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CVE-2026-59709

Ghostfolio - Unauthorized Portfolio Holding Tag Modification via Missing Permission Check

CVSS 4.0 5.3 MEDIUMCVSS 3.1 4.3 MEDIUMCheck source for fixed versionsKEV status unknown

Original advisory

cve-program · CVE-2026-59709

Published

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.

Read the publisher's advisory

Affected versions, risk and source history

cve-program · CVE-2026-59709

Published

Ghostfolio

Vendor product

Publisher's version information

Shown as published. These rules are not interpreted as NuGet package version ranges.

{
                    "vendor": "Ghostfolio",
                    "product": "Ghostfolio",
                    "defaultStatus": "unaffected",
                    "packageURL": "pkg:github/ghostfolio/ghostfolio",
                    "versions": [
                        {
                            "version": "0",
                            "status": "affected",
                            "versionType": "git",
                            "lessThanOrEqual": "3.6.0"
                        }
                    ]
                }

Original source record · Cite this exact observation · Complete original publisher JSON