CVE-2025-53890Code Injection in Pyload

Severity
9.8CRITICALNVD
EPSS
0.6%
top 29.29%
CISA KEV
Not in KEV
Exploit
No known exploits
Timeline
PublishedJul 15

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,

CVSS vector

CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:HExploitability: 3.9 | Impact: 5.9

Affected Packages2 packages

CVEListV5pyload/pyload< 0.5.0b3.dev89

🔴Vulnerability Details

3
GHSA
pyLoad vulnerable to XSS through insecure CAPTCHA2025-07-15
OSV
pyLoad vulnerable to XSS through insecure CAPTCHA2025-07-15
CVEList
pyLoad vulnerable to remote code execution through js2py onCaptchaResult2025-07-14
CVE-2025-53890 — Code Injection in Pyload | cvebase