{"id":"CVE-2026-35464","published":"2026-04-07T14:38:02Z","modified":"2026-04-07T15:58:59Z","title":"pyLoad has an incomplete fix for CVE-2026-33509: unprotected storage_folder enables arbitrary file write to Flask…","vendor":"pyload","product":"pyload","tier":"tail","description":{"text":"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.","provenance":"source","from":"CVE.org"},"cvss":{"score":7.5,"severity":"HIGH","version":"3.1","vector":"CVSS:3.1/AV:N/AC:H/PR:L/UI:N/S:U/C:H/I:H/A:H","provenance":"source","from":"CVE.org CNA"},"epss":{"score":0.00529,"percentile":0.4462,"provenance":"source"},"cwes":[{"id":"CWE-502","name":"Deserialization of Untrusted Data"},{"id":"CWE-863","name":"Incorrect Authorization"}],"references":[{"url":"https://github.com/pyload/pyload/security/advisories/GHSA-4744-96p5-mp2j","tags":["x_refsource_CONFIRM"]},{"url":"https://github.com/pyload/pyload/security/advisories/GHSA-r7mc-x6x7-cqxx","tags":["x_refsource_MISC"]},{"url":"https://github.com/pyload/pyload/commit/c4cf995a2803bdbe388addfc2b0f323277efc0e1","tags":["x_refsource_MISC"]},{"url":"https://www.cve.org/CVERecord?id=CVE-2026-33509","tags":["x_refsource_MISC"]}],"priority":{"score":14.2,"factors":[{"name":"EPSS percentile","points":8.92},{"name":"CVSS severity","points":5.25}]},"vendorSlug":"pyload","affectedVersions":[{"vendor":"pyload","product":"pyload","versions":["<= 0.5.0b3.dev96"]}],"affected":[{"ecosystem":"PyPI","package":"pyload-ng","vulnerableRanges":["<=0.5.0b3"],"patched":[],"from":["GHSA-4744-96p5-mp2j","PYSEC-2026-2989"],"provenance":"source"}],"euvd":{"id":"EUVD-2026-19661","exploited":false,"provenance":"source"},"lineage":{"familyId":"fam-pyload-cve-2026-33509","parents":[{"from":"CVE-2026-33509","to":"CVE-2026-35464","relation":"related","confidence":"high","kind":"lineage","evidence":[{"kind":"osv-related","provenance":"source","id":"GHSA-r7mc-x6x7-cqxx","via":"related"},{"kind":"osv-related","provenance":"source","id":"GHSA-4744-96p5-mp2j","via":"reference","url":"https://github.com/pyload/pyload/security/advisories/GHSA-r7mc-x6x7-cqxx"},{"kind":"osv-related","provenance":"source","id":"PYSEC-2026-2989","via":"reference","url":"https://github.com/pyload/pyload/security/advisories/GHSA-r7mc-x6x7-cqxx"}]}],"children":[{"from":"CVE-2026-35464","to":"CVE-2026-42312","relation":"related","confidence":"high","kind":"lineage","evidence":[{"kind":"osv-related","provenance":"source","id":"GHSA-ccxc-x975-4hh9","via":"reference","url":"https://github.com/advisories/GHSA-4744-96p5-mp2j"}]},{"from":"CVE-2026-35464","to":"CVE-2026-42313","relation":"related","confidence":"high","kind":"lineage","evidence":[{"kind":"osv-related","provenance":"source","id":"GHSA-pg67-9wjv-mr85","via":"reference","url":"https://github.com/advisories/GHSA-4744-96p5-mp2j"}]}]}}