Auth bypass in Ghostfolio
CVE-2026-59709
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. Attacke…
Vulnerability class: Broken Access Control
CVSS v3 metric
CVSS v3 base score 4.3 (Medium). Vector: CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:U/C:N/I:L/A:N.
Affected products
- Ghostfolio — versions 0
Weakness classification (CWE)
References
- disclosure@vulncheck.com (issue-tracking)
- disclosure@vulncheck.com (product)
- disclosure@vulncheck.com (patch)
- disclosure@vulncheck.com (third-party-advisory)
Frequently asked questions
- What is CVE-2026-59709?
- CVE-2026-59709 is a medium-severity vulnerability in Ghostfolio, classified under Missing Authorization. CVSS score: 4.3/10. Published 2026-07-07.
- How severe is CVE-2026-59709?
- Medium severity. CVSS v3 base score is 4.3 out of 10.