CVE-2026-22685Network attack vector

Arbitrary file overwrite via unchecked archive paths

Published Jan 10, 2026 · Updated Jan 10, 2026

Path traversal in DevToys 2.0.0.0 through 2.0.8.0 allows context-dependent attackers to overwrite files via a malicious extension package. ExtensionInstallationManager combines each untrusted NUPKG entry name with the extension directory and passes the result to ExtractFile without verifying that the resolved path remains inside that directory. Exploitation requires a user to install the crafted package; files are written with the DevToys process privileges, enabling configuration tampering, file corruption, or code execution.

CVSS severity8.8
High
EPSS probability0.46%
Next 30 days · Sep 16, 2026
Known exploitationUnconfirmed
Based on sourced intelligence
Hinoki checkNot available
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Summary

What happened

Path traversal in DevToys 2.0.0.0 through 2.0.8.0 allows context-dependent attackers to overwrite files via a malicious extension package. ExtensionInstallationManager combines each untrusted NUPKG entry name with the extension directory and passes the result to ExtractFile without verifying that the resolved path remains inside that directory. Exploitation requires a user to install the crafted package; files are written with the DevToys process privileges, enabling configuration tampering, file corruption, or code execution.

The record

CVE
CVE-2026-22685
Published
Jan 10, 2026
Updated
Jan 10, 2026
Vendor
DevToys
Product
DevToys
Classifications
CWE-22, T1204.002
Attack vector
network
Privileges
unauthenticated

Timeline

How it unfolded

  1. Jan 10, 2026CVE publishedPublication date reported by the CVE source.
  2. Jan 10, 2026Record updatedLatest update available in the CVE record.

Exploitability

Present is not the same as exploitable

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Is a vulnerable build present?

Compare these published version ranges with your installed build and any vendor patches.

  1. Affected versionversion=>= 2.0.0.0, < 2.0.9.0

What conditions does exploitation require?

Attack vectornetwork
Required privilegesunauthenticated

What is affected?

DevToys · DevToysversion=>= 2.0.0.0, < 2.0.9.0

Published CVSS scores

9.8NIST NVDCVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H
8.8GitHub, Inc.CVSS:3.1/AV:N/AC:L/PR:N/UI:R/S:U/C:H/I:H/A:H

CVSS describes severity. EPSS estimates exploitation probability.

Attacks

What attackers are doing with it

Daily unique IPs observed by Shadowserver honeypots for known exploited vulnerabilities (KEVs). Missing observations do not establish an absence of attacks.

Daily unique IPsNo honeypot observations are available for this CVE in the selected window.

No observations available

Sep 10, 2026Sep 16, 2026
Latest reporting daySep 16, 2026
Latest daily unique IPsUnavailable
Prior 30-day averageUnavailable
SourceShadowserver honeypots (KEV)
Vectornetwork
Privilegesunauthenticated
Known exploitationUnconfirmed
Public exploitUnconfirmed

Weakness, pattern, technique

CWE-22Improper Limitation of a Pathname to a Restricted Directory ('Path Traversal')
T1204.002User Execution: Malicious File

Public exploit references

No public exploit references are available in this record.

Labels summarize the accepted research assessment. They do not indicate a test against your environment.

Technologies

Your stack

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Your stack

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