Description
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.
Affected products
fohrloop: dash-uploader
References10
- github.com/a1ohadance/CVE-2026-38361 ExploitThird Party Advisory
- github.com/a1ohadance/CVE-2026-38361 ExploitThird Party Advisory
- docs.python.org/3/library/functions.html#all Product
- github.com/advisories/GHSA-xp7f-v245-w3w8
- github.com/fohrloop/dash-uploader Product
- github.com/fohrloop/dash-uploader/blob/stable/dash_uploader/htt… Product
- github.com/fohrloop/dash-uploader/issues/153 Product
- github.com/github/advisory-database/pull/7636
- libraries.io/pypi/dash-uploader Product
- pepy.tech/project/dash-uploader Product
Metrics
- CVSS 3.1
-
7.5
HIGH
Score source: NVD
CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H - EPSS — exploit probability
- 3% percentile: 86 · as of 13 November 2026
- CWE
- CWE-400CWE-670
Could this be exploited in your environment?
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