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 ListNo 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-2019-8133No 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
- 2026-11-12
OSVUSN-9050-1No score
davical vulnerabilities
It was discovered that DAViCal did not properly encode certain request parameters, leading to a reflected cross-site scripting vulnerability. A remote attacker could possibly use this issue to perform actions as another user, including adding administrator accounts. (CVE-2019-18345)
It was discovered that DAViCal did not protect against cross-site request forgery. A remote attacker could possibly use this issue to perform actions as an authenticated user, including adding administrator accounts. (CVE-2019-18346)
It was discovered that DAViCal did not properly sanitize certain user account fields, leading to a stored cross-site scripting vulnerability. An authenticated user could possibly use this issue to execute arbitrary script in the browser of another user, including an administrator. (CVE-2019-18347)
- Record
USN-9050-1- Updated
- 2026-11-12
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 From an advisory covering 3 CVEs | before 1.1.3.1-1+deb8u1, plus listed versions 1.1.3.1-1 | 1.1.3.1-1+deb8u1 |
davicalDebian:9 From an advisory covering 3 CVEs | before 1.1.5-1+deb9u1, plus listed versions 1.1.5-1 | 1.1.5-1+deb9u1 |
davicalDebian:10 From an advisory covering 3 CVEs | 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:Pro:18.04:LTS | before 1.1.7-1ubuntu0.1~esm1, plus listed versions 1.1.5-11.1.6-11.1.7-1 | 1.1.7-1ubuntu0.1~esm1 |
davicalUbuntu:Pro:18.04:LTS From an advisory covering 3 CVEs | before 1.1.7-1ubuntu0.1~esm1, plus listed versions 1.1.5-11.1.6-11.1.7-1 | 1.1.7-1ubuntu0.1~esm1 |
History
| Recorded | Changed | Sources |
|---|---|---|
| affected, aliases, references | OSV | |
| affected, facts | ||
| 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 83rd 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
Show 10 moreShow less
debian.org/security/2019/dsa-4582
seclists.org/bugtraq/2019/Dec/30
nvd.nist.gov/vuln/detail/CVE-2019-18345
github.com/advisories/GHSA-27vg-v28w-gqgh
security-tracker.debian.org/tracker/CVE-2019-18345
ubuntu.com/security/CVE-2019-18345
cve.org/CVERecord?id=CVE-2019-18345
ubuntu.com/security/notices/USN-9050-1
ubuntu.com/security/CVE-2019-18346
ubuntu.com/security/CVE-2019-18347