CVE-2026-38361

HIGH NUCLEI

dash-uploader 0.1.0-0.7.0a2 Upload Handler - Remote Code Execution

Title source: manual
STIX 2.1

Exploitation Summary

EIP tracks 1 public exploit for CVE-2026-38361. PoCs published by a1ohadance. A Nuclei detection template is also available.

AI-analyzed exploit summary This repository provides a detailed technical analysis of CVE-2026-38361, which involves multiple unauthenticated DoS vulnerabilities in the dash-uploader library. The writeup includes root cause analysis, vulnerable code snippets, and verified attack vectors such as OOM crashes, file truncation, and disk exhaustion.

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.

Exploits (1)

nomisec WRITEUP
by a1ohadance · poc
https://github.com/a1ohadance/CVE-2026-38361

This repository provides a detailed technical analysis of CVE-2026-38361, which involves multiple unauthenticated DoS vulnerabilities in the dash-uploader library. The writeup includes root cause analysis, vulnerable code snippets, and verified attack vectors such as OOM crashes, file truncation, and disk exhaustion.

Classification
Writeup 100%
Attack Type
Dos
Complexity
Trivial
Reliability
Reliable
Target: dash-uploader (versions 0.1.0 through 0.7.0a2)
No auth needed
Prerequisites: Network access to the target server · Ability to send crafted POST requests to the /API/resumable endpoint
mistral-large-3 · analyzed May 09, 2026 Full analysis →

Nuclei Templates (1)

dash-uploader 0.1.0 - 0.7.0a2 - Denial-of-Service via flowTotalChunks
HIGHby a1ohadance
Shodan: html:"_dash-undo-redo"
FOFA: body="_dash-undo-redo"

Scores

CVSS v3 7.5
EPSS 0.0264
EPSS Percentile 84.0%
Attack Vector NETWORK
CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H

CISA SSVC

Vulnrichment
Exploitation poc
Automatable yes
Technical Impact partial

Details

CWE
CWE-400 CWE-670
Status published
Products (2)
fohrloop/dash-uploader 0.7.0 alpha1 (2 CPE variants)
fohrloop/dash-uploader 0.1.0 - 0.6.1
Published May 08, 2026
Tracked Since May 08, 2026