# CVE-2026-10732: decompress: Arbitrary File Write via Archive Extraction (Zip Slip)

> Attackers can write arbitrary files outside the extraction directory via crafted ZIP archives, potentially leading to remote code execution.

- **Severity:** Medium 6.1 (`CVSS:4.0/AV:N/AC:L/AT:P/PR:N/UI:P/VC:L/VI:H/VA:L/SC:N/SI:N/SA:N/E:P`)
- **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:** Yes
- **Published:** 5 Jun 2026
- **Updated:** 7 Sep 2026
- **Also known as:** GHSA-h39j-r5qq-r9mm, MINI-5fg6-mmvf-52p9, MINI-crcw-97gr-4c89, MINI-pqc9-6739-33fp

## What is CVE-2026-10732?

CVE-2026-10732 is a medium-severity path traversal vulnerability in decompress, published on 5 Jun 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

All versions of the package decompress are vulnerable to Arbitrary File Write via Archive Extraction (Zip Slip) when extracting a ZIP archive containing two entries with the same path - the first being a symlink to an arbitrary target and the second being a regular file - the file content is written through the symlink to the target location outside the output directory. This is due to the microtask processing order that checks readlink for the second file before resolving symlink for the first file. An attacker can write arbitrary file on the host filesystem potentially leading to remote code execution by providing a specially crafted ZIP archive.

**Note:**

This bypasses all existing path traversal protections including preventWritingThroughSymlink, added as a part of the fix for [CVE-2020-12265](https://security.snyk.io/vuln/SNYK-JS-DECOMPRESS-557358).

Weakness: CWE-22 (Improper Limitation of a Pathname to a Restricted Directory), CWE-29 (Path Traversal: '\..\filename')

## Which versions are affected by CVE-2026-10732?

2 open source packages ship an affected version, including decompress.


| Package | Ecosystem | Affected | Fixed in |
| --- | --- | --- | --- |
| `decompress` | npm | All versions to 4.2.1 | None |
| `decompress` | npm | All versions to 4.2.1 | None |

## How do I fix CVE-2026-10732?

Apply the vendor's patch.

## Is CVE-2026-10732 being exploited?

There is no known exploitation of CVE-2026-10732 in the wild and no public exploit code.

## Fix prompt for AI coding agents

```text
Check this codebase for CVE-2026-10732 and fix it if it is affected.

What it is: CVE-2026-10732 is a medium-severity path traversal vulnerability in decompress, published on 5 Jun 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: There is no known exploitation of CVE-2026-10732 in the wild and no public exploit code.

Affected packages and fixed versions:
- decompress (npm): affected all versions up to 4.2.1; no fix listed
- decompress (npm): affected all versions up to 4.2.1; no fix listed

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-2026-10732/ (Markdown: https://insights.sbomify.com/CVE-2026-10732/index.md)
```

## Sources

- CVE record: https://www.cve.org/CVERecord?id=CVE-2026-10732
- NVD: https://nvd.nist.gov/vuln/detail/CVE-2026-10732
- OSV: https://osv.dev/vulnerability/CVE-2026-10732

---
From sbomify Insights: https://insights.sbomify.com/CVE-2026-10732/
Summaries are generated and may contain mistakes; the official description above is the record.