Medium

OpenC3 stores passwords in clear text (`GHSL-2024-129`)

Disclosed: 02.10.2024
Updated: 11.10.2026 11:20

Summary

OpenC3 COSMOS stores the password of a user unencrypted in the LocalStorage of a web browser. This makes the user password susceptible to exfiltration via Cross-site scripting (see GHSL-2024-128).

Note: This CVE only affects Open Source edition, and not OpenC3 COSMOS Enterprise Edition

Impact

This issue may lead to Information Disclosure.

Affected software

Click a technology to see all vulnerabilities affecting it.

Platform	Package	Vulnerable versions	Fixed in
npm package	@openc3/tool-common	< 5.19.0	5.19.0
Python (PyPI)	openc3	< 5.19.0	5.19.0

References

CVSS score 5.9/10

CVSS vector: CVSS:3.1/AV:N/AC:H/PR:N/UI:N/S:U/C:H/I:N/A:N
Weakness (CWE): CWE-312, CWE-522
Platform: npm, Python (PyPI)
Package: @openc3/tool-common, openc3
Disclosed: 02.10.2024
Updated: 11.10.2026 11:20

Sources and licenses

OSV / GitHub Advisory Database - PYSEC-2024-121 - PyPA Advisory Database; CC BY 4.0

OSV / GitHub Advisory Database - GHSA-4xqv-47rm-37mm - CC BY 4.0

Vulnerability history: openc3

All published vulnerabilities of this package (Python (PyPI)), newest first. Shows whether this is a one-off slip or a package that needs watching.

All (15) in the archive

Total entries: 15
First → latest: 10.2024 05.2026
Without a fix: 7
Exploited in attacks: 0

Severity breakdown

Critical 5
High 5
Medium 5

Disclosures per year

2024: 3
2025: 7
2026: 5

04.05.2026

OpenC3 COSMOS provides the functionality needed to send commands to and receive data from one or more embedded systems. Prior to version 7.0.0-rc3, the Script Runner widget allows users to execute Pyt

High · 8.1 CVE-2026-42088 < 7.0.0 7.0.0
04.05.2026

OpenC3 COSMOS provides the functionality needed to send commands to and receive data from one or more embedded systems. From version 6.7.0 to before version 7.0.0-rc3, a SQL injection vulnerability ex

Critical · 9.6 CVE-2026-42087 >= 6.7.0, < 7.0.0 7.0.0
04.05.2026

OpenC3 COSMOS provides the functionality needed to send commands to and receive data from one or more embedded systems. Prior to versions 6.10.5 and 7.0.0-rc3, the OpenC3 password change functionality

High · 8.1 CVE-2026-42084 < 6.10.5 6.10.5
13.06.2025

Weak password requirements in OpenC3 COSMOS v6.0.0 allow attackers to bypass authentication via a brute force attack.

Critical · 9.8 CVE-2025-28389 <= 6.0.0 no fix
13.06.2025

An issue in the /script-api/scripts/ endpoint of OpenC3 COSMOS before 6.1.0 allows attackers to execute a directory traversal.

Critical · 9.1 CVE-2025-28384 <= 6.0.0 no fix
13.06.2025

An issue in the openc3-api/tables endpoint of OpenC3 COSMOS before 6.1.0 allows attackers to execute a directory traversal.

High · 7.5 CVE-2025-28382 <= 6.0.0 no fix
13.06.2025

A credential leak in OpenC3 COSMOS before v6.0.2 allows attackers to access service credentials as environment variables stored in all containers.

High · 7.5 CVE-2025-28381 <= 6.0.0 no fix
13.06.2025

OpenC3 COSMOS before v6.0.2 was discovered to contain hardcoded credentials for the Service Account.

Critical · 9.8 CVE-2025-28388 <= 6.0.0 no fix
13.06.2025

A remote code execution (RCE) vulnerability in the Plugin Management component of OpenC3 COSMOS v6.0.0 allows attackers to execute arbitrary code via uploading a crafted .txt file.

Critical · 9.8 CVE-2025-28386 <= 6.0.0 no fix
02.10.2024

OpenC3 Path Traversal via screen controller (`GHSL-2024-127`)

High · 6.5 CVE-2024-46977 < 5.19.0 5.19.0
02.10.2024

OpenC3 stores passwords in clear text (`GHSL-2024-129`) this entry

Medium · 5.9 CVE-2024-47529 < 5.19.0 5.19.0

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