Ghostfolio's PUT /api/v1/portfolio/holding/:dataSource/:symbol/tags endpoint fails to verify Access.permissions field
Source GCVE Database
Not known to be exploited · CVSS 4.3 Medium.
Data as of 26 Oct 2026, 14:05 UTC
- EPSS
- 0.3% chance of exploitation in 30 days – higher than 26% of CVEsExploit Prediction Scoring System: the likelihood attackers will use this flaw soon.
CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:U/C:N/I:L/A:NExploitation evidence
Disclosed: evidence found.
CVE published 7 Jul 2026
Detectable: no evidence on record.
No public nuclei template indexed
Weaponised: no evidence on record.
No public exploit code indexed in Metasploit or Exploit-DB
Exploited in the wildExploited: no evidence on record.
Not in CISA KEV and no source reports exploitation
Observed by OffSeq MirageSeen by Mirage: no evidence on record.
No attack traffic recorded by OffSeq Mirage sensors
A missing step is not evidence of safety. Sources: cve.org (opens in a new tab), the Metasploit, Exploit-DB and nuclei-templates index as of 26 Oct 2026.
What to do
AI-suggested
Until a fix is available, restrict access tokens to trusted users and monitor API usage for anomalous tag modification attempts. Avoid using the Impersonation-Id header with read-only tokens if possible.
Description
CVE-2026-59709 is a vulnerability in Ghostfolio's API where the endpoint for modifying portfolio holding tags fails to properly verify access permissions related to the Impersonation-Id header. This flaw allows users with read-only access tokens to modify tags on portfolio holdings, which could corrupt portfolio categorization and reporting.
References
- nvd.nist.gov/vuln/detail/CVE-2026-59709 (opens in a new tab)
- github.com/ghostfolio/ghostfolio/issues/7196 (opens in a new tab)
- github.com/ghostfolio/ghostfolio/commit/697ef59e3b58bebc5c21a9e482e4f5643390f316 (opens in a new tab)
- github.com/ghostfolio/ghostfolio (opens in a new tab)
- vulncheck.com/advisories/ghostfolio-unauthorized-portfolio-holding-tag-modification-via-missing-permission-check (opens in a new tab)