CVE-2020-15943
An issue was discovered in the Gantt-Chart module before 5.5.4 for Jira. Due to a missing...
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.
Attack profile
How easy it is to exploit
- Attack vector
- Network
- Complexity
- Low
- Privileges needed
- Low
- User interaction
- None
What an attacker can affect
- Confidentiality
- High
- Integrity
- High
- Availability
- None
Exploit likelihood
What each source reports
NVD Score used
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.
- Record
CVE-2020-15943- CVSS 3.1
- 8.1 High
CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:N - CVSS 2.0
- 5.5 Medium
AV:N/AC:L/Au:S/C:P/I:P/A:N - Weakness
- CWE-79, CWE-862
- Updated
- 2026-11-02
CVE List No score
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.
- Record
CVE-2020-15943- Updated
- 2026-11-02
EUVDEUVD-2020-7914 No score
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.
- Record
EUVD-2020-7914- Updated
- 2026-11-03
GitHub AdvisoriesGHSA-h7g5-wh6v-fwfq No score
An issue was discovered in the Gantt-Chart module before 5.5.4 for Jira. Due to a missing...
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.
- Record
GHSA-h7g5-wh6v-fwfq- Weakness
- CWE-862
- Updated
- 2026-11-02
Affected products
History
| Recorded | Changed | Sources |
|---|---|---|
| aliases | EUVD | |
| first indexed | CVE List, GitHub Advisories, NVD |
Dates are when Every CVE recorded each change. Upstream dates may differ.
In short
CVE-2020-15943 is a high vulnerability (CVSS 8.1) in Gantt-chart Project Gantt-chart, published August 4, 2020. No source lists public exploit code. EPSS puts the chance of exploitation in the next 30 days at 2.09%, the 81st percentile. No source names a fixed version.
References
syss.de/fileadmin/dokumente/Publikationen/Advisories/SYSS-2020-029.txt
marketplace.atlassian.com/apps/28997/gantt-chart-for-jira?hosting=cloud&tab=overview
seclists.org/fulldisclosure/2020/Aug/0
packetstormsecurity.com/files/158751/Gantt-Chart-For-Jira-5.5.3-Missing-Privilege-Check.html
nvd.nist.gov/vuln/detail/CVE-2020-15943
github.com/advisories/GHSA-h7g5-wh6v-fwfq