Advisory record · GHSA-4744-96p5-mp2j

pyLoad: Unprotected storage_folder enables arbitrary file write to Flask session store and code execution (Incomplete fix for CVE-2026-33509)

CVSS 7.5 HighEPSS 0.0055 · 46th percentile

Published by the GitHub Advisory Database at 4 Apr 2026, 06:43 UTC. agentprime has not analysed this yet, so whether it affects any app is not known.

PackageEcosystemAffectedFixed in
pyload-ngPyPI<=0.5.0b3No fixed version yet
Identifiers
GHSA-4744-96p5-mp2j · CVE-2026-35464 · PYSEC-2026-2989
Weakness (CWE)
CWE-502 · CWE-863
Published
4 Apr 2026
Updated
10 Sept 2026

Machine-written summary

Summary written by Claude Haiku from the source advisory. Not reviewed by a person.

Pyload-ng versions up to and including 0.5.0b3 are affected. A non-admin user with both the SETTINGS and ADD permissions can change the storage folder to a location outside the restricted paths, where Flask session files are kept, and plant a malicious pickle file there. When any HTTP request arrives carrying the matching session cookie, the file is deserialized and arbitrary code runs as the pyload service user, with no authentication needed for that final step. No fix is listed; the source suggests adding storage_folder to the admin-only options.

Written 5 Nov 2026.

Not analysed yet

We haven’t published our analysis of this Advisory yet. Once a person has reviewed it, this page will say what’s vulnerable, what has to be true for your app to be affected, and how to check.

Severity and exploitation

ScoreRatingCVSSVectorSource
7.5 High 3.1 CVSS:3.1/AV:N/AC:H/PR:L/UI:N/S:U/C:H/I:H/A:H CNA (GitHub_M)
  • CISA KEV Not listed.
  • EPSS 0.0055, the 46th percentile, on 12 Nov 2026: FIRST’s estimate of the chance of exploitation in the next 30 days.

Timeline

  1. 31 Oct 2026, 14:34 UTC First seen by agentprime
  2. 31 Oct 2026, 14:34 UTC Confirmed by OSV

Sources

Facts on this page come from the GitHub Advisory Database (CC-BY 4.0), OSV and the other sources listed, as published. We don’t reproduce full advisory descriptions, which can contain exploit code.