Critical severity9.8OSV Advisory· Published Jul 15, 2025· Updated Apr 15, 2026
CVE-2025-53890
CVE-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.
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Affected packages
Versions sourced from the GitHub Security Advisory.
| Package | Affected versions | Patched versions |
|---|---|---|
pyload-ngPyPI | < 0.20 | 0.20 |
Affected products
2Patches
Vulnerability mechanics
References
5News mentions
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