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CVE-2020-15944

20
FAUCET Score

CVE-2020-15944 is a persistent cross-site scripting (XSS) vulnerability affecting the Gantt-Chart module for Jira, specifically versions prior to 5.5.5. This medium-severity flaw (CVSS 5.4) allows an authenticated attacker to embed malicious scripts into other users' dashboards due to missing input validation. While the attack complexity is low, it requires user interaction and could lead to limited confidentiality and integrity impacts. There is currently no evidence of active exploitation, public exploit code, or significant community discussion surrounding this vulnerability.

Impacted Technologies

VendorProductVersion(s)CPE
< 5.5.5CPE matchmatch criteria
cpe:2.3:a:gantt-chart_project:gantt-chart:*:*:*:*:*:jira:*:*

CVSS Data

CVSS version used by this source: 3.1

5.4MEDIUM

CVSS:3.1/AV:N/AC:L/PR:L/UI:R/S:C/C:L/I:L/A:N

Attack Vector
NETWORK
Attack Complexity
LOW
Privileges Required
LOW
User Interaction
REQUIRED
Scope
CHANGED
Confidentiality Impact
LOW
Integrity Impact
LOW
Availability Impact
NONE
Exploitability Score
2.3
Impact Score
2.7
CvssVersion
3.1

Exploit Intelligence

EPSS Score
1.35%
Probability of exploitation in next 30 days
EPSS Percentile
68.6%
Percentile rank of EPSS score among Peer Group
As of 2026-07-26
Model: v2026.06.15
This CVE's current EPSS score of 0.0135 is in the 95th percentile among its peer group of 15,224 CVEs.

Social Chatter

The average CVE in this peer group has 0.0 Twitter, 0.0 Reddit, 0.0 Bluesky, 0.0 Mastodon, and 0.1 GitHub mentions.

Media Mentions

No media coverage found for this CVE.

The average CVE in this peer group has 0.0 InfoSec Media, 0.0 Vendor Blog, and 0.0 Security Researcher mentions.

Remediation

Remediation records are not available for this CVE.

References

packetstormsecurity.com / files/158752/Gantt-Chart-For-Jira-5.5.4-Cross-Site-Scripting.html
ExploitThird Party AdvisoryVDB Entry
seclists.org / fulldisclosure/2020/Aug/1
ExploitMailing ListThird Party Advisory
marketplace.atlassian.com / apps/28997/gantt-chart-for-jira
ProductThird Party Advisory
syss.de / fileadmin/dokumente/Publikationen/Advisories/SYSS-2020-030.txt
ExploitThird Party Advisory