CVE-2025-27145: copyparty renders unsanitized filenames as HTML when user uploads empty files

February 26, 2025

A DOM-Based XSS was discovered in copyparty, a portable fileserver. The vulnerability is considered low-risk.

References

github.com/9001/copyparty
github.com/9001/copyparty/commit/438ea6ccb06f39d7cbb4b6ee7ad44606e21a63dd
github.com/9001/copyparty/releases/tag/v1.16.15
github.com/9001/copyparty/security/advisories/GHSA-m2jw-cj8v-937r
github.com/advisories/GHSA-m2jw-cj8v-937r
nvd.nist.gov/vuln/detail/CVE-2025-27145

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