Which versions of Ghostfolio are affected by CVE-2026-59708?

Ghostfolio's public API endpoint allows unauthenticated access to any user's complete investment portfolio data, including holdings, quantities, buy prices, and performance metrics, posing…

How to fix or mitigate CVE-2026-59708?

Within 24 hours: Identify all Ghostfolio instances in production; review API audit logs for suspicious access to the GET /api/v1/public/:accessId/portfolio endpoint; notify affected users. Within 7 days: Implement API gateway authentication requirements or disable the public endpoint if not operationally necessary; enable API rate limiting and access logging. Within 30 days: Monitor Ghostfolio security advisories; apply vendor patch immediately upon release (version TBD pending vendor advisory).

Ghostfolio CVE-2026-59708

Q: What is the CVSS score of CVE-2026-59708?

CVE-2026-59708 has a CVSS 4.0 base score of 8.7 (High). CVSS vector: CVSS:4.0/AV:N/AC:L/AT:N/PR:N/UI:N/VC:H/VI:N/VA:N/SC:N/SI:N/SA:N/E:X/CR:X/IR:X/AR:X/MAV:X/MAC:X/MAT:X/MPR:X/MUI:X/MVC:X/MVI:X/MVA:X/MSC:X/MSI:X/MSA:X/S:X/AU:X/R:X/V:X/RE:X/U:X. EPSS exploitation probability: 0.3%.

EUVD-2026-42074 HIGH

Missing Authorization (CWE-862)

2026-07-07 disclosure@vulncheck.com

GHSA-fqj2-r74g-4gfp

Authentication Bypass

8.7

CVSS 4.0 · Vendor: vulncheck

Severity by source

Vendor (vulncheck) PRIMARY

8.7 HIGH

CVSS:4.0/AV:N/AC:L/AT:N/PR:N/UI:N/VC:H/VI:N/VA:N/SC:N/SI:N/SA:N/E:X/CR:X/IR:X/AR:X/MAV:X/MAC:X/MAT:X/MPR:X/MUI:X/MVC:X/MVI:X/MVA:X/MSC:X/MSI:X/MSA:X/S:X/AU:X/R:X/V:X/RE:X/U:X

vuln.today AI

7.5 HIGH

Network-reachable endpoint requiring no login (PR:N) returns full portfolio data (C:H) with no integrity/availability impact; the non-guessable access-ID prerequisite is a practical, not base-metric, limiter.

3.1 AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:N/A:N

4.0 AV:N/AC:L/AT:N/PR:N/UI:N/VC:H/VI:N/VA:N/SC:N/SI:N/SA:N

Primary rating from Vendor (vulncheck).

CVSS VectorVendor: vulncheck

CVSS:4.0/AV:N/AC:L/AT:N/PR:N/UI:N/VC:H/VI:N/VA:N/SC:N/SI:N/SA:N/E:X/CR:X/IR:X/AR:X/MAV:X/MAC:X/MAT:X/MPR:X/MUI:X/MVC:X/MVI:X/MVA:X/MSC:X/MSI:X/MSA:X/S:X/AU:X/R:X/V:X/RE:X/U:X

Attack Vector

Network

Attack Complexity

Low

Privileges Required

None

User Interaction

None

Scope

Lifecycle Timeline

Analysis Generated

Jul 07, 2026 - 19:31 vuln.today

DescriptionCVE.org

The GET /api/v1/public/:accessId/portfolio endpoint in ghostfolio accepts private access IDs without validating granteeUserId filtering, allowing unauthenticated access to full portfolio data. Attackers with a private access ID can retrieve sensitive portfolio information including holdings, quantities, buy prices, and performance metrics without authentication.

AnalysisAI

Unauthorized portfolio data exposure in Ghostfolio's public API allows anyone holding a private access ID to read another user's full portfolio through the GET /api/v1/public/:accessId/portfolio endpoint. The endpoint accepts private access IDs without enforcing the granteeUserId filter, so holdings, quantities, buy prices, and performance metrics are returned without authentication. …

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Attack ChainAIDerived

Hypothetical attack flow derived from CVE metadata

Access

Obtain valid private access ID

Exploit

Send unauthenticated GET to /api/v1/public/:accessId/portfolio

Execution

Endpoint skips granteeUserId authorization check

Impact

Exfiltrate holdings, quantities, buy prices, performance

Access

Obtain valid private access ID

Exploit

Send unauthenticated GET to /api/v1/public/:accessId/portfolio

Execution

Endpoint skips granteeUserId authorization check

Impact

Exfiltrate holdings, quantities, buy prices, performance

Vulnerability AssessmentAI

Exploitation	Exploitation requires the attacker to possess a valid private access ID for the target's Ghostfolio account and to send an unauthenticated HTTP GET to /api/v1/public/:accessId/portfolio; the flaw is that the endpoint does not validate granteeUserId, so no login, session, or being the intended grantee is needed once the ID is held. … Additional conditions and limiting factors are described in the full assessment.
Risk Assessment	The CVSS 4.0 vector (AV:N/AC:L/AT:N/PR:N/UI:N/VC:H) yields 8.7 (High) and reflects network reachability, low complexity, no privileges, and high confidentiality impact with no integrity or availability effect - consistent with a read-only data-exposure bug. … Full risk analysis with EPSS, KEV, and SSVC signal comparison available after sign-in.
Exploit Scenario	An attacker who was previously granted-then revoked-private access to a user's Ghostfolio portfolio, or who obtains a leaked private access ID from a browser history, log, or forwarded link, issues a single unauthenticated GET request to /api/v1/public/<accessId>/portfolio. The server returns the victim's complete holdings, quantities, buy prices, and performance metrics. …
Remediation	Upstream fix available (PR/commit); released patched version not independently confirmed - apply the change in commit 697ef59e3b58bebc5c21a9e482e4f5643390f316 (github.com/ghostfolio/ghostfolio/commit/697ef59e3b58bebc5c21a9e482e4f5643390f316) by upgrading to the tagged Ghostfolio release that includes it once available, tracking github.com/ghostfolio/ghostfolio/issues/7197 and the VulnCheck advisory for the exact version. … Detailed patch versions, workarounds, and compensating controls in full report.

Recommended ActionAI

Within 24 hours: Identify all Ghostfolio instances in production; review API audit logs for suspicious access to the GET /api/v1/public/:accessId/portfolio endpoint; notify affected users. …

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