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Advisory details: vulnrichment / CVE-2026-35464
Advisory ID vulnrichment/CVE-2026-35464
Aliases
Summary pyLoad is a free and open-source download manager written in Python. The fix for CVE-2026-33509 added an ADMIN_ONLY_OPTIONS set to block non-admin users from modifying security-critical config options. The storage_folder option is not in this set and passes the existing path restriction because the Flask session directory is outside both PKGDIR and userdir. A user with SETTINGS and ADD permissions can redirect downloads to the Flask filesystem session store, plant a malicious pickle payload as a predictable session file, and trigger arbitrary code execution when any HTTP request arrives with the corresponding session cookie. This vulnerability is fixed with commit c4cf995a2803bdbe388addfc2b0f323277efc0e1.
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 (2)
CWE-502 Deserialization of Untrusted Data
CWE-863 Incorrect Authorization
System Score Found at
cvssv3.1 7.5
ssvc Track*
Reference id Reference type URL
https://github.com/pyload/pyload/commit/c4cf995a2803bdbe388addfc2b0f323277efc0e1
https://github.com/pyload/pyload/security/advisories/GHSA-4744-96p5-mp2j
https://www.cve.org/CVERecord?id=CVE-2026-33509
GHSA-r7mc-x6x7-cqxx Other https://github.com/pyload/pyload/security/advisories/GHSA-r7mc-x6x7-cqxx
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:H/PR:L/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:N/T:T/P:M/B:A/M:M/D:R/2026-04-07T15:12:26Z/ Found at None

Vector: SSVCv2/E:P/A:N/T:T/P:M/B:A/M:M/D:R/2026-04-07T15:12:26Z/

Decision: Track*

Source URL: https://github.com/cisagov/vulnrichment/blob/develop/2026/35xxx/CVE-2026-35464.json

Source Advisory: vulnrichment/CVE-2026-35464

View SSVC decision tree 
[{'Exploitation': 'poc'},
 {'Automatable': 'no'},
 {'Technical Impact': 'total'},
 {'Mission Prevalence': 'minimal'},
 {'Public Well-being Impact': 'material'},
 {'Mission & Well-being': 'medium'}]