PT-2025-7809 · Copyparty · Copyparty

Jaypatel48 · Published 2025-02-25 · Updated 2025-02-26 · CVE-2025-27145

Positive Technologies (AI Summary)

CVSS v3.1

6.1

Medium

Base vector

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

Name of the Vulnerable Software and Affected Versions copyparty versions prior to 1.16.15

Description The issue is a DOM-based cross-site scripting vulnerability. It can be triggered by handing someone a maliciously-named file and then tricking them into dragging the file into copyparty's Web-UI. This could allow an attacker to execute arbitrary javascript with the same privileges as that user, potentially giving unintended read-access to files owned by that user. The bug is triggered by the drag-drop action itself and requires an empty (zero bytes) file.

Recommendations For versions prior to 1.16.15, update to version 1.16.15 or later to resolve the issue. As a temporary workaround, consider restricting access to the Web-UI or avoiding the use of drag-and-drop functionality with untrusted files.

Exploit

Fix

XSS

Weakness Enumeration

CWE-83

CWE-79

Related Identifiers

CVE-2025-27145

GHSA-M2JW-CJ8V-937R

Affected Products

Copyparty

References · 11

• 🔥 https://github.com/9001/copyparty/security/advisories/GHSA-m2jw-cj8v-937r · Exploit
• 🔥 https://github.com/CVEProject/cvelistV5/tree/main/cves/2025/27xxx/CVE-2025-27145.json · Exploit
• https://github.com/9001/copyparty/commit/438ea6ccb06f39d7cbb4b6ee7ad44606e21a63dd · Patch
• https://osv.dev/vulnerability/GHSA-m2jw-cj8v-937r · Vendor Advisory
• https://nvd.nist.gov/vuln/detail/CVE-2025-27145 · Security Note
• https://osv.dev/vulnerability/CVE-2025-27145 · Vendor Advisory
• https://github.com/9001/copyparty · Note
• https://github.com/9001/copyparty/releases/tag/v1.16.15 · Note
• https://twitter.com/WolfgangSesin/status/1894252256330936566 · Twitter Post
• https://twitter.com/VulmonFeeds/status/1894218022568460739 · Twitter Post
• https://t.me/cvedetector/18848 · Telegram Post