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CVE-2026-59709— Ghostfolio - Unauthorized Portfolio Holding Tag Modification via Missing Permission Check

Quick assessment

Affected
Ghostfolio Ghostfolio
Exploitation
No confirmed in-the-wild exploitation; assess based on exposure
Recommended action
Check the vendor advisory and references for a fixed version. If immediate upgrade is impossible, restrict exposure and increase monitoring.

Ghostfolio Ghostfolio是Ghostfolio组织开源的一款基于Web技术构建的财富管理软件。 Ghostfolio 3.6.0及之前版本存在授权问题漏洞，该漏洞源于PUT /api/v1/portfolio/holding/:dataSource/:symbol/tags端点在处理Impersonation-Id标头时未验证Access.permissions字段，可能导致具有有效只读份额令牌的攻击者修改受害者持仓标签，破坏投资组合分类和报告。

CVSS 4.3 · Medium EPSS 0.34% · P25

Affected Version Matrix 1

VendorProduct Version RangeStatus
Ghostfolio Ghostfolio ≤ 3.6.0 affected
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I. Basic Information for CVE-2026-59709

Vulnerability Information
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Vulnerability Title
Ghostfolio - Unauthorized Portfolio Holding Tag Modification via Missing Permission Check
Source: CVE Program / CVE List V5
Vulnerability 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.
Source: CVE Program / CVE List V5
CVSS Information
CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:U/C:N/I:L/A:N
Source: CVE Program / CVE List V5
Vulnerability Type
授权机制缺失
Source: CVE Program / CVE List V5
Vulnerability Title
Ghostfolio 授权问题漏洞
Source: CNNVD (China National Vulnerability Database)
Vulnerability Description
Ghostfolio Ghostfolio是Ghostfolio组织开源的一款基于Web技术构建的财富管理软件。 Ghostfolio 3.6.0及之前版本存在授权问题漏洞，该漏洞源于PUT /api/v1/portfolio/holding/:dataSource/:symbol/tags端点在处理Impersonation-Id标头时未验证Access.permissions字段，可能导致具有有效只读份额令牌的攻击者修改受害者持仓标签，破坏投资组合分类和报告。
Source: CNNVD (China National Vulnerability Database)
CVSS Information
N/A
Source: CNNVD (China National Vulnerability Database)
Vulnerability Type
N/A
Source: CNNVD (China National Vulnerability Database)

Affected Products

Vendor Product Affected Versions CPE Subscribe
Ghostfolio Ghostfolio 0 ~ 3.6.0 -

II. Public POCs for CVE-2026-59709

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III. Intelligence Information for CVE-2026-59709

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Vendor Advisories for CVE-2026-59709 (1)

Vendor Pages for CVE-2026-59709 (1)

Other References for CVE-2026-59709 (1)

IV. Related Vulnerabilities

Same product: Ghostfolio
Same vendor: Ghostfolio
Same weakness: CWE-862

V. Comments for CVE-2026-59709

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