerm/commit/0599e67069b00e376a2e962649aaad6096e63507
Workarounds
- Do not run unsafe command
Weakness type: CWE-94, CWE-732, CWE-940.
Product: electerm (npm) · Assigned by: GitHub_M · Published: 2026-05-28
Affected and fixed versions
| Ecosystem | Package | Vulnerable | First fixed |
|---|---|---|---|
| npm | electerm | >= 3.0.6, <= 3.8.8 | 3.9.0 |
| Vendor | Product | Affected versions (per CVE record) |
|---|---|---|
| electerm | electerm | >= 3.0.6, < 3.89.0 |
Severity scores
| Scored by | CVSS | Score | Vector |
|---|---|---|---|
| GitHub_M | 4.0 | 9.3 Critical | CVSS:4.0/AV:L/AC:L/AT:N/PR:L/UI:N/VC:H/VI:H/VA:H/SC:H/SI:H/SA:H |
| GitHub | 4.0 | 9.3 | CVSS:4.0/AV:L/AC:L/AT:N/PR:L/UI:N/VC:H/VI:H/VA:H/SC:H/SI:H/SA:H |
- Attack vector: local access needed
- Attack complexity: low
- Attack requirements: none
- Privileges required: low (any account)
- User interaction: none
CVSS measures how bad a flaw is if exploited, not how likely exploitation is. Read it next to the exploitation data below.
Exploitation and urgency
- 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): 0.17% probability of exploitation activity in the next 30 days; percentile 6.
Timeline
- — GitHub-reviewed advisory GHSA-7p5m-v798-f8vv published (critical)
- — CVE record last updated
- — CVE record published by GitHub_M
Sources and references
Original sources first. Version and fix details should always be confirmed against the vendor or project advisory.
Vulnerability records
- GitHub Advisory GHSA-7p5m-v798-f8vv github.com
- CVE.org record CVE-2026-45353 cve.org
- NVD entry CVE-2026-45353 nvd.nist.gov
Other references from the CVE record and advisory
- github.com github.com
- github.com github.com