CVE-2020-15943

high

Description

An issue was discovered in the Gantt-Chart module before 5.5.4 for Jira. Due to a missing privilege check, it is possible to read and write to the module configuration of other users. This can also be used to deliver an XSS payload to other users' dashboards. To exploit this vulnerability, an attacker has to be authenticated.

References

https://www.syss.de/fileadmin/dokumente/Publikationen/Advisories/SYSS-2020-029.txt

https://marketplace.atlassian.com/apps/28997/gantt-chart-for-jira?hosting=cloud&tab=overview

http://seclists.org/fulldisclosure/2020/Aug/0

http://packetstormsecurity.com/files/158751/Gantt-Chart-For-Jira-5.5.3-Missing-Privilege-Check.html

Details

Source: Mitre, NVD

Published: 2020-08-04

Updated: 2026-06-17

Risk Information

CVSS v2

Base Score: 5.5

Vector: CVSS2#AV:N/AC:L/Au:S/C:P/I:P/A:N

Severity: Medium

CVSS v3

Base Score: 8.1

Vector: CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:N

Severity: High

EPSS

EPSS: 0.01432