CVE-2026-59709Public exploitNetwork attack vectorHinoki check available

Unauthorized portfolio tag modification via unchecked impersonation permissions

Published Jul 7, 2026 · Updated Sep 24, 2026

Missing authorization in Ghostfolio 3.6.0 and earlier allows remote authenticated users to modify portfolio holding tags. The updateHoldingTags path passes the Impersonation-Id value through validateImpersonationId without checking the Access.permissions field before updateTags writes the grantor's records. A valid read-only share grant is required, and exploitation can assign or remove tags, corrupting portfolio categorization, filters, and reports.

CVSS severity5.3
Medium
EPSS probability0.34%
Next 30 days · Oct 19, 2026
Known exploitationUnconfirmed
Based on sourced intelligence
Hinoki checkAvailable
Coverage for this vulnerability

See if you're affected

Explore vulnerability checks for your environment with Hinoki.

Get started

Summary

What happened

Missing authorization in Ghostfolio 3.6.0 and earlier allows remote authenticated users to modify portfolio holding tags. The updateHoldingTags path passes the Impersonation-Id value through validateImpersonationId without checking the Access.permissions field before updateTags writes the grantor's records. A valid read-only share grant is required, and exploitation can assign or remove tags, corrupting portfolio categorization, filters, and reports.

The record

CVE
CVE-2026-59709
Published
Jul 7, 2026
Updated
Sep 24, 2026
Vendor
Ghostfolio
Product
Ghostfolio
Classifications
CWE-862, T1565.001
Attack vector
network
Privileges
authenticated

Timeline

How it unfolded

  1. Jul 7, 2026CVE publishedPublication date reported by the CVE source.
  2. Sep 24, 2026Record updatedLatest update available in the CVE record.

Exploitability

Present is not the same as exploitable

Compare your product and version with the public record. A matching version still requires validation against your environment.

Is a vulnerable build present?

Compare these published version ranges with your installed build and any vendor patches.

  1. Affected versionversion=0 <=3.6.0

What conditions does exploitation require?

Attack vectornetwork
Required privilegesauthenticated

What is affected?

Ghostfolio · Ghostfolioversion=0 <=3.6.0

Published CVSS scores

4.3VulnCheckCVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:U/C:N/I:L/A:N
5.3VulnCheckCVSS:4.0/AV:N/AC:L/AT:N/PR:L/UI:N/VC:N/VI:L/VA:N/SC:N/SI:N/SA:N

CVSS describes severity. EPSS estimates exploitation probability.

Attacks

What attackers are doing with it

Daily unique IPs observed by Shadowserver honeypots for known exploited vulnerabilities (KEVs). Missing observations do not establish an absence of attacks.

Activity data is delayed. The latest report is Sep 28, 2026.

Daily unique IPsNo honeypot observations are available for this CVE in the selected window.

No observations available

Sep 22, 2026Sep 28, 2026
Latest reporting daySep 28, 2026
Latest daily unique IPsUnavailable
Prior 30-day averageUnavailable
SourceShadowserver honeypots (KEV)
Vectornetwork
Privilegesauthenticated
Known exploitationUnconfirmed
Public exploitPublished

Weakness, pattern, technique

CWE-862Missing Authorization
T1565.001Stored Data Manipulation

Public exploit references

Labels summarize the accepted research assessment. They do not indicate a test against your environment.

Technologies

Your stack

See the directory against your own environment.

Your stack

Check the software in your environment

Get started to see how Hinoki identifies affected software and validates exploitability in your environment.

Get started