Auth bypass in 9001 Copyparty
CVE-2025-58753
Copyparty is a portable file server. In versions prior to 1.19.8, there was a missing permission-check in the shares feature (the `shr` global-option). When a share was created for just one file inside a folder, it was possible to access the other files inside that folder by guessing the filenames. It was not possible to descend into subdirectories in this manner; only the sibling files were accessible. This issue did not affect filekeys or dirkeys. Version 1.19.8 fixes the issue.
EPSS: 0.004 (29.9th percentile) — read the EPSS interpretation.
CVSS v3 metric
CVSS v3 base score 7.5 (High). Vector: CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:N/A:N.
Affected products
- 9001 Copyparty — versions < 1.19.8
Weakness classification (CWE)
References
- security-advisories@github.com (x_refsource_CONFIRM, Vendor Advisory)
- security-advisories@github.com (Patch, x_refsource_MISC)
- security-advisories@github.com (x_refsource_MISC, Release Notes)
Frequently asked questions
- What is CVE-2025-58753?
- CVE-2025-58753 is a high-severity vulnerability in 9001 Copyparty, classified under Files or Directories Accessible to External Parties. CVSS score: 7.5/10. Published 2025-09-09.
- How severe is CVE-2025-58753?
- High severity. CVSS v3 base score is 7.5 out of 10.