Is CVE-2026-10732 exploited in the wild?

No. Junglewise Threat Intelligence has no report of CVE-2026-10732 being exploited in the wild.

How severe is CVE-2026-10732?

Medium severity, with a CVSS score of 6.4, published 5 June 2026.

Which products and versions are affected?

Kevin Mårtensson Decompress All versions; decompress (npm) SEMVER:introduced=0,last_affected=4.2.1.

Is there a fix for CVE-2026-10732?

No fixed version is recorded yet. Check the vendor's advisory in the references below. If you run it, Junglewise drafts a mitigation that fits your setup and applies it once you approve, with senior security engineers behind it.

How is CVE-2026-10732 attacked?

It is attacked over the network, in a software library.

Am I affected by CVE-2026-10732?

Check whether you run Kevin Mårtensson Decompress or decompress (npm) at an affected version. Junglewise does that check for you around the clock: connect your code, cloud and domains, and it matches new vulnerabilities like this one against what you actually run and tells you when one reaches you.

CVE-2026-10732: kevva decompress Arbitrary File Write via Zip Slip bypass

CVE-2026-10732 · Severity: medium · CVSS 6.4 · Published 2026-06-05

The 'decompress' library, a popular tool for extracting archive files in JavaScript environments, is vulnerable to a security flaw that allows attackers to write files to unauthorized locations on a server. By providing a specially crafted ZIP file, an attacker can bypass security checks to overwrite system files or plant malicious code. This could lead to a full system takeover or significant operational disruption.

Technologies: Kevin Mårtensson Decompress, decompress (npm). Vendors: Kevin Mårtensson, npm.

Quick answers

Is CVE-2026-10732 exploited in the wild?: No. Junglewise Threat Intelligence has no report of CVE-2026-10732 being exploited in the wild.
How severe is CVE-2026-10732?: Medium severity, with a CVSS score of 6.4, published 5 June 2026.
Which products and versions are affected?: Kevin Mårtensson Decompress All versions; decompress (npm) SEMVER:introduced=0,last_affected=4.2.1.
Is there a fix for CVE-2026-10732?: No fixed version is recorded yet. Check the vendor's advisory in the references below. If you run it, Junglewise drafts a mitigation that fits your setup and applies it once you approve, with senior security engineers behind it.
How is CVE-2026-10732 attacked?: It is attacked over the network, in a software library.
Am I affected by CVE-2026-10732?: Check whether you run Kevin Mårtensson Decompress or decompress (npm) at an affected version. Junglewise does that check for you around the clock: connect your code, cloud and domains, and it matches new vulnerabilities like this one against what you actually run and tells you when one reaches you.

Technical details

A Zip Slip vulnerability exists in the 'decompress' library due to an issue with microtask processing order during archive extraction. When a ZIP archive contains two entries with the same path—the first being a symbolic link and the second a regular file—the library fails to resolve the symlink correctly before processing the second entry. This allows the file content to be written through the symlink to a target location outside the intended output directory. This flaw bypasses existing path traversal protections like 'preventWritingThroughSymlink'. An attacker can achieve arbitrary file writes and potentially remote code execution (RCE) by tricking the library into extracting a malicious archive. No patch is currently available for version 4.2.1.

Affected products

npm decompress <= 4.2.1

Identifiers

CVE-2026-10732
GHSA-h39j-r5qq-r9mm

Timeline

2026-06-05: disclosed
2026-06-05: advisory

References

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