mholt/archiver Vulnerable to Path Traversal via Crafted ZIP File

Exploitation

No confirmed exploitation recorded. Patch Next marks exploitation only from CISA KEV.

CVSS

8.1 · CVSS:3.1/AV:N/AC:H/PR:N/UI:N/S:C/C:L/I:H/A:L

EPSS

• CVE-2025-3445: 0.51% estimated exploitation activity in the next 30 days; percentile 43.48 (FIRST EPSS, 2026-11-03). This is a model estimate, not proof of exploitation or customer exposure.

As published by the source; long descriptions are shortened.

A Path Traversal "Zip Slip" vulnerability has been identified in mholt/archiver in Go. This vulnerability allows using a crafted ZIP file containing path traversal symlinks to create or overwrite files with the user's privileges or application utilizing the library. When using the archiver.Unarchive functionality with ZIP files, like this: archiver.Unarchive(zipFile, outputDir), A crafted ZIP file can be extracted in such a way that it writes files to the affected system with the same privileges as the application executing this vulnerable functionality. Consequently, sensitive files may be overwritten, potentially leading to privilege escalation, code execution, and other severe outcomes in some cases. It's worth noting that a similar vulnerability was found in TAR files (CVE-2024-0406). Although a fix was implemented, it hasn't been officially released, and the affected project has since been deprecated. The successor to mholt/archiver is a new project called mholt/archives, and…

Published by the source

14 Apr 2025, 00:30 UTC

Last modified by the source

14 Apr 2025, 17:56 UTC

Source last checked

26 Oct 2026, 15:09 UTC

1. Revision 1 · created · 26 Oct 2026

   Published from ghsa record GHSA-7vpp-9cxj-q8gv

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# Patch Next advisory brief: CVE-2025-3445

Advisory: mholt/archiver Vulnerable to Path Traversal via Crafted ZIP File
IDs: CVE-2025-3445, GHSA-7vpp-9cxj-q8gv
Record: https://patchnext.com/advisories/cve-2025-3445 (revision 1, source checked 26 Oct 2026, 15:09 UTC)
Inventory: none attached. This brief comes from a public page and does not say whether any deployment is affected.
Severity: High (CVSS 8.1)
Exploitation: no confirmed exploitation recorded. Patch Next confirms exploitation only from CISA KEV.
Vendor response: Vendor response not established. A vendor fix does not mean a deployment is fixed.

## Affected components
- Go github.com/mholt/archiver/v3: affected <= 3.5.1
- Go github.com/mholt/archiver: affected <= 3.5.1

## Suggested inspection (read-only)
- Go github.com/mholt/archiver/v3: check the installed version with your package manager.
- Go github.com/mholt/archiver: check the installed version with your package manager.

## Supported action
No complete vendor fix is recorded. Follow the primary source's mitigation guidance and check this record again before closing anything.

## Required regression checks
- Run the test suite and a production build.
- Exercise the features that depend on github.com/mholt/archiver/v3, github.com/mholt/archiver.
- Repeat the inspection and confirm that only fixed versions remain installed.

## Rollback considerations
- Keep the previous lockfile and deployment artifact. Rolling back reinstates the vulnerable version, so apply any documented mitigation while you fix forward.

## Unresolved questions
- Which deployments run an affected version?
- Exploitation status can change. Check again before lowering the priority.
- Mark the work resolved only after the fixed version is verified in production.

## Sources
- Verified: https://github.com/advisories/GHSA-7vpp-9cxj-q8gv (GitHub-reviewed advisory GHSA-7vpp-9cxj-q8gv lists affected ranges: Go github.com/mholt/archiver >=0 =0 <=3.5.1)

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