CVE-2023-28105Network attack vector

File write via unsanitized ZIP entry paths

Published Mar 16, 2023 · Updated Feb 25, 2025

Path traversal in Cyan before 0.0.34 allows remote attackers to write files outside the destination via a crafted ZIP archive. The zip.Unzip helper joins each archive entry name directly to the destination path, allowing ../ segments to reach parent directories. Callers must pass an attacker-supplied archive to zip.Unzip; successful exploitation creates or overwrites files with the consuming process's permissions.

CVSS severity8.8
High
EPSS probability0.61%
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 Cyan before 0.0.34 allows remote attackers to write files outside the destination via a crafted ZIP archive. The zip.Unzip helper joins each archive entry name directly to the destination path, allowing ../ segments to reach parent directories. Callers must pass an attacker-supplied archive to zip.Unzip; successful exploitation creates or overwrites files with the consuming process's permissions.

The record

CVE
CVE-2023-28105
Published
Mar 16, 2023
Updated
Feb 25, 2025
Vendor
dablelv
Product
Cyan
Classifications
CWE-22
Attack vector
network
Privileges
unauthenticated

Timeline

How it unfolded

  1. Mar 16, 2023CVE publishedPublication date reported by the CVE source.
  2. Feb 25, 2025Record updatedLatest update available in the CVE record.

Exploitability

Present is not the same as exploitable

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Is a vulnerable build present?

Compare these published version ranges with your installed build and any vendor patches.

  1. Affected versionversion=< 0.0.34

What conditions does exploitation require?

Attack vectornetwork
Required privilegesunauthenticated

What is affected?

dablelv · Cyanversion=< 0.0.34

Published CVSS scores

8.8GitHub, Inc.CVSS:3.1/AV:N/AC:L/PR:N/UI:R/S:C/C:L/I:H/A:L
8.8NIST NVDCVSS:3.1/AV:N/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.

Daily unique IPsNo honeypot observations are available for this CVE in the selected window.

No observations available

Sep 10, 2026Sep 16, 2026
Latest reporting daySep 16, 2026
Latest daily unique IPsUnavailable
Prior 30-day averageUnavailable
SourceShadowserver honeypots (KEV)
Vectornetwork
Privilegesunauthenticated
Known exploitationUnconfirmed
Public exploitUnconfirmed

Weakness, pattern, technique

CWE-22Improper Limitation of a Pathname to a Restricted Directory ('Path Traversal')

Public exploit references

No public exploit references are available in this record.

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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