CVE-2026-59709

medium

Description

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.

References

https://www.vulncheck.com/advisories/ghostfolio-unauthorized-portfolio-holding-tag-modification-via-missing-permission-check

https://github.com/ghostfolio/ghostfolio/issues/7196

https://github.com/ghostfolio/ghostfolio/commit/697ef59e3b58bebc5c21a9e482e4f5643390f316

https://github.com/ghostfolio/ghostfolio

Details

Source: Mitre, NVD

Published: 2026-07-07

Updated: 2026-07-07

Risk Information

CVSS v2

Base Score: 4

Vector: CVSS2#AV:N/AC:L/Au:S/C:N/I:P/A:N

Severity: Medium

CVSS v3

Base Score: 4.3

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

Severity: Medium

CVSS v4

Base Score: 5.3

Vector: CVSS:4.0/AV:N/AC:L/AT:N/PR:L/UI:N/VC:N/VI:L/VA:N/SC:N/SI:N/SA:N

Severity: Medium