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.
CVE-2026-35464
Score 7.5 from GitHub Security Advisory (severity: HIGH) published 2026-04-04. NVD baseline CVSS 7.5; sources differ by 0.0.
- High severity, but no confirmed exploitation yet
No vendor fix yet — apply a workaround or compensating control (WAF / firewall / segmentation) and watch for a patch.
- CVSS v3
- 7.5
- EG Score
- 7.5(medium)
- EPSS
- 41.1%
- KEV
- Not listed
Published
April 7, 2026
Last Modified
April 23, 2026
References (5)
- security-advisories@githubhttps://github.com/pyload/pyload/commit/c4cf995a2803bdbe388addfc2b0f323277efc0e1
- security-advisories@githubhttps://github.com/pyload/pyload/security/advisories/GHSA-4744-96p5-mp2j
- security-advisories@githubhttps://github.com/pyload/pyload/security/advisories/GHSA-r7mc-x6x7-cqxx
- security-advisories@githubhttps://www.cve.org/CVERecord?id=CVE-2026-33509
- 134c704f-9b21-4f2e-91b3-4a467353bcc0https://github.com/pyload/pyload/security/advisories/GHSA-4744-96p5-mp2j
Patch Availability(1)
| Vendor / Ecosystem | Fixed in / Patch | Released | Source |
|---|---|---|---|
| pip | pyload-ng | — | ghsa |
Patches are aggregated from vendor advisories (Red Hat, Microsoft, Cisco, GitHub) and package ecosystems (OSV, GHSA). Multiple rows for the same upstream release have been deduplicated.
Affected Packages
(1 across 1 ecosystem)
PyPI(1)
| Package | Vulnerable range | Fixed in | Dependents |
|---|---|---|---|
| pyload-ng | 0.5.0a5.dev528 ... 0.5.0b3.dev97 (102 versions) | — | — |
Weakness Classification(2)
MITRE Common Weakness Enumeration — the root-cause categories this CVE belongs to.
Data Freshness Timeline
(refreshed 9× in last 7d / 42× in last 30d)
Each row is a source pipeline that fetched or updated this CVE on that date, with what changed. For example, "NVD update" means NVD published or revised its analysis for this CVE; "MITRE cvelistV5" means we ingested or refreshed it from the CNA feed. Most recent first.
Showing the most recent 100 of 103 total refreshes for this CVE.
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Related CVEs(same product + same CWE)
Same product
10 shownpip:pyload-ng
Same CWE
10 shownCWE-863 · CWE-502
- CVE-2010-1435EG 9.8CRITICAL
- CVE-2016-20005EG 9.8CRITICAL
- CVE-2016-20004EG 9.8CRITICAL
- CVE-2016-20002EG 9.8CRITICAL
- CVE-2016-20001EG 9.8CRITICAL
- CVE-2017-10992EG 9.8EPSS 95%CRITICAL
- CVE-2013-4521EG 9.8EPSS 90%CRITICAL
- CVE-2013-2198EG 9.8CRITICAL
- CVE-2014-1860EG 9.8CRITICAL
- CVE-2016-1000027EG 9.8EPSS 98%CRITICAL
Frequently asked(5)
What is CVE-2026-35464?
When was CVE-2026-35464 disclosed?
Is CVE-2026-35464 actively exploited?
What is the CVSS score of CVE-2026-35464?
How do I remediate CVE-2026-35464?
Dependency Blast Radius
See which npm, PyPI, Go, and Maven packages are affected by CVE-2026-35464
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