CVE-2026-59709

Ghostfolio's PUT /api/v1/portfolio/holding/:dataSource/:symbol/tags endpoint fails to verify Access.permissions field when processing the Impersonation-Id header, allowing read-only access grantees to modify portfolio holding tags. Attackers with valid read-only share tokens can assign or remove tags on victim holdings, corrupting portfolio categorization and reports.

CVSS v3 4.3 MEDIUM

4.3^/10

CVSS v3 : MEDIUM

Vector :

Exploitability : 2.8 / Impact : 1.4

Attack Vector NETWORK

Attack Complexity LOW

Privileges Required LOW

User Interaction NONE

Confidentiality Impact NONE

Integrity Impact LOW

Availability Impact NONE

Scope UNCHANGED

References

Link	Resource
https://github.com/ghostfolio/ghostfolio
https://github.com/ghostfolio/ghostfolio/commit/697ef59e3b58bebc5c21a9e482e4f5643390f316
https://github.com/ghostfolio/ghostfolio/issues/7196
https://www.vulncheck.com/advisories/ghostfolio-unauthorized-portfolio-holding-tag-modification-via-missing-permission-check
https://github.com/ghostfolio/ghostfolio/issues/7196

Configurations

No configuration.

History

No history.

Information

Published : 2026-07-07 15:16

Updated : 2026-09-17 18:16

NVD link : CVE-2026-59709

Mitre link : CVE-2026-59709

CVE.ORG link : CVE-2026-59709

JSON object : View

Products Affected

No product.

CWE

CWE-862

Missing Authorization

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