CVE-2026-59709 — Ghostfolio - Unauthorized Portfolio Holding Tag Modification via Missing Permission Check
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-…
Published: 2026-07-07 · CVSS: 5.3 · CVSS 4.0
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.
Source: CVE Program · Revision 8b16575c39f1e1810c5e863010da073d2d3285e7