How severe is CVE-2026-4092?

No CVSS score has been assigned to CVE-2026-4092 yet. Review the advisory details and affected package list to assess your exposure.

Which packages are affected by CVE-2026-4092?

CVE-2026-4092 affects the following packages: @google/clasp (npm). Ecosystems affected: npm.

How do I fix CVE-2026-4092?

Update @google/clasp to 3.2.0 or later, then make sure no transitive (indirect) dependency still pins the vulnerable range — O3 confirms CVE-2026-4092 is resolved across your whole dependency graph.

How do I detect CVE-2026-4092 in my npm dependencies?

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

How do I mitigate CVE-2026-4092 if there is no patch (or I can't update yet)?

Resolve every user-supplied path to its canonical form and reject anything that escapes the intended directory, and run the component under an account that has no read or write access outside the directory it legitimately serves.

Is CVE-2026-4092 actively exploited in the wild?

No public exploit code has been indexed for CVE-2026-4092 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-2026-4092?

CVE-2026-4092 has an EPSS (Exploit Prediction Scoring System) score of 0.5%, placing it in the 41th 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-2026-4092?

CVE-2026-4092 is classified as Path Traversal (CWE-22). This weakness type 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-2026-4092 published, and has it been updated?

CVE-2026-4092 was published on March 13, 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-2026-4092 — @google/clasp

Fix: google/clasp#1109

CVE-2026-4092 is a Path Traversal vulnerability in @google/clasp. A fix is available for @google/clasp — see the affected versions and patch details below.

Arbitrary File Write via Path Traversal in Google clasp leading to RCE

Also known asGHSA-hqjg-pww4-pcgq

Published

Mar 13, 2026

Updated

Oct 28, 2026

Affected

1 pkg

Patched

1 / 1

Exploits

None indexed

Exploitation data as of Nov 3, 2026 · OSV.dev, NVD, FIRST.org (EPSS)

Exploitation Status

No confirmed exploitation observed yet

CISA assesses this as automatable — exploitation doesn’t require manual, per-target effort, which raises the odds of mass scanning and opportunistic attacks.
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-2026-4092.

EPSS Exploitation Probability

via FIRST.org ↗

0.5%probability of exploitation in next 30 days

Lower Risk0.00%

Lower risk than most CVEs41th percentile — riskier than 41% 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.

17other npm packages depend on this — each one inherits the vulnerability until it's patched upstream

@google/claspnpm

219Kdownloads / week

Description

Impact

Allows an attacker to perform a "Path Traversal" attack to modify files outside the projects directory, potentially allowing for running attacker code on the developer's machine.

Patches

Fixed in version 3.2.0

Workarounds

Only clone or pull scripts from trusted sources
Review the output of the pull and clone commands to verify only expected project files are modified

Affected Packages

1 total 1 fixed

Ecosystem	Package	Vulnerable range	Fix
📦npm	`@google/clasp`	all versions	3.2.0`npm install @google/clasp@3.2.0`

Affected Products

1 product · 1 configurations

Application

claspgoogle

< 3.2.0

range

Detection & mitigation playbook

Open-source dependency

Detect
Scan your dependency tree (package-lock.json, pnpm-lock.yaml, requirements.txt, go.sum, etc.) for @google/clasp, including transitive dependencies — a direct dependency you never call can still pull in a vulnerable version.
Fix
Update @google/clasp to 3.2.0 or later, then make sure no transitive (indirect) dependency still pins the vulnerable range — O3 confirms CVE-2026-4092 is resolved across your whole dependency graph.
Workarounds
Resolve every user-supplied path to its canonical form and reject anything that escapes the intended directory, and run the component under an account that has no read or write access outside the directory it legitimately serves.

Frequently Asked Questions

### Impact Allows an attacker to perform a "Path Traversal" attack to modify files outside the projects directory, potentially allowing for running attacker code on the developer's machine. ### Patches Fixed in version 3.2.0 ### Workarounds * Only clone or pull scripts from trusted sources * Review the output of the `pull` and `clone` commands to verify only expected project files are modified

O3 Security · Impact-Aware SCA

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