What is the CVSS score of CVE-2023-41471?

CVE-2023-41471 has a CVSS 3.1 base score of 7.8 (High). CVSS vector: CVSS:3.1/AV:L/AC:L/PR:N/UI:R/S:U/C:H/I:H/A:H. EPSS exploitation probability: 0.0%.

Which versions of Copyparty are affected by CVE-2023-41471?

Organizations using copyparty face notable risk from CVE-2023-41471, a cross-site scripting vulnerability rated CVSS 7.8.

Is there a public PoC exploit available for CVE-2023-41471?

Yes, a public proof-of-concept exploit is available for CVE-2023-41471. Prioritise patching immediately. EPSS: 0.0%.

How to fix or mitigate CVE-2023-41471?

Within 7 days: Identify all affected systems running copyparty and apply vendor patches promptly. Verify anti-CSRF tokens and content security policies are enforced.

Copyparty CVE-2023-41471

HIGH

Cross-site Scripting (XSS) (CWE-79)

2025-08-29 cve@mitre.org

RCE XSS Copyparty

7.8

CVSS 3.1 · NVD

Severity by source

NVD PRIMARY

7.8 HIGH

AV:L/AC:L/PR:N/UI:R/S:U/C:H/I:H/A:H

Primary rating from NVD · only source for this CVE.

CVSS VectorNVD

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

Attack Vector

Local

Attack Complexity

Low

Privileges Required

None

User Interaction

Required

Scope

Unchanged

Confidentiality

High

Integrity

High

Availability

High

Lifecycle Timeline

Analysis Generated

Mar 28, 2026 - 19:09 vuln.today

PoC Detected

Nov 03, 2025 - 06:15 vuln.today

Public exploit code

CVE Published

Aug 29, 2025 - 19:15 nvd

HIGH 7.8

DescriptionCVE.org

Cross Site Scripting vulnerability in copyparty before 1.9.2 allows a local attacker to execute arbitrary code via a crafted payload to the WEEKEND-PLANS function. NOTE: this is disputed because WEEKEND-PLANS is accessible only to actors who already have write access to the server, and they can more simply upload HTML files containing JavaScript.

AnalysisAI

Cross Site Scripting vulnerability in copyparty before 1.9.2 allows a local attacker to execute arbitrary code via a crafted payload to the WEEKEND-PLANS function. Rated high severity (CVSS 7.8), this vulnerability is no authentication required, low attack complexity. Public exploit code available and no vendor patch available.

Technical ContextAI

This vulnerability is classified as Cross-Site Scripting (XSS) (CWE-79), which allows attackers to inject malicious scripts into web pages viewed by other users. Cross Site Scripting vulnerability in copyparty before 1.9.2 allows a local attacker to execute arbitrary code via a crafted payload to the WEEKEND-PLANS function. NOTE: this is disputed because WEEKEND-PLANS is accessible only to actors who already have write access to the server, and they can more simply upload HTML files containing JavaScript. Affected products include: 9001 Copyparty. Version information: before 1.9.2.

RemediationAI

No vendor patch is available at time of analysis. Monitor vendor advisories for updates. Sanitize all user input, use Content-Security-Policy headers, encode output contextually (HTML, JS, URL). Use frameworks with built-in XSS protection.