CVE-2019-18347

Name: CVE-2019-18347
Creator: NVD / NIST
Published: 2019-12-04T18:15:16.26+00:00
License: https://creativecommons.org/publicdomain/zero/1.0/

MEDIUMCVSS 5.4/10EPSS 1.13%

Last modified Jun 17, 2026

CVE-2019-18347 is a medium-severity vulnerability rated 5.4/10 on the CVSS scale. 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. EPSS estimates a 1.13% chance of exploitation in the next 30 days.

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.

Metrics

CVSS 3.1

5.4/10

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

EPSS Probability

1.13%

62.4th percentile

Probability of exploitation in the next 30 days. Learn more

Weakness Enumeration

CWE-79

Affected Software

Vendor	Product	Versions
Davical	Davical	<= 1.1.8

References

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

Timeline

Published: Dec 4, 2019
Last Modified: Jun 17, 2026
Status: Modified

Frequently Asked Questions

What is CVE-2019-18347?

How severe is CVE-2019-18347?

CVE-2019-18347 has a CVSS score of 5.4/10 (MEDIUM severity). The EPSS model estimates a 1.13% probability of exploitation in the next 30 days.

How do I fix CVE-2019-18347?

Check the vendor references and advisories linked above for patched versions and mitigation guidance. You can also run a Strix scan to test if your systems are affected.

Are you affected by CVE-2019-18347?

Run a free Strix scan to check your systems for this vulnerability.

Scan your code now

Source: NVD / NIST