title: Dev Blog v1.0 - Stored XSS
description: Dev blog v1.0 allows to exploit an XSS through an unrestricted file upload, together with a bad entropy of filenames. With this an attacker can upload a malicious HTML file, then guess the filename of the uploaded file and send it to a potential victim.
problem types: CWE-79 Improper Neutralization of Input During Web Page Generation ('Cross-site Scripting')
affected:
{
defaultStatus: unaffected
product: Dev Blog
vendor: Dev Blog
versions:
status: affected, version: 1.0
}
metrics:
cvssV3_1: [
attackComplexity: LOW
attackVector: NETWORK
availabilityImpact: LOW
baseScore: 6.4
baseSeverity: MEDIUM
confidentialityImpact: HIGH
integrityImpact: HIGH
privilegesRequired: HIGH
scope: UNCHANGED
userInteraction: REQUIRED
vectorString: CVSS:3.1/AV:N/AC:L/PR:H/UI:R/S:U/C:H/I:H/A:L
version: 3.1
]
format: CVSS
scenarios: GENERAL