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Advisory details: vulnrichment / CVE-2025-53890
Advisory ID vulnrichment/CVE-2025-53890
Aliases
Summary 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.
Status Published
Exploitability 0.5
Weighted Severity 0.0
Risk
Affected and Fixed Packages Package Details
Introduced and Fixed Package Commit Patches Package Commit Patches Details
Weaknesses (1)
CWE-94 Improper Control of Generation of Code ('Code Injection')
System Score Found at
cvssv3.1 9.8
ssvc Track*
Reference id Reference type URL
https://github.com/pyload/pyload/commit/909e5c97885237530d1264cfceb5555870eb9546
https://github.com/pyload/pyload/pull/4586
GHSA-8w3f-4r8f-pf53 https://github.com/pyload/pyload/security/advisories/GHSA-8w3f-4r8f-pf53
No exploits are available.

No EPSS data available for this advisory.

Patch URL
There are no known patches.
Vector: CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H Found at None
Attack Vector (AV) Attack Complexity (AC) Privileges Required (PR) User Interaction (UI) Scope (S) Confidentiality Impact (C) Integrity Impact (I) Availability Impact (A)

network

adjacent_network

local

physical

low

high

none

low

high

none

required

unchanged

changed

high

low

none

high

low

none

high

low

none
Vector: SSVCv2/E:P/A:Y/T:T/P:M/B:A/M:M/D:R/2025-07-15T13:24:23Z/ Found at None

Vector: SSVCv2/E:P/A:Y/T:T/P:M/B:A/M:M/D:R/2025-07-15T13:24:23Z/

Decision: Track*

Source URL: https://github.com/cisagov/vulnrichment/blob/develop/2025/53xxx/CVE-2025-53890.json

Source Advisory: vulnrichment/CVE-2025-53890

View SSVC decision tree 
[{'Exploitation': 'poc'},
 {'Automatable': 'yes'},
 {'Technical Impact': 'total'},
 {'Mission Prevalence': 'minimal'},
 {'Public Well-being Impact': 'material'},
 {'Mission & Well-being': 'medium'}]