---
title: "CVE-2019-18347\n    | Ubuntu"
description: Ubuntu is an open source software operating system that runs from the
  desktop, to the cloud, to all your internet connected things.
url: https://ubuntu.com/security/CVE-2019-18347?format=md
keywords: index, follow
---

# CVE-2019-18347

Publication date 4 December 2019

Last updated 26 August 2025

---

Ubuntu priority

**Medium**

[Why this priority?](https://ubuntu.com/security/cves/about#priority )

## Cvss 3 Severity Score

**5.4 · Medium**

[Score breakdown](https://ubuntu.com/security/CVE-2019-18347?format=md#impact-score)

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## 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.

## Status

Show unmaintained releases

| Package | Ubuntu Release | Status |
| --- | --- | --- |
| davical | 26.04 LTS resolute | Not affected |
| 25.10 questing | Not affected |
| 25.04 plucky | Not affected |
| 24.10 oracular | Not affected |
| 24.04 LTS noble | Not affected |
| 23.10 mantic | Not affected |
| 23.04 lunar | Not affected |
| 22.10 kinetic | Not affected |
| 22.04 LTS jammy | Not affected |
| 21.10 impish | Not affected |
| 21.04 hirsute | Not affected |
| 20.10 groovy | Not affected |
| 20.04 LTS focal | Not affected |
| 19.10 eoan | Ignored end of life |
| 19.04 disco | Ignored end of life |
| 18.04 LTS bionic | Vulnerable |
| 16.04 LTS xenial | Vulnerable |
| 14.04 LTS trusty | Not in release |

---

* [How can I get the fixes?](https://ubuntu.com/security/cves/about#security)
* [What do statuses mean?](https://ubuntu.com/security/cves/about#statuses)

## Severity score breakdown

CVSS version:
CVSS v3.0

**Base score**

5.4 · Medium

* Base metrics

  | Parameter | Value |
  | --- | --- |
  | Attack vector | Network |
  | Attack complexity | Low |
  | Privileges required | Low |
  | User interaction | Required |
  | Scope | Changed |
  | Confidentiality impact | Low |
  | Integrity impact | Low |
  | Availability impact | None |
* Scores

  | Parameter | Value |
  | --- | --- |
  | Base score | 5.4 · Medium |
  | Exploitability score | - |
  | Impact score | - |

**Vector:** CVSS:3.1/AV:N/AC:L/PR:L/UI:R/S:C/C:L/I:L/A:N

## References

* [MITRE](https://cve.mitre.org/cgi-bin/cvename.cgi?name=CVE-2019-18347)
* [NVD](https://nvd.nist.gov/vuln/detail/CVE-2019-18347)
* [Launchpad](https://launchpad.net/bugs/cve/CVE-2019-18347)
* [Debian](https://security-tracker.debian.org/tracker/CVE-2019-18347)

### Other references

* <https://hackdefense.com/publications/cve-2019-18347-davical-caldav-server-vulnerability/>
* <https://gitlab.com/davical-project/davical/blob/master/ChangeLog>
* <https://www.davical.org/>
* <https://www.cve.org/CVERecord?id=CVE-2019-18347>