CVE-2020-15944

Name: CVE-2020-15944
Creator: NVD / NIST
Published: 2020-08-04T20:15:12.227+00:00
License: https://creativecommons.org/publicdomain/zero/1.0/

MEDIUMCVSS 5.4/10EPSS 1.35%

Last modified Jun 17, 2026

CVE-2020-15944 is a medium-severity vulnerability rated 5.4/10 on the CVSS scale. An issue was discovered in the Gantt-Chart module before 5.5.5 for Jira. Due to missing validation of user input, it is vulnerable to a persistent XSS attack. EPSS estimates a 1.35% chance of exploitation in the next 30 days.

Description

An issue was discovered in the Gantt-Chart module before 5.5.5 for Jira. Due to missing validation of user input, it is vulnerable to a persistent XSS attack. An attacker can embed the attack vectors in the dashboard of other users. To exploit this vulnerability, an attacker has to be authenticated.

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

1.35%

67.9th percentile

Probability of exploitation in the next 30 days. Learn more

Weakness Enumeration

CWE-79

Affected Software

Vendor	Product	Versions
Gantt-Chart Project	Gantt-Chart	< 5.5.5

References

http://packetstormsecurity.com/files/158752/Gantt-Chart-For-Jira-5.5.4-Cross-Site-Scripting.htmlExploit, Third Party Advisory, VDB Entry
http://seclists.org/fulldisclosure/2020/Aug/1Exploit, Mailing List, Third Party Advisory
https://marketplace.atlassian.com/apps/28997/gantt-chart-for-jira?hosting=cloud&tab=overviewProduct, Third Party Advisory
https://www.syss.de/fileadmin/dokumente/Publikationen/Advisories/SYSS-2020-030.txtExploit, Third Party Advisory
http://packetstormsecurity.com/files/158752/Gantt-Chart-For-Jira-5.5.4-Cross-Site-Scripting.htmlExploit, Third Party Advisory, VDB Entry
http://seclists.org/fulldisclosure/2020/Aug/1Exploit, Mailing List, Third Party Advisory
https://marketplace.atlassian.com/apps/28997/gantt-chart-for-jira?hosting=cloud&tab=overviewProduct, Third Party Advisory
https://www.syss.de/fileadmin/dokumente/Publikationen/Advisories/SYSS-2020-030.txtExploit, Third Party Advisory

Timeline

Published: Aug 4, 2020
Last Modified: Jun 17, 2026
Status: Modified

Frequently Asked Questions

What is CVE-2020-15944?

How severe is CVE-2020-15944?

CVE-2020-15944 has a CVSS score of 5.4/10 (MEDIUM severity). The EPSS model estimates a 1.35% probability of exploitation in the next 30 days.

How do I fix CVE-2020-15944?

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-2020-15944?

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

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Source: NVD / NIST