CVE-2019-9842
CVSS v3
7.2
HIGH
EPSS Score
2.2 %
exploit probability, as of 2026-09-25
CISA KEV
No
known exploited
Exploitation
—
SSVC status
Description
madskristensen MiniBlog through 2018-05-18 allows remote attackers to execute arbitrary ASPX code via an IMG element with a data: URL, because SaveFilesToDisk in app_code/handlers/PostHandler.cs writes a decoded base64 string to a file without validating the extension.
Technical details
- Published
- 2019-06-14
Frequently asked questions
What is CVE-2019-9842?
madskristensen MiniBlog through 2018-05-18 allows remote attackers to execute arbitrary ASPX code via an IMG element with a data: URL, because SaveFilesToDisk in app_code/handlers/PostHandler.cs writes a decoded base64 string to a file without validating the extension.
Is CVE-2019-9842 actively exploited?
Active exploitation of CVE-2019-9842 has not been confirmed. Its EPSS score was 2.2% on 2026-09-25, the estimated probability of exploitation in the next 30 days.
What is the CVSS score for CVE-2019-9842?
CVE-2019-9842 has a CVSS v3 base score of 7.2 (HIGH severity).
Is CVE-2019-9842 affecting your environment?
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