CVE-2019-18345
A reflected XSS issue was discovered in DAViCal through 1.1.8. It echoes the action parameter...
A reflected XSS issue was discovered in DAViCal through 1.1.8. It echoes the action parameter without encoding. If a user visits an attacker-supplied link, the attacker can view all data the attacked user can view, as well as perform all actions in the name of the user. If the user is an administrator, the attacker can for example add a new admin user to gain full access to the application.
Attack profile
How easy it is to exploit
- Attack vector
- Network
- Complexity
- Low
- Privileges needed
- None
- User interaction
- Required
What an attacker can affect
- Confidentiality
- High
- Integrity
- High
- Availability
- None
Exploit likelihood
What each source reports
NVD Score used
9.3
A reflected XSS issue was discovered in DAViCal through 1.1.8. It echoes the action parameter without encoding. If a user visits an attacker-supplied link, the attacker can view all data the attacked user can view, as well as perform all actions in the name of the user. If the user is an administrator, the attacker can for example add a new admin user to gain full access to the application.
- Record
CVE-2019-18345- CVSS 3.1
- 9.3 Critical
CVSS:3.1/AV:N/AC:L/PR:N/UI:R/S:C/C:H/I:H/A:N - CVSS 2.0
- 4.3 Medium
AV:N/AC:M/Au:N/C:N/I:P/A:N - Weakness
- CWE-79
- Updated
- 2026-11-02
CVE List No score
A reflected XSS issue was discovered in DAViCal through 1.1.8. It echoes the action parameter without encoding. If a user visits an attacker-supplied link, the attacker can view all data the attacked user can view, as well as perform all actions in the name of the user. If the user is an administrator, the attacker can for example add a new admin user to gain full access to the application.
- Record
CVE-2019-18345- Updated
- 2026-11-02
EUVDEUVD-2019-8133 No score
A reflected XSS issue was discovered in DAViCal through 1.1.8. It echoes the action parameter without encoding. If a user visits an attacker-supplied link, the attacker can view all data the attacked user can view, as well as perform all actions in the name of the user. If the user is an administrator, the attacker can for example add a new admin user to gain full access to the application.
- Record
EUVD-2019-8133- Updated
- 2026-11-03
GitHub AdvisoriesGHSA-27vg-v28w-gqgh
9.3
A reflected XSS issue was discovered in DAViCal through 1.1.8. It echoes the action parameter...
A reflected XSS issue was discovered in DAViCal through 1.1.8. It echoes the action parameter without encoding. If a user visits an attacker-supplied link, the attacker can view all data the attacked user can view, as well as perform all actions in the name of the user. If the user is an administrator, the attacker can for example add a new admin user to gain full access to the application.
- Record
GHSA-27vg-v28w-gqgh- CVSS 3.1
- 9.3 Critical
CVSS:3.1/AV:N/AC:L/PR:N/UI:R/S:C/C:H/I:H/A:N - Weakness
- CWE-79
- Updated
- 2026-11-02
OSV
9.3
A reflected XSS issue was discovered in DAViCal through 1.1.8. It echoes the action parameter without encoding. If a user visits an attacker-supplied link, the attacker can view all data the attacked user can view, as well as perform all actions in the name of the user. If the user is an administrator, the attacker can for example add a new admin user to gain full access to the application.
- Record
CVE-2019-18345- CVSS 3.1
- 9.3 Critical
CVSS:3.1/AV:N/AC:L/PR:N/UI:R/S:C/C:H/I:H/A:N - Updated
- 2026-11-02
OSVDEBIAN-CVE-2019-18345
9.3
A reflected XSS issue was discovered in DAViCal through 1.1.8. It echoes the action parameter without encoding. If a user visits an attacker-supplied link, the attacker can view all data the attacked user can view, as well as perform all actions in the name of the user. If the user is an administrator, the attacker can for example add a new admin user to gain full access to the application.
- Record
DEBIAN-CVE-2019-18345- CVSS 3.1
- 9.3 Critical
CVSS:3.1/AV:N/AC:L/PR:N/UI:R/S:C/C:H/I:H/A:N - Updated
- 2026-11-02
OSVUBUNTU-CVE-2019-18345
9.3
A reflected XSS issue was discovered in DAViCal through 1.1.8. It echoes the action parameter without encoding. If a user visits an attacker-supplied link, the attacker can view all data the attacked user can view, as well as perform all actions in the name of the user. If the user is an administrator, the attacker can for example add a new admin user to gain full access to the application.
- Record
UBUNTU-CVE-2019-18345- CVSS 3.1
- 9.3 Critical
CVSS:3.1/AV:N/AC:L/PR:N/UI:R/S:C/C:H/I:H/A:N - Updated
- 2026-11-02
Affected products
Affected packages
| Package | Affected | Fixed |
|---|---|---|
davicalDebian:12 |
before 1.1.9.2-1 | 1.1.9.2-1 |
davicalDebian:13 |
before 1.1.9.2-1 | 1.1.9.2-1 |
davicalDebian:14 |
before 1.1.9.2-1 | 1.1.9.2-1 |
davicalDebian:8 |
before 1.1.3.1-1+deb8u1, plus listed versions 1.1.3.1-1 |
1.1.3.1-1+deb8u1 |
davicalDebian:9 |
before 1.1.5-1+deb9u1, plus listed versions 1.1.5-1 |
1.1.5-1+deb9u1 |
davicalDebian:10 |
before 1.1.8-1+deb10u1, plus listed versions 1.1.8-11.1.8-1+deb10u1~bpo9+1 |
1.1.8-1+deb10u1 |
davicalUbuntu:16.04:LTS |
All versions, plus listed versions 1.1.3.1-11.1.4-11.1.4-1ubuntu11.1.4-1ubuntu1.1 |
None known |
davicalUbuntu:18.04:LTS |
All versions, plus listed versions 1.1.5-11.1.6-11.1.7-1 |
None known |
History
| Recorded | Changed | Sources |
|---|---|---|
| aliases | EUVD | |
| first indexed | CVE List, GitHub Advisories, NVD, OSV |
Dates are when Every CVE recorded each change. Upstream dates may differ.
In short
CVE-2019-18345 is a critical vulnerability (CVSS 9.3) in Davical, published December 12, 2019. No source lists public exploit code. EPSS puts the chance of exploitation in the next 30 days at 2.24%, the 82nd percentile. Fixed in davical 1.1.9.2-1.
References
davical.org
wiki.davical.org/index.php/Main_Page
gitlab.com/davical-project/davical/blob/master/ChangeLog
hackdefense.com/publications/cve-2019-18345-davical-caldav-server-vulnerability
packetstormsecurity.com/files/155630/DAViCal-CalDAV-Server-1.1.8-Reflective-Cross-Site-Scripting.html
lists.debian.org/debian-lts-announce/2019/12/msg00016.html