CVE-2026-35454
Code Extension Marketplace has a Zip Slip Path Traversal
Description
The Code Extension Marketplace is an open-source alternative to the VS Code Marketplace. Prior to 2.4.2, Zip Slip vulnerability in coder/code-marketplace allowed a malicious VSIX file to write arbitrary files outside the extension directory. ExtractZip passed raw zip entry names to a callback that wrote files via filepath.Join with no boundary check; filepath.Join resolved .. components but did not prevent the result from escaping the base path. This vulnerability is fixed in 2.4.2.
INFO
Published Date :
April 6, 2026, 10:16 p.m.
Last Modified :
July 24, 2026, 9:10 p.m.
Remotely Exploit :
Yes !
Source :
[email protected]
CVSS Scores
| Score | Version | Severity | Vector | Exploitability Score | Impact Score | Source |
|---|---|---|---|---|---|---|
| CVSS | 134c704f-9b21-4f2e-91b3-4a467353bcc0 | |||||
| CVSS 3.1 | MEDIUM | [email protected] | ||||
| CVSS 4.0 | HIGH | [email protected] |
Solution
- Update the Code Extension Marketplace to version 2.4.2.
- Ensure zip entry names are validated before writing files.
Public PoC/Exploit Available at Github
CVE-2026-35454 has a 1 public
PoC/Exploit available at Github.
Go to the Public Exploits tab to see the list.
References to Advisories, Solutions, and Tools
Here, you will find a curated list of external links that provide in-depth
information, practical solutions, and valuable tools related to
CVE-2026-35454.
| URL | Resource |
|---|---|
| https://github.com/coder/code-marketplace/releases/tag/v2.4.2 | Release Notes |
| https://github.com/coder/code-marketplace/security/advisories/GHSA-8x9r-hvwg-c55h | Third Party Advisory |
CWE - Common Weakness Enumeration
While CVE identifies
specific instances of vulnerabilities, CWE categorizes the common flaws or
weaknesses that can lead to vulnerabilities. CVE-2026-35454 is
associated with the following CWEs:
Common Attack Pattern Enumeration and Classification (CAPEC)
Common Attack Pattern Enumeration and Classification
(CAPEC)
stores attack patterns, which are descriptions of the common attributes and
approaches employed by adversaries to exploit the CVE-2026-35454
weaknesses.
We scan GitHub repositories to detect new proof-of-concept exploits. Following list is a collection of public exploits and proof-of-concepts, which have been published on GitHub (sorted by the most recently updated).
Profile README
Results are limited to the first 15 repositories due to potential performance issues.
The following list is the news that have been mention
CVE-2026-35454 vulnerability anywhere in the article.
The following table lists the changes that have been made to the
CVE-2026-35454 vulnerability over time.
Vulnerability history details can be useful for understanding the evolution of a vulnerability, and for identifying the most recent changes that may impact the vulnerability's severity, exploitability, or other characteristics.
-
CVE Translated by [email protected]
Jul. 24, 2026
Action Type Old Value New Value Added Translation Title: code-marketplace de coder, Description: El Code Extension Marketplace es una alternativa de código abierto al VS Code Marketplace. Antes de la versión 2.4.2, una vulnerabilidad Zip Slip en coder/code-marketplace permitía que un archivo VSIX malicioso escribiera archivos arbitrarios fuera del directorio de la extensión. ExtractZip pasaba nombres de entrada zip sin procesar a una función de devolución de llamada que escribía archivos a través de filepath.Join sin una comprobación de límites; filepath.Join resolvía componentes '..' pero no evitaba que el resultado escapara de la ruta base. Esta vulnerabilidad está corregida en la versión 2.4.2. -
CVE Modified by [email protected]
Jun. 17, 2026
Action Type Old Value New Value Added Affected [{'vendor': 'coder', 'product': 'code-marketplace', 'versions': [{'status': 'affected', 'version': '< 2.4.2'}]}] -
CVE Modified by 134c704f-9b21-4f2e-91b3-4a467353bcc0
Jun. 17, 2026
Action Type Old Value New Value Added SSVC {'id': 'CVE-2026-35454', 'role': 'CISA Coordinator', 'options': [{'exploitation': 'none'}, {'automatable': 'yes'}, {'technicalImpact': 'partial'}], 'version': '2.0.3', 'timestamp': '2026-04-07T14:35:14.881298Z'} -
Initial Analysis by [email protected]
Apr. 28, 2026
Action Type Old Value New Value Added CVSS V3.1 AV:N/AC:L/PR:L/UI:N/S:U/C:N/I:H/A:N Added CPE Configuration OR *cpe:2.3:a:coder:code-marketplace:*:*:*:*:*:*:*:* versions up to (including) 2.4.1 Added Reference Type GitHub, Inc.: https://github.com/coder/code-marketplace/releases/tag/v2.4.2 Types: Release Notes Added Reference Type GitHub, Inc.: https://github.com/coder/code-marketplace/security/advisories/GHSA-8x9r-hvwg-c55h Types: Third Party Advisory -
New CVE Received by [email protected]
Apr. 06, 2026
Action Type Old Value New Value Added Description The Code Extension Marketplace is an open-source alternative to the VS Code Marketplace. Prior to 2.4.2, Zip Slip vulnerability in coder/code-marketplace allowed a malicious VSIX file to write arbitrary files outside the extension directory. ExtractZip passed raw zip entry names to a callback that wrote files via filepath.Join with no boundary check; filepath.Join resolved .. components but did not prevent the result from escaping the base path. This vulnerability is fixed in 2.4.2. Added CVSS V4.0 AV:N/AC:L/AT:N/PR:N/UI:N/VC:N/VI:H/VA:N/SC:N/SI:N/SA:N/E:X/CR:X/IR:X/AR:X/MAV:X/MAC:X/MAT:X/MPR:X/MUI:X/MVC:X/MVI:X/MVA:X/MSC:X/MSI:X/MSA:X/S:X/AU:X/R:X/V:X/RE:X/U:X Added CWE CWE-22 Added Reference https://github.com/coder/code-marketplace/releases/tag/v2.4.2 Added Reference https://github.com/coder/code-marketplace/security/advisories/GHSA-8x9r-hvwg-c55h