CVE-2019-9845

Name: CVE-2019-9845
Creator: NVD / NIST
Published: 2019-04-16T18:29:07.827+00:00
License: https://creativecommons.org/publicdomain/zero/1.0/

UnknownEPSS 2.53%

Last modified Jun 17, 2026

CVE-2019-9845 is a vulnerability of currently unknown severity. 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.. EPSS estimates a 2.53% chance of exploitation in the next 30 days.

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.

Metrics

EPSS Probability

2.53%

82.9th percentile

Probability of exploitation in the next 30 days. Learn more

Weakness Enumeration

CWE-20

Affected Software

Vendor	Product	Versions
Miniblog.Core Project	Miniblog.Core	<= 2019-01-16

References

https://github.com/madskristensen/Miniblog.Core/blob/master/src/Controllers/BlogController.cs#L142Third Party Advisory
https://rastating.github.io/miniblog-remote-code-execution/Exploit, Third Party Advisory
https://github.com/madskristensen/Miniblog.Core/blob/master/src/Controllers/BlogController.cs#L142Third Party Advisory
https://rastating.github.io/miniblog-remote-code-execution/Exploit, Third Party Advisory

Timeline

Published: Apr 16, 2019
Last Modified: Jun 17, 2026
Status: Modified

Frequently Asked Questions

What is CVE-2019-9845?

How severe is CVE-2019-9845?

Severity scoring for CVE-2019-9845 is pending analysis. The EPSS model estimates a 2.53% probability of exploitation in the next 30 days.

How do I fix CVE-2019-9845?

Check the vendor references and advisories linked above for patched versions and mitigation guidance. You can also run a Strix scan to test if your systems are affected.

Are you affected by CVE-2019-9845?

Run a free Strix scan to check your systems for this vulnerability.

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Source: NVD / NIST