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CVE-2025-53890

CRITICAL

9.8

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.

CVE Details

CVSS v3.1 Score9.8

SeverityCRITICAL

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

Attack VectorNETWORK

ComplexityLOW

Privileges RequiredNONE

User InteractionNONE

Published7/15/2025

Last Modified7/15/2025

Sourcenvd

Honeypot Sightings0

Weaknesses (CWE)

CWE-94

References

https://github.com/pyload/pyload/commit/909e5c97885237530d1264cfceb5555870eb9546(security-advisories@github.com)

https://github.com/pyload/pyload/pull/4586(security-advisories@github.com)

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

https://github.com/pyload/pyload/security/advisories/GHSA-8w3f-4r8f-pf53(134c704f-9b21-4f2e-91b3-4a467353bcc0)

IOC Correlations

No correlations recorded

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