CVE-2025-53890

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.

• CWE-94

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

Published

Jul 15, 2025

Last Modified

Jun 17, 2026

Status

Deferred

• How Strix found a critical auth bypass in etcdStrix autonomously discovered a critical authentication bypass in etcd, later designated CVE-2026-33413.
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