CVE-2025-53890

Public Exploit
pyLoad vulnerable to remote code execution through js2py onCaptchaResult

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.

Category

9.8
CVSS
Severity: Critical
CVSS 3.1 •
EPSS 0.30%
Affected: pyload pyload
Published at:
Updated at:

References

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

Frequently Asked Questions

What is the severity of CVE-2025-53890?
CVE-2025-53890 has been scored as a critical severity vulnerability.
How to fix CVE-2025-53890?
To fix CVE-2025-53890, make sure you are using an up-to-date version of the affected component(s) by checking the vendor release notes. As for now, there are no other specific guidelines available.
Is CVE-2025-53890 being actively exploited in the wild?
It is possible that CVE-2025-53890 is being exploited or will be exploited in a near future based on public information. According to its EPSS score, there is a ~0% probability that this vulnerability will be exploited by malicious actors in the next 30 days.
What software or system is affected by CVE-2025-53890?
CVE-2025-53890 affects pyload pyload.
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