# CVE-2026-41082: Path traversal in opam

> An attacker can write files to arbitrary locations outside the intended directory via path traversal in opam install fields.

- **Severity:** High 7.3 (`CVSS:3.1/AV:L/AC:L/PR:N/UI:N/S:U/C:L/I:H/A:L`)
- **Exploited in the wild:** Not known
- **Login needed:** Not needed
- **Attackable:** Local or same network only
- **Victim action needed:** Not needed
- **Fix available:** Yes
- **Published:** 16 Apr 2026
- **Updated:** 15 Jul 2026
- **Also known as:** DEBIAN-CVE-2026-41082, GHSA-97q5-qf47-hvrw, MGASA-2026-0116, OSEC-2026-03, UBUNTU-CVE-2026-41082, USN-8256-1, openSUSE-SU-2026:10568-1

## What is CVE-2026-41082?

CVE-2026-41082 is a high-severity path traversal vulnerability in Debian Debian Linux, published on 16 Apr 2026. It can only be exploited from the same machine or local network, with no action from the victim.

### Official description

In OCaml opam before 2.5.1, a .install field containing a destination filepath can use ../ to reach a parent directory.

Weakness: CWE-22 (Improper Limitation of a Pathname to a Restricted Directory), CWE-24 (Path Traversal: '../filedir')

## Which versions are affected by CVE-2026-41082?

It affects 3 products.


| Package | Ecosystem | Affected | Fixed in |
| --- | --- | --- | --- |
| `opam` | openSUSE:Tumbleweed | All versions | 2.5.1-1.1 |

Products: Debian Debian Linux, Ocaml Opam, Redhat Enterprise Linux.

## How do I fix CVE-2026-41082?

Upgrade to a fixed version.

## Is CVE-2026-41082 being exploited?

It is not confirmed as exploited in the wild, but public exploit code for CVE-2026-41082 exists.

## Other vulnerabilities in Debian Debian Linux

- [CVE-2015-3306](https://insights.sbomify.com/CVE-2015-3306/): ProFTPD Improper Access Control (critical 10.0, exploited in the wild)
- [CVE-2025-49113](https://insights.sbomify.com/CVE-2025-49113/): RoundCube Webmail Deserialization of Untrusted Data (critical 9.9, exploited in the wild)
- [CVE-2026-24061](https://insights.sbomify.com/CVE-2026-24061/): GNU InetUtils Argument Injection (critical 9.8, exploited in the wild)
- [CVE-2025-39682](https://insights.sbomify.com/CVE-2025-39682/): Linux Kernel Improper Check for Unusual or Exceptional Conditions (critical 9.8, exploited in the wild)
- [CVE-2024-9680](https://insights.sbomify.com/CVE-2024-9680/): Mozilla Firefox Use-After-Free (critical 9.8, exploited in the wild)

## Fix prompt for AI coding agents

```text
Check this codebase for CVE-2026-41082 and fix it if it is affected.

What it is: CVE-2026-41082 is a high-severity path traversal vulnerability in Debian Debian Linux, published on 16 Apr 2026. It can only be exploited from the same machine or local network, with no action from the victim.
Exploitation: It is not confirmed as exploited in the wild, but public exploit code for CVE-2026-41082 exists.

Affected product: Debian Debian Linux. 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-2026-41082/ (Markdown: https://insights.sbomify.com/CVE-2026-41082/index.md)
```

## Sources

- CVE record: https://www.cve.org/CVERecord?id=CVE-2026-41082
- NVD: https://nvd.nist.gov/vuln/detail/CVE-2026-41082
- OSV: https://osv.dev/vulnerability/CVE-2026-41082

---
From sbomify Insights: https://insights.sbomify.com/CVE-2026-41082/
Summaries are generated and may contain mistakes; the official description above is the record.