What’s Vulnerable › Vulnerabilities

CVE-2026-38361

• Severity: high (CVSS 7.5 v3.1)
• Exploited in the wild: not listed in CISA KEV
• EPSS: 2.6% probability of exploitation in the next 30 days
• Public exploit or detection template: yes
• Published: 2026-05-08 · updated 2026-06-17
• Weakness: CWE-400

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: from 0.1.0 through 0.6.1; 0.7.0-alpha1, 0.7.0-alpha2

References

• https://docs.python.org/3/library/functions.html#all
• https://github.com/a1ohadance/CVE-2026-38361
• https://github.com/advisories/GHSA-xp7f-v245-w3w8
• https://github.com/fohrloop/dash-uploader
• https://github.com/fohrloop/dash-uploader/blob/stable/dash_uploader/httprequesthandler.py
• https://github.com/fohrloop/dash-uploader/issues/153
• https://github.com/github/advisory-database/pull/7636
• https://libraries.io/pypi/dash-uploader
• https://pepy.tech/project/dash-uploader
• https://pypi.org/project/dash-uploader/
• https://pypistats.org/packages/dash-uploader
• https://github.com/a1ohadance/CVE-2026-38361

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