CVE-2025-54140: PYSEC-2026-1823 - `pyLoad` has Path Traversal Vulnerability in `json/upload` Endpoint that allows Arbitrary File Write

CVE-2025-54140 · Severity: low · CVSS 3.1 · Published 2026-07-07

`pyLoad` has Path Traversal Vulnerability in `json/upload` Endpoint that allows Arbitrary File Write

Technologies: pyload-ng (PyPI). Vendors: PyPI.

Quick answers

Is CVE-2025-54140 exploited in the wild?
No. Junglewise Threat Intelligence has no report of CVE-2025-54140 being exploited in the wild.
How severe is CVE-2025-54140?
Low severity, with a CVSS score of 3.1, published 7 July 2026.
Which products and versions are affected?
pyload-ng (PyPI) ECOSYSTEM:introduced=0.5.0b3.dev89,fixed=0.5.0b3.dev90.
Is there a fix for CVE-2025-54140?
Yes. pyload-ng (PyPI): upgrade to 0.5.0b3.dev90 or later. Junglewise finds every place you run it, drafts the upgrade and applies it once you approve.
Am I affected by CVE-2025-54140?
Check whether you run pyload-ng (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

  • pyload-ng (PyPI): upgrade to 0.5.0b3.dev90 or later
    pip install "pyload-ng>=0.5.0b3.dev90"

Affected products

  • pyload-ng (PyPI) ECOSYSTEM:introduced=0.5.0b3.dev89,fixed=0.5.0b3.dev90

Identifiers

  • CVE-2025-54140
  • GHSA-xqpg-92fq-grfg
  • PYSEC-2026-1823

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