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CVE-2026-35187

pyLoad has SSRF in parse_urls API endpoint via unvalidated URL parameter

Published: Apr 6, 2026Updated: Apr 20, 2026 Sources: CVE List NVDCWE-918
NVD MITRE
7.7CVSSHIGH
EPSS Score
0.3%
Top 81.8%
CISA KEV
Not in KEV
Exploits
No Known Exploits
Remediation
Patch Available

Description

pyLoad is a free and open-source download manager written in Python. In 0.5.0b3.dev96 and earlier, the parse_urls API function in src/pyload/core/api/__init__.py fetches arbitrary URLs server-side via get_url(url) (pycurl) without any URL validation, protocol restriction, or IP blacklist. An authenticated user with ADD permission can make HTTP/HTTPS requests to internal network resources and cloud metadata endpoints, read local files via file:// protocol (pycurl reads the file server-side), interact with internal services via gopher:// and dict:// protocols, and enumerate file existence via error-based oracle (error 37 vs empty response).

CVSS Vector Breakdown

AV:NAC:LPR:LUI:NS:CC:HI:NA:N
Exploitability
AV:NAttack Vector
Network
AC:LAttack Complexity
Low
PR:LPrivileges Required
Low
UI:NUser Interaction
None
Scope
S:CScope
Changed
Impact
C:HConfidentiality
High
I:NIntegrity
None
A:NAvailability
None
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Weaknesses

CWE-918

Affected Products

pyloadpyload
On-prem
Consumer Software / file-utility
pyload-ngpyload-ng project
On-prem
Consumer Software / file-utility
pyloadoss-projectConsumer Softwareaka pyload/pyload
pyload-ng projectoss-projectConsumer Softwareaka pyload-ng

Attack Graph

Products CVE Techniques Tactics

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Exploitability

Official Patch Available
Workaround Available

MITRE ATT&CK

2 techniques
Command and Control
Initial Access
View detailed technique mapping

References

https://github.com/pyload/pyload/security/advisories/GHSA-2wvg-62qm-gj33
github.com
https://github.com/pyload/pyload/commit/4032e57d61d8f864e39f4dcfdb567527a50a9e1f
github.com

Timeline

Published
Apr 6, 2026
Last Updated
Apr 20, 2026

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