AList vulnerable to Improper Preservation of PermissionsGHSA-4gjr-vgfx-9qvw
HIGHFix: alist-org/alist@85e1350GHSA-4gjr-vgfx-9qvw is a high-severity (CVSS 8.8) Unrestricted File Upload vulnerability in github.com/alist-org/alist/v3. 1 public exploit or proof-of-concept reference is indexed, so weaponization risk is real. A fix is available for github.com/alist-org/alist/v3 — see the affected versions and patch details below.
Exploitation Status
Proof-of-concept exploit code exists
- CISA’s SSVC triage found public proof-of-concept exploit code for this CVE, though no confirmed active exploitation.
- A successful exploit gives an attacker total control of the affected component, not partial access.
Exploitation and automatability from CISA’s SSVC triage for GHSA-4gjr-vgfx-9qvw.
EPSS Exploitation Probability
Probability of exploitation in the next 30 days, from FIRST.org EPSS.
How urgent is this, really
Where this sits among everything scored
Real-World Exposure
github.com/alist-org/alist/v3Real-time download stats are indexed for npm and PyPI packages. This vulnerability affects Go packages — download data is not available via public APIs for these ecosystems.
Description
Alist v3.4.0 is vulnerable to File Upload. A user with only file upload permission can upload any file to any folder (even a password protected one). Version 3.5.1 contains a patch.
Affected Packages
| Ecosystem | Package | Vulnerable range | Fix |
|---|---|---|---|
| 🐹Go | github.com/alist-org/alist/v3 | all versions | 3.5.1go get github.com/alist-org/alist/v3@v3.5.1 |
Affected Products
alistalistgoResearch use only. For defensive security, authorized penetration testing, and academic research only. Never execute exploit code against systems without explicit written authorization.
Detection & mitigation playbook
Open-source dependencyDetect
Scan your dependency tree (package-lock.json, pnpm-lock.yaml, requirements.txt, go.sum, etc.) for github.com/alist-org/alist/v3, including transitive dependencies — a direct dependency you never call can still pull in a vulnerable version.
Fix
Update github.com/alist-org/alist/v3 to 3.5.1 or later, then make sure no transitive (indirect) dependency still pins the vulnerable range — O3 confirms GHSA-4gjr-vgfx-9qvw is resolved across your whole dependency graph.
Workarounds
Treat uploaded files as untrusted until proven otherwise: validate the actual content type rather than the supplied extension, store uploads outside the web root on a volume mounted without execute permission, and rename them to server-generated identifiers so an attacker cannot choose the path a request will later resolve.
Frequently Asked Questions
Is GHSA-4gjr-vgfx-9qvw in your dependencies?
Find it across Go, including transitive dependencies.