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Public proof of conceptFix available

CVE-2025-54796

A public proof of concept exists; no exploitation attested.

  • Published2025-08-02
  • Fixed in1.18.9
  • WeaknessCWE-1333 · CWE-400 · CWE-833

Am I affected?

With a domain, we read the version its public headers and pages expose. A distribution build can carry the fix under an older number.

Description

Copyparty is a portable file server. Versions prior to 1.18.9, the filter parameter for the "Recent Uploads" page allows arbitrary RegExes. If this feature is enabled (which is the default), an attacker can craft a filter which deadlocks the server. This is fixed in version 1.18.9.

Timeline

dates in UTC
  1. 2025-08-0200:15CVE publishedNVD

Observed activity

isMalicious corpus · updated 2026-11-03 21:37 UTC
Indicators tagged with this CVE, per day0 indicators over 7 days
Block these indicators
  • Firewall list (EDL, text): https://api.ismalicious.com/edl/cve/CVE-2025-54796?format=txt
  • CSV export: https://api.ismalicious.com/edl/cve/CVE-2025-54796?format=csv
  • TAXII collection of exploited CVEs
  • The EDL and CSV take an API key on the Pro plan.

Versions per branch

NVD · OSV
9001 copyparty
BranchAffectedFixed in
1.18< 1.18.91.18.9

as publishedRanges as NVD and OSV publish them; a distribution’s build can be fixed under an older number.

Products declared by the CNA1 product

As GitHub_M, the CNA that assigned this CVE, declared them in the CVE record; versions as written.

  • 9001 copyparty
    Affected
    • = < 1.18.9no fix stated

Source: the CNA record (CVE Program), © The MITRE Corporation,CVE Terms of UseCVE recordupdated 2025-08-01

Fix

  1. Update 9001 copyparty to 1.18.9

Advisories and patches

Detection

Nuclei template
none so far
ProjectDiscovery
Exploit-DB
no entry
Exploit-DB
Proof-of-concept repositories
none listed
PoC-in-GitHub
Metasploit modules
none listed
Metasploit Framework

Sources

  • NVDCVE recordread 2026-10-23
  • CISA-ADPSSVC decisionpoc2025-08-04
  • OpenCVESSVC decisionpoc—
  • CNACVSS 3.17.5known since 2026-10-23
  • CNAweakness (CWE)CWE-1333, CWE-400, CWE-833known since 2026-10-23
  • FIRST EPSSEPSS score0.5 %2026-11-03
  • OSVaffected packages—
  • GitHub AdvisoriesadvisoryHIGH2025-08-04

Identifiers

Technical details

CVSS v3 Vector
CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H
Published
2025-08-02
Last Modified
2026-06-17
NVD status
Analyzed
GitHub Advisory
GHSA-5662-2rj7-f2v6

Frequently asked questions

What is CVE-2025-54796?

Copyparty is a portable file server. Versions prior to 1.18.9, the filter parameter for the "Recent Uploads" page allows arbitrary RegExes. If this feature is enabled (which is the default), an attacker can craft a filter which deadlocks the server. This is fixed in version 1.18.9.

Is CVE-2025-54796 actively exploited?

A proof-of-concept exploit exists for CVE-2025-54796, but active exploitation has not been confirmed at this time.

What is the CVSS score for CVE-2025-54796?

CVE-2025-54796 has a CVSS v3 base score of 7.5 (HIGH severity), with vector string CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H.

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Sources for this record