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
Published Apr 16, 2019
9.8
CRITICALCVSS 3.0
EPSS 2.53%
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.
Affected products
No data.
- ≤ 2019-01-16
No data.
No Red Hat product state for this CVE.
No package ranges for this CVE.
Remediation
No remediation recorded yet.
Metrics
No CVSS v4.0 score for this CVE.
No CVSS v3.1 score for this CVE.
CVSS:3.0/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H
AV:N/AC:L/Au:N/C:P/I:P/A:P
This CVE is not in the KEV list.
No CISA SSVC assessment for this CVE yet.
Estimated probability of exploitation in the wild in the next 30 days (FIRST EPSS). As of Oct 2, 2026.
Score over time
2021–2026- EPSS v1
- EPSS v5
- EPSS v2
- EPSS v3
- EPSS v4
Percentile over time
- EPSS v1
- EPSS v5
- EPSS v2
- EPSS v3
- EPSS v4
Table of values (18 key points)
Flat stretches are collapsed; showing up to 120 newest points.
| Date | Score | Percentile | Model |
|---|---|---|---|
| Oct 2, 2026 | 2.53% (0.02527) | 84.34th | v5 (v2026.06.15) |
| Jun 15, 2026 | 2.53% (0.02527) | 82.78th | v5 (v2026.06.15) |
| Mar 30, 2025 | 0.86% (0.00864) | 73.00th | v4 (v2025.03.14) |
| Mar 29, 2025 | 2.06% (0.02059) | 73.20th | v4 (v2025.03.14) |
| Jul 20, 2024 | 0.72% (0.00716) | 80.74th | v3 (v2023.03.01) |
| May 14, 2024 | 0.72% (0.00716) | 80.42th | v3 (v2023.03.01) |
| Apr 9, 2024 | 0.79% (0.00794) | 81.25th | v3 (v2023.03.01) |
| Feb 20, 2024 | 1.00% (0.00999) | 83.15th | v3 (v2023.03.01) |
| Jan 15, 2024 | 0.72% (0.00724) | 78.57th | v3 (v2023.03.01) |
| Sep 3, 2023 | 0.57% (0.00575) | 75.19th | v3 (v2023.03.01) |
| Mar 7, 2023 | 0.56% (0.00565) | 74.39th | v3 (v2023.03.01) |
| Mar 6, 2023 | 1.05% (0.01055) | 52.13th | v2 (v2022.01.01) |
| Apr 1, 2022 | 1.05% (0.01055) | 48.43th | v2 (v2022.01.01) |
| Feb 4, 2022 | 9.03% (0.09029) | 86.86th | v2 (v2022.01.01) |
| Feb 3, 2022 | 3.43% (0.03427) | 68.31th | v5 (v2026.06.15) |
| Jan 6, 2022 | 3.43% (0.03427) | 68.01th | v1 |
| Sep 1, 2021 | 0.78% (0.00785) | 52.07th | v1 |
| Apr 14, 2021 | 0.78% (0.00785) | 0.00th | v1 |
References (4)
- https://github.com/advisories/GHSA-958r-g534-ccmr Advisory
- https://github.com/madskristensen/Miniblog.Core/blob/master/src/Controllers/BlogController.cs#L142 x_refsource_MISCThird Party Advisory
- https://nvd.nist.gov/vuln/detail/CVE-2019-9845
- https://rastating.github.io/miniblog-remote-code-execution/ x_refsource_MISCExploitThird Party Advisory
| Link | Providers | Tags |
|---|---|---|
| https://github.com/advisories/GHSA-958r-g534-ccmr | Advisory | |
| https://github.com/madskristensen/Miniblog.Core/blob/master/src/Controllers/BlogController.cs#L142 | x_refsource_MISCThird Party Advisory | |
| https://nvd.nist.gov/vuln/detail/CVE-2019-9845 | ||
| https://rastating.github.io/miniblog-remote-code-execution/ | x_refsource_MISCExploitThird Party Advisory |
Change history (0)
No recorded changes yet.