How severe is CVE-2026-43944?

No CVSS score has been assigned to CVE-2026-43944 yet. Review the advisory details and affected package list to assess your exposure.

Which packages are affected by CVE-2026-43944?

CVE-2026-43944 affects the following packages: electerm (npm). Ecosystems affected: npm.

How do I fix CVE-2026-43944?

Update electerm to 3.8.8 or later, then make sure no transitive (indirect) dependency still pins the vulnerable range — O3 confirms CVE-2026-43944 is resolved across your whole dependency graph.

How do I detect CVE-2026-43944 in my npm dependencies?

Scan your dependency tree (package-lock.json, pnpm-lock.yaml, requirements.txt, go.sum, etc.) for electerm, including transitive dependencies — a direct dependency you never call can still pull in a vulnerable version.

How do I mitigate CVE-2026-43944 if there is no patch (or I can't update yet)?

Stop passing untrusted input into the interpreter or shell: call the affected binary with an argument array rather than a composed command string, reject anything outside a strict allowlist of expected values, and run the component under an account that cannot reach beyond the work it legitimately does.

Is CVE-2026-43944 actively exploited in the wild?

No public exploit code has been indexed for CVE-2026-43944 yet. This does not mean the vulnerability cannot be exploited — absence of public exploits does not imply safety. Apply the recommended fix and use O3 Security to monitor your exposure.

What is the EPSS score for CVE-2026-43944?

CVE-2026-43944 has an EPSS (Exploit Prediction Scoring System) score of 0.4%, placing it in the 30th percentile of all CVEs. EPSS is maintained by FIRST.org and estimates the probability that a vulnerability will be exploited in the wild within the next 30 days. This score indicates relatively lower exploitation probability, though the CVSS severity should still guide your patching priority.

What type of vulnerability is CVE-2026-43944?

CVE-2026-43944 is classified as Improper Input Validation (CWE-20), Code Injection (CWE-94), CWE-829 (CWE-829). These weakness types describe the underlying flaw category, which helps determine the potential impact and the right class of mitigation. This is a high-impact weakness class that often enables remote code execution or data exposure.

When was CVE-2026-43944 published, and has it been updated?

CVE-2026-43944 was published on May 8, 2026 and was last updated on October 28, 2026. Advisory data evolves as severity scores, affected ranges, and exploit intelligence are revised — always check the latest version of the advisory before acting.

📦 npm

Not in CISA KEV

CVE-2026-43944 — electerm

Fix: electerm/electerm@0599e67

CVE-2026-43944 is a Improper Input Validation vulnerability in electerm. A fix is available for electerm — see the affected versions and patch details below.

electerm: dangerous code can be run through links or command line

Also known asGHSA-mpm8-cx2p-626q

Published

May 8, 2026

Updated

Oct 28, 2026

Affected

1 pkg

Patched

1 / 1

Exploits

None indexed

Exploitation data as of Nov 10, 2026 · OSV.dev, NVD, FIRST.org (EPSS)

Exploitation Status

No confirmed exploitation observed yet

A successful exploit gives an attacker total control of the affected component, not partial access.
CISA’s own triage has not observed active exploitation or public proof-of-concept code for this CVE as of its last assessment.

Exploitation and automatability from CISA’s SSVC triage for CVE-2026-43944.

EPSS Exploitation Probability

via FIRST.org ↗

0.4%probability of exploitation in next 30 days

Lower Risk0.00%

Lower risk than most CVEs30th percentile — riskier than 30% of all scored CVEsHighest risk

Probability of exploitation in the next 30 days, from FIRST.org EPSS.

Real-World Exposure

1 pkg affected

How broadly this vulnerability is actually deployed: weekly install volume shows current usage, and reverse-dependency count shows how many other packages break if it stays unpatched.

0other npm packages depend on this — each one inherits the vulnerability until it's patched upstream

electermnpm

2Kdownloads / week

Description

Impact

Arbitrary local code execution via deep links, CLI --opts, or crafted shortcuts. Affected users: electerm installs that accept protocol URLs or CLI options (affected versions listed in the original report). Exploit requires clicking a crafted electerm://... link or opening a crafted shortcut/command that launches electerm with attacker-controlled opts.

Patches

Fixed in version > 3.8.8

commits:

Workarounds

Disable or unregister electerm protocol handlers (Deep Link settings) and avoid clicking electerm:// links.
Do not run electerm with untrusted --opts arguments or open .lnk / .desktop files from untrusted sources.
Restrict which users can launch electerm on shared machines and avoid leaving electerm installed in locations reachable by other users.
As a temporary measure, run electerm in a confined account or sandbox (non-admin user) to reduce impact.

References

Report / credit: https://github.com/Curly-Haired-Baboon
Electerm releases: https://github.com/electerm/electerm/releases

Affected Packages

1 total 1 fixed

Ecosystem	Package	Vulnerable range	Fix
📦npm	`electerm`	≥ 3.0.6&&< 3.8.8	3.8.8`npm install electerm@3.8.8`

Affected Products

1 product · 1 configurations

Application

electermelecterm_project

≥ 3.0.6 && < 3.8.15

range

Detection & mitigation playbook

Open-source dependency

Detect
Scan your dependency tree (package-lock.json, pnpm-lock.yaml, requirements.txt, go.sum, etc.) for electerm, including transitive dependencies — a direct dependency you never call can still pull in a vulnerable version.
Fix
Update electerm to 3.8.8 or later, then make sure no transitive (indirect) dependency still pins the vulnerable range — O3 confirms CVE-2026-43944 is resolved across your whole dependency graph.
Workarounds
Stop passing untrusted input into the interpreter or shell: call the affected binary with an argument array rather than a composed command string, reject anything outside a strict allowlist of expected values, and run the component under an account that cannot reach beyond the work it legitimately does.

Frequently Asked Questions

### Impact _Arbitrary local code execution via deep links, CLI `--opts`, or crafted shortcuts. Affected users: electerm installs that accept protocol URLs or CLI options (affected versions listed in the original report). Exploit requires clicking a crafted `electerm://...` link or opening a crafted shortcut/command that launches electerm with attacker-controlled `opts`._ ### Patches Fixed in version > 3.8.8 commits: - https://github.com/electerm/electerm/commit/8a6a17951e96d715f5a231532bbd8303fe208700 - https://github.com/electerm/electerm/commit/a79e06f4a1f0ac6376c3d2411ef4690fa0377742 - h

O3 Security · Impact-Aware SCA

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