# CVE-2026-29059: Windmill: SUPERADMIN_SECRET (rarely used) can be accessed publicly

> An unauthenticated path traversal in Windmill allows attackers to read arbitrary server files, including sensitive secrets, via the get_log_file endpoint.

- **Severity:** Medium 6.9 (`CVSS:4.0/AV:N/AC:L/AT:N/PR:N/UI:N/VC:L/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:** 6 Mar 2026
- **Updated:** 7 Apr 2026
- **Also known as:** GHSA-24fr-44f8-fqwg

## What is CVE-2026-29059?

CVE-2026-29059 is a medium-severity path traversal vulnerability in windmill-labs windmill, published on 6 Mar 2026. An attacker can exploit it over the internet without logging in, with no action from the victim.

### Official description

Windmill is an open-source developer platform for internal code: APIs, background jobs, workflows and UIs. Prior to version 1.603.3, an unauthenticated path traversal vulnerability exists in Windmill's get_log_file endpoint "(/api/w/{workspace}/jobs_u/get_log_file/{filename})". The filename parameter is concatenated into a file path without sanitization, allowing an attacker to read arbitrary files on the server using ../ sequences. This issue has been patched in version 1.603.3.

Weakness: CWE-22 (Improper Limitation of a Pathname to a Restricted Directory)

## Which versions are affected by CVE-2026-29059?

It affects 1 product.


Products: Windmill Windmill.

## How do I fix CVE-2026-29059?

No fix has been published for CVE-2026-29059 yet. Limit exposure of the affected software until one is available.

## Is CVE-2026-29059 being exploited?

It is not confirmed as exploited in the wild, but public exploit code for CVE-2026-29059 exists.

Public exploit code:

- Windfall - Unauthenticated RCE exploit chain for Windmill & Nextcloud Flow (CVE-2026-29059). Path traversal + credential leak + PostgreSQL heap dump + Nextcloud AppAPI takeover. (github_poc): https://github.com/Chocapikk/Windfall
- Windmill/Nextcloud Flow < 1.603.3 - Unauthenticated Path Traversal (nuclei): http/cves/2026/CVE-2026-29059.yaml

## Other vulnerabilities in windmill-labs windmill

- [CVE-2026-33881](https://insights.sbomify.com/CVE-2026-33881/): Code injection in windmill (high 7.3)
- [CVE-2026-26964](https://insights.sbomify.com/CVE-2026-26964/): Windmill Exposes Workspace Slack OAuth Client Secrets to Non-Admin Workspace Members (low 2.7)

## Fix prompt for AI coding agents

```text
Check this codebase for CVE-2026-29059 and fix it if it is affected.

What it is: CVE-2026-29059 is a medium-severity path traversal vulnerability in windmill-labs windmill, published on 6 Mar 2026. An attacker can exploit it over the internet without logging in, with no action from the victim.
Exploitation: It is not confirmed as exploited in the wild, but public exploit code for CVE-2026-29059 exists.

Affected product: windmill-labs windmill. 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-2026-29059/ (Markdown: https://insights.sbomify.com/CVE-2026-29059/index.md)
```

## Sources

- CVE record: https://www.cve.org/CVERecord?id=CVE-2026-29059
- NVD: https://nvd.nist.gov/vuln/detail/CVE-2026-29059
- OSV: https://osv.dev/vulnerability/CVE-2026-29059

---
From sbomify Insights: https://insights.sbomify.com/CVE-2026-29059/
Summaries are generated and may contain mistakes; the official description above is the record.