CVE-2025-53890 | THREATINT

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.

PUBLISHED Reserved 2025-07-11 | Published 2025-07-14 | Updated 2025-07-15 | Assigner GitHub_M

CRITICAL: 9.8CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H

Problem types

CWE-94: Improper Control of Generation of Code ('Code Injection')

Product status

< 0.5.0b3.dev89

affected

References

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

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

github.com/pyload/pyload/pull/4586

github.com/...ommit/909e5c97885237530d1264cfceb5555870eb9546

cve.org (CVE-2025-53890)

nvd.nist.gov (CVE-2025-53890)

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