Description
madskristensen Miniblog.Core through 2019-01-16 allows remote attackers to execute arbitrary ASPX code via an IMG element with a data: URL, because SaveFilesToDisk in Controllers/BlogController.cs writes a decoded base64 string to a file without validating the extension.
References (2)
Core 2
Core References
Exploit, Third Party Advisory x_refsource_misc
https://rastating.github.io/miniblog-remote-code-execution/
Third Party Advisory x_refsource_misc
https://github.com/madskristensen/Miniblog.Core/blob/master/src/Controllers/BlogController.cs#L142
Scores
CVSS v3
9.8
EPSS
0.0086
EPSS Percentile
75.2%
Attack Vector
NETWORK
CVSS:3.0/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H
Details
CWE
CWE-20
Status
published
Products (2)
miniblog.core_project/miniblog.core
< 2019-01-16
nuget/MadsKristensen.AspNetCore.Miniblog
0NuGet
Published
Apr 16, 2019
Tracked Since
Feb 18, 2026