CVE-2025-27145: PYSEC-2026-1278 - copyparty renders unsanitized filenames as HTML when user uploads empty files

CVE-2025-27145 · Severity: low · CVSS 3.1 · Published 2026-07-07

copyparty renders unsanitized filenames as HTML when user uploads empty files

Technologies: copyparty (PyPI). Vendors: PyPI.

Quick answers

Is CVE-2025-27145 exploited in the wild?
No. Junglewise Threat Intelligence has no report of CVE-2025-27145 being exploited in the wild.
How severe is CVE-2025-27145?
Low severity, with a CVSS score of 3.1, published 7 July 2026.
Which products and versions are affected?
copyparty (PyPI) ECOSYSTEM:introduced=0,fixed=1.16.15.
Is there a fix for CVE-2025-27145?
Yes. copyparty (PyPI): upgrade to 1.16.15 or later. Junglewise finds every place you run it, drafts the upgrade and applies it once you approve.
Am I affected by CVE-2025-27145?
Check whether you run copyparty (PyPI) at an affected version. Junglewise does that check for you around the clock: connect your code, cloud and domains, and it matches new vulnerabilities like this one against what you actually run and tells you when one reaches you.

How to fix

  • copyparty (PyPI): upgrade to 1.16.15 or later
    pip install "copyparty>=1.16.15"

Affected products

  • copyparty (PyPI) ECOSYSTEM:introduced=0,fixed=1.16.15

Identifiers

  • CVE-2025-27145
  • GHSA-m2jw-cj8v-937r
  • PYSEC-2026-1278

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