CVE-2023-37474Public exploitNetwork attack vector

Unauthenticated file disclosure via .cpr path traversal

Published Jul 14, 2023 · Updated Feb 13, 2025

Path traversal in copyparty before 1.8.2 allows remote attackers to read process-accessible files through crafted /.cpr/ requests. The HTTP GET handler joined the untrusted path suffix to its web directory and sent the result without canonicalizing it or enforcing containment. Exploitation requires no authentication but requires the target file's absolute or installation-relative path; directory listing is unavailable, and OS permissions bound disclosure.

CVSS severity7.5
High
EPSS probability44.92%
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 copyparty before 1.8.2 allows remote attackers to read process-accessible files through crafted /.cpr/ requests. The HTTP GET handler joined the untrusted path suffix to its web directory and sent the result without canonicalizing it or enforcing containment. Exploitation requires no authentication but requires the target file's absolute or installation-relative path; directory listing is unavailable, and OS permissions bound disclosure.

The record

CVE
CVE-2023-37474
Published
Jul 14, 2023
Updated
Feb 13, 2025
Vendor
copyparty
Product
copyparty
Classifications
CWE-22, T1190
Attack vector
network
Privileges
unauthenticated

Timeline

How it unfolded

  1. Jul 14, 2023CVE publishedPublication date reported by the CVE source.
  2. Feb 13, 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 <1.8.2
  2. Affected versionversion=< 1.8.2

What conditions does exploitation require?

Attack vectornetwork
Required privilegesunauthenticated

What is affected?

copyparty · copypartyversion=0 <1.8.2; version=< 1.8.2

Published CVSS scores

7.5GitHubCVSS:3.0/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:N/A:N
7.5NIST NVDCVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:N/A:N

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 exploitPublished

Weakness, pattern, technique

CWE-22Improper Limitation of a Pathname to a Restricted Directory ('Path Traversal')
T1190Exploit Public-Facing Application

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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