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TI-2020-12556 Aliases CVE-2020-15943GHSA-h7g5-wh6v-fwfq

An issue was discovered in the Gantt-Chart module before 5.5.4 for Jira.

Priority LOW 39CWE-79Published · Updated

Key facts

Attack vector
Network
Privileges required
Low
User interaction
None
Attack complexity
Low
Impact type
Cross-site scripting, Security bypass
Confidentiality · integrity · availability
High · High · None
Fix status
No fix listed

Attack profile from CVSS 3.1 · NVD. Fix status from CNA. Impact type from CWE-79 and CWE-862.

Summary

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.

Why it matters now

EPSS 0.02094 81st percentileScored 2026-11-07
Public exploit Yes 3 exploit referencesTagged by NVD
Fix No fix listed No fixed version in the sources yet

SSVC decision points

Not available: CISA has not published SSVC decision points for this record.

Affected products

VendorProductAffected versionsFixed inStatusSource
——all versions—No fix listedCNA
  • — Vendor— Affected all versions Fixed in — No fix listed CNA

CPE configurations NVD · 1

CPEVersionsRoleVendor
cpe:2.3:a:gantt-chart_project:gantt-chart:*:*:*:*:*:jira:*:*before 5.5.4VulnerableGantt-chart Project
  • cpe:2.3:a:gantt-chart_project:gantt-chart:*:*:*:*:*:jira:*:* Versions before 5.5.4 Vulnerable ·Gantt-chart Project

Remediation

No fixed version listed by the sources yet.

Timeline

  1. 2026-10-02 Threatist record created from CVE-2020-15943
  2. 2026-10-03 Alias added: GHSA-h7g5-wh6v-fwfq

References

Exploit 3

Advisory 1

  • TI-2020-12557 An issue was discovered in the Gantt-Chart module before 5.5.5 for Jira. CVSS 3.1MEDIUM 5.4

Sources

This product uses the NVD API but is not endorsed or certified by the NVD. Sources and licences