# CVE-2026-85665: Bruno through 4.1.0 Arbitrary File Read via Unconfined Body File Path

> Attackers can read arbitrary local files by crafting malicious request body paths in Bruno API client collections.

- **Severity:** High 7.1 (`CVSS:4.0/AV:N/AC:L/AT:N/PR:N/UI:P/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:** A user has to click or open something
- **Fix available:** No
- **Published:** 4 Sep 2026
- **Updated:** 5 Sep 2026
- **Also known as:** GHSA-c887-2p5m-25wx

## What is CVE-2026-85665?

CVE-2026-85665 is a high-severity path traversal vulnerability in usebruno bruno, published on 4 Sep 2026. An attacker can exploit it over the internet without logging in, and only if a user opens a file or follows a link.

### Official description

Bruno versions through 4.1.0 fail to validate file paths in request body declarations, allowing attackers to read arbitrary local files by using parent-directory traversal segments. When a collection is executed, attackers can craft a request with a body:file path containing ../ sequences that resolve outside the collection directory, causing the application to read and exfiltrate arbitrary files to attacker-controlled endpoints.

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

## Which versions are affected by CVE-2026-85665?


## How do I fix CVE-2026-85665?

No fix has been published for CVE-2026-85665 yet. Limit exposure of the affected software until one is available.

## Is CVE-2026-85665 being exploited?

It is not confirmed as exploited in the wild, but public exploit code for CVE-2026-85665 exists.

## Fix prompt for AI coding agents

```text
Check this codebase for CVE-2026-85665 and fix it if it is affected.

What it is: CVE-2026-85665 is a high-severity path traversal vulnerability in usebruno bruno, published on 4 Sep 2026. An attacker can exploit it over the internet without logging in, and only if a user opens a file or follows a link.
Exploitation: It is not confirmed as exploited in the wild, but public exploit code for CVE-2026-85665 exists.

Affected product: usebruno bruno. 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-2026-85665/ (Markdown: https://insights.sbomify.com/CVE-2026-85665/index.md)
```

## Sources

- CVE record: https://www.cve.org/CVERecord?id=CVE-2026-85665
- NVD: https://nvd.nist.gov/vuln/detail/CVE-2026-85665
- OSV: https://osv.dev/vulnerability/CVE-2026-85665

---
From sbomify Insights: https://insights.sbomify.com/CVE-2026-85665/
Summaries are generated and may contain mistakes; the official description above is the record.