Resource exhaustion in Fohrloop Dash-Uploader
CVE-2026-38361
Multiple unauthenticated denial-of-service (DoS) issues in fohrloop dash-uploader v0.1.0 through v0.7.0a2. The chunked-upload handler (dash_uploader/httprequesthandler.py, dash_uploader/upload.py) trusts unsanitized, attacker-controlled upload parameters (e.g. flowTotalChunks) and does not enforce the documented max_file_size limit, allowing a remote, unauthenticated attacker to cause an out-of-memory (OOM) process crash (unbounded range(1, flowTotalChunks + 1) allocation), truncation of the target file to zero bytes (flowTotalChunks=0, where the all([]) == True quirk runs the file-assembly branch on zero chunks), permanent disk exhaustion (never-cleaned-up temporary directories per flowIdentifier), and a complete bypass of the documented max_file_size limit.
Vulnerability class: DoS (Denial of Service)
Published · last modified .
CVSS v3 metric
CVSS v3 base score 7.5 (High). Vector: CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H.
EPSS exploit prediction
EPSS: 0.028 (85.8th percentile), scored .
Low probability of exploitation in the next 30 days, but still tracked. 86th percentile — 85.8% of CVEs in the catalogue have a lower EPSS than this one. How to read EPSS.
EPSS over last 30 days · oldest: 0.026 · newest: 0.028 · change: +0.001
Affected products
- Fohrloop Dash-Uploader — versions 0.7.0
Weakness classification (CWE)
Public proof-of-concept exploits
References
- github.com/fohrloop/dash-uploader (Product)
- pypi.org/project/dash-uploader/ (Product)
- github.com/fohrloop/dash-uploader/blob/stable/dash_uploader/httprequesthandler… (Product)
- github.com/fohrloop/dash-uploader/issues/153 (Product)
- pypistats.org/packages/dash-uploader (Product)
- libraries.io/pypi/dash-uploader (Product)
- pepy.tech/project/dash-uploader (Product)
- docs.python.org/3/library/functions.html (Product)
- github.com/a1ohadance/CVE-2026-38361 (Exploit, Third Party Advisory)
- github.com/advisories/GHSA-xp7f-v245-w3w8
Frequently asked questions
- What is CVE-2026-38361?
- CVE-2026-38361 is a high-severity vulnerability in Fohrloop Dash-Uploader, classified under Uncontrolled Resource Consumption. CVSS score: 7.5/10. Published 2026-05-08.
- How severe is CVE-2026-38361?
- High severity. CVSS v3 base score is 7.5 out of 10.
- Is CVE-2026-38361 known to be exploited?
- 1 public proof-of-concept repositories are indexed. Not currently listed in the CISA KEV catalog.