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.
References (3)
Core 3
Core References
Vendor Advisory x_refsource_confirm
https://github.com/pyload/pyload/security/advisories/GHSA-8w3f-4r8f-pf53
Issue Tracking x_refsource_misc
https://github.com/pyload/pyload/pull/4586
Patch x_refsource_misc
https://github.com/pyload/pyload/commit/909e5c97885237530d1264cfceb5555870eb9546
Scores
CVSS v3
9.8
EPSS
0.0064
EPSS Percentile
70.8%
Attack Vector
NETWORK
CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H
CISA SSVC
Vulnrichment
Exploitation
poc
Automatable
yes
Technical Impact
total
Details
CWE
CWE-94
Status
published
Products (2)
pyload/pyload
< 0.5.0b3.dev89
pypi/pyload-ng
0 - 0.20PyPI
Published
Jul 15, 2025
Tracked Since
Feb 18, 2026