CVE-2025-53890CRITICAL 9.8EPSS p62.6%

CVE-2025-53890CVE-2025-53890

Description

pyload is an open-source Download Manager written in pure Python. An unsafe JavaScript evaluation vulnerability in pyLoad’s CAPTCHA processing code allows unauthenticated remote attackers to execute arbitrary code in the client browser and potentially the backend server. Exploitation requires no user interaction or authentication and can result in session hijacking, credential theft, and full system remote code execution. Commit 909e5c97885237530d1264cfceb5555870eb9546, the patch for the issue, is included in version 0.5.0b3.dev89.

Scoring

CVSS 3.19.8 (CRITICAL)
VectorCVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H
EPSS1.14% probability of exploitation · percentile 62.6% · 2026-06-18T12:00:27Z
Published2025-07-15
Last modified2026-04-15

Underlying weaknesses· 1

CWE-94

References

  1. https://github.com/pyload/pyload/commit/909e5c97885237530d1264cfceb5555870eb9546
  2. https://github.com/pyload/pyload/pull/4586
  3. https://github.com/pyload/pyload/security/advisories/GHSA-8w3f-4r8f-pf53
  4. https://github.com/pyload/pyload/security/advisories/GHSA-8w3f-4r8f-pf53

1

TypeTargetConfidenceTier
WeaknessImproper Control of Generation of Code ('Code Injection')cwe-940%live

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Sourced from NVD + FIRST.org EPSS. Curated for EU compliance use cases by Adam Lundqvist, Founder at SQUR.