CVE-2023-39138Public exploit

Filesystem path escape via uncontained symlink extraction

Published Aug 30, 2023 · Updated Oct 2, 2024

Path traversal in ZIPFoundation 0.9.17 and earlier allows attackers to escape the extraction directory through a crafted ZIP archive. The symlink extraction branch passes an archive entry's link target directly to FileManager.createSymbolicLink without checking whether it remains within the destination directory. A victim must extract the crafted archive; the resulting link redirects filesystem access outside the intended destination under the host process's permissions.

CVSS severity7.8
High
EPSS probability0.41%
Next 30 days · Sep 16, 2026
Known exploitationUnconfirmed
Based on sourced intelligence
Hinoki checkNot available
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Summary

What happened

Path traversal in ZIPFoundation 0.9.17 and earlier allows attackers to escape the extraction directory through a crafted ZIP archive. The symlink extraction branch passes an archive entry's link target directly to FileManager.createSymbolicLink without checking whether it remains within the destination directory. A victim must extract the crafted archive; the resulting link redirects filesystem access outside the intended destination under the host process's permissions.

The record

CVE
CVE-2023-39138
Published
Aug 30, 2023
Updated
Oct 2, 2024
Vendor
Unknown vendor
Product
Unknown product
Classifications
CWE-22, T1204.002
Attack vector
local
Privileges
unauthenticated

Timeline

How it unfolded

  1. Aug 30, 2023CVE publishedPublication date reported by the CVE source.
  2. Oct 2, 2024Record updatedLatest update available in the CVE record.

Exploitability

Present is not the same as exploitable

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Is a vulnerable build present?

Affected buildAffected product and version details are unavailable.

What conditions does exploitation require?

Attack vectorlocal
Required privilegesunauthenticated

What is affected?

Affected products and versions are unavailable in this record.

Published CVSS scores

7.8NIST NVDCVSS:3.1/AV:L/AC:L/PR:N/UI:R/S:U/C:H/I:H/A:H

CVSS describes severity. EPSS estimates exploitation probability.

Attacks

What attackers are doing with it

Daily unique IPs observed by Shadowserver honeypots for known exploited vulnerabilities (KEVs). Missing observations do not establish an absence of attacks.

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No observations available

Sep 9, 2026Sep 15, 2026
Latest reporting daySep 15, 2026
Latest daily unique IPsUnavailable
Prior 30-day averageUnavailable
SourceShadowserver honeypots (KEV)
Vectorlocal
Privilegesunauthenticated
Known exploitationUnconfirmed
Public exploitPublished

Weakness, pattern, technique

CWE-22Improper Limitation of a Pathname to a Restricted Directory ('Path Traversal')
T1204.002Malicious File

Public exploit references

Labels summarize the accepted research assessment. They do not indicate a test against your environment.

Technologies

Your stack

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Your stack

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