CVE-2025-53890

Published: Jul 15, 2025Modified: Jun 17, 2026Deferred

9.8

Vector

CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H

Exploitability: 3.9 / Impact: 5.9

Source: security-advisories@github.com (Secondary)

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.

Related CWEs

CWE-94

Improper Control of Generation of Code ('Code Injection')

The product constructs all or part of a code segment using externally-influenced input from an upstream component, but it does not neutralize or incorrectly neutralizes special elements that could modify the syntax or behavior of the intended code segment.

References (4)

https://github.com/pyload/pyload/commit/909e5c97885237530d1264cfceb5555870eb9546

Source: security-advisories@github.com

https://github.com/pyload/pyload/pull/4586

Source: security-advisories@github.com

https://github.com/pyload/pyload/security/advisories/GHSA-8w3f-4r8f-pf53

Source: security-advisories@github.com

https://github.com/pyload/pyload/security/advisories/GHSA-8w3f-4r8f-pf53

Source: 134c704f-9b21-4f2e-91b3-4a467353bcc0

Timeline

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