CVE-2026-59709
5.3
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
Summary
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.
Affected Software
| Vendor | Product | Version Range | Status |
|---|---|---|---|
| Ghostfolio | Ghostfolio | 0 <= 3.6.0 | affected |
| Ghostfolio | Ghostfolio | 0 < 697ef59 | affected |
Weaknesses
- CWE-862: Missing Authorization
References
- https://github.com/ghostfolio/ghostfolio/issues/7196
- https://github.com/ghostfolio/ghostfolio
- https://github.com/ghostfolio/ghostfolio/commit/697ef59e3b58bebc5c21a9e482e4f5643390f316
- https://www.vulncheck.com/advisories/ghostfolio-unauthorized-portfolio-holding-tag-modification-via-missing-permission-check
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