# CVE-2026-59708: Ghostfolio - Unauthorized Portfolio Data Exposure via Public Endpoint

> Unauthenticated attackers with a private access ID can retrieve sensitive portfolio data due to missing authorization checks on a public endpoint.

- **Severity:** High 8.7 (`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`)
- **Exploited in the wild:** Not known
- **Login needed:** Not needed
- **Attackable:** Over the internet
- **Victim action needed:** Not needed
- **Fix available:** No
- **Published:** 7 Jul 2026
- **Updated:** 24 Sep 2026
- **Also known as:** GHSA-fqj2-r74g-4gfp

## What is CVE-2026-59708?

CVE-2026-59708 is a high-severity missing authorization vulnerability in ghostfolio, published on 7 Jul 2026. An attacker can exploit it over the internet without logging in, with no action from the victim.

### Official description

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.

Weakness: CWE-862 (Missing Authorization)

## Which versions are affected by CVE-2026-59708?


## How do I fix CVE-2026-59708?

No fix has been published for CVE-2026-59708 yet. Limit exposure of the affected software until one is available.

## Is CVE-2026-59708 being exploited?

There is no known exploitation of CVE-2026-59708 in the wild and no public exploit code.

## Fix prompt for AI coding agents

```text
Check this codebase for CVE-2026-59708 and fix it if it is affected.

What it is: CVE-2026-59708 is a high-severity missing authorization vulnerability in ghostfolio, published on 7 Jul 2026. An attacker can exploit it over the internet without logging in, with no action from the victim.
Exploitation: There is no known exploitation of CVE-2026-59708 in the wild and no public exploit code.

Affected product: ghostfolio. No package-level version data is available, so check the vendor advisory linked from the reference page.

Task:
1. Search the dependency manifests and lockfiles (for example package.json, package-lock.json, requirements.txt, poetry.lock, uv.lock, pom.xml, build.gradle, go.mod, Cargo.lock, Gemfile.lock) and any Dockerfiles for the affected packages, including transitive dependencies.
2. If an affected version is in use, upgrade it to the fixed version for its release line with the project's package manager, so the lockfile is regenerated. Prefer the smallest upgrade that fixes it.
3. If there is no fix, or the upgrade would break the build, do not guess: explain the risk and the safest workaround instead.
4. Run the tests and summarise what changed and why.
5. If nothing in the project is affected, say so and change nothing.

Reference: https://insights.sbomify.com/CVE-2026-59708/ (Markdown: https://insights.sbomify.com/CVE-2026-59708/index.md)
```

## Sources

- CVE record: https://www.cve.org/CVERecord?id=CVE-2026-59708
- NVD: https://nvd.nist.gov/vuln/detail/CVE-2026-59708
- OSV: https://osv.dev/vulnerability/CVE-2026-59708

---
From sbomify Insights: https://insights.sbomify.com/CVE-2026-59708/
Summaries are generated and may contain mistakes; the official description above is the record.