Monstra CMS through 3.0.4 has an incomplete "forbidden types" list that excludes .php (and similar) file extensions but not the .pht or .phar extension, which allows remote authenticated Admins or Editors to execute arbitrary PHP code by uploading a file, a different vulnerability than CVE-2017-18048
Published Jan 29, 2018
8.8
HIGHCVSS 3.1
EPSS 13.50%
Description
Monstra CMS through 3.0.4 has an incomplete "forbidden types" list that excludes .php (and similar) file extensions but not the .pht or .phar extension, which allows remote authenticated Admins or Editors to execute arbitrary PHP code by uploading a file, a different vulnerability than CVE-2017-18048.
Affected products
Remediation
No remediation recorded yet.
Metrics
No CVSS v4.0 score for this CVE.
CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:H
No CVSS v3.0 score for this CVE.
AV:N/AC:L/Au:S/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 3, 2026.
Score over time
2021–2026- EPSS v1
- EPSS v2
- EPSS v3
- EPSS v4
- EPSS v5
Percentile over time
- EPSS v1
- EPSS v2
- EPSS v3
- EPSS v4
- EPSS v5
Table of values (23 key points)
Flat stretches are collapsed; showing up to 120 newest points.
| Date | Score | Percentile | Model |
|---|---|---|---|
| Oct 3, 2026 | 13.50% (0.13499) | 96.34th | v5 (v2026.06.15) |
| Jun 15, 2026 | 13.58% (0.13585) | 95.97th | v5 (v2026.06.15) |
| Feb 3, 2026 | 12.72% (0.12725) | 93.84th | v4 (v2025.03.14) |
| Mar 30, 2025 | 10.46% (0.10464) | 92.53th | v4 (v2025.03.14) |
| Mar 29, 2025 | 14.57% (0.14570) | 90.80th | v4 (v2025.03.14) |
| Mar 17, 2025 | 10.46% (0.10464) | 92.67th | v4 (v2025.03.14) |
| Dec 17, 2024 | 3.24% (0.03243) | 91.04th | v3 (v2023.03.01) |
| Mar 26, 2024 | 2.20% (0.02204) | 89.19th | v3 (v2023.03.01) |
| Jun 22, 2023 | 2.34% (0.02336) | 88.20th | v3 (v2023.03.01) |
| May 10, 2023 | 2.37% (0.02370) | 88.22th | v3 (v2023.03.01) |
| May 8, 2023 | 3.27% (0.03267) | 89.82th | v3 (v2023.03.01) |
| Mar 7, 2023 | 2.69% (0.02685) | 88.79th | v3 (v2023.03.01) |
| Mar 6, 2023 | 8.08% (0.08078) | 93.34th | v2 (v2022.01.01) |
| Nov 15, 2022 | 8.08% (0.08078) | 93.14th | v2 (v2022.01.01) |
| Jul 15, 2022 | 1.06% (0.01061) | 50.56th | v2 (v2022.01.01) |
| Apr 1, 2022 | 8.08% (0.08078) | 92.72th | v2 (v2022.01.01) |
| Feb 4, 2022 | 8.08% (0.08078) | 81.87th | v2 (v2022.01.01) |
| Feb 3, 2022 | 4.53% (0.04526) | 76.76th | v1 |
| Jan 29, 2022 | 4.53% (0.04526) | 76.73th | v1 |
| Jan 6, 2022 | 3.43% (0.03427) | 68.01th | v1 |
| Sep 1, 2021 | 3.43% (0.03427) | 81.93th | v1 |
| Jun 5, 2021 | 3.43% (0.03427) | 0.00th | v1 |
| Apr 14, 2021 | 0.52% (0.00523) | 0.00th | v1 |
References (3)
- http://packetstormsecurity.com/files/162968/Monstra-CMS-3.0.4-Remote-Code-Execution.html x_refsource_MISCExploitThird Party AdvisoryVDB Entry
- https://github.com/Hacker5preme/Exploits/tree/main/CVE-2018-6383-Exploit x_refsource_MISCExploitThird Party Advisory
- https://github.com/monstra-cms/monstra/issues/429 x_refsource_MISCExploitIssue TrackingThird Party Advisory
| Link | Providers | Tags |
|---|---|---|
| http://packetstormsecurity.com/files/162968/Monstra-CMS-3.0.4-Remote-Code-Execution.html | x_refsource_MISCExploitThird Party AdvisoryVDB Entry | |
| https://github.com/Hacker5preme/Exploits/tree/main/CVE-2018-6383-Exploit | x_refsource_MISCExploitThird Party Advisory | |
| https://github.com/monstra-cms/monstra/issues/429 | x_refsource_MISCExploitIssue TrackingThird Party Advisory |
Change history (0)
No recorded changes yet.