What is CVE-2026-32109?

CVE-2026-32109 is a low-severity vulnerability in 9001 Copyparty, classified under Cross-site Scripting. CVSS score: 3.7/10. Published 2026-03-11.

How severe is CVE-2026-32109?

Low severity. CVSS v3 base score is 3.7 out of 10.

XSS in 9001 Copyparty

CVE-2026-32109

Copyparty is a portable file server. Prior to 1.20.12, if an attacker has been given both read- and write-permissions to the server, they can upload a malicious file with the filename .prologue.html and then craft a link to potentially exe…

Vulnerability class: XSS (Cross-Site Scripting)

EPSS: 0.000 (1.3th percentile) — read the EPSS interpretation.

CVSS v3 metric

CVSS v3 base score 3.7 (Low). Vector: CVSS:3.1/AV:N/AC:H/PR:L/UI:R/S:U/C:L/I:L/A:N.

Affected products

9001 Copyparty — versions < 1.20.12

Weakness classification (CWE)

CWE-79 — Cross-site Scripting

References

https://github.com/9001/copyparty/security/advisories/GHSA-rcp6-88mm-9vgf (x_refsource_CONFIRM)

Frequently asked questions

What is CVE-2026-32109?: CVE-2026-32109 is a low-severity vulnerability in 9001 Copyparty, classified under Cross-site Scripting. CVSS score: 3.7/10. Published 2026-03-11.
How severe is CVE-2026-32109?: Low severity. CVSS v3 base score is 3.7 out of 10.