How severe is CVE-2017-18048?

CVE-2017-18048 has a CVSS 3.x base score of 8.8, rated high severity. It is exploitable over network with low attack complexity, requires low privileges and no user interaction. Impact on confidentiality is high, integrity high, and availability high.

Is CVE-2017-18048 being actively exploited?

It is not currently listed in CISA's KEV catalog. Its EPSS exploit-prediction score is 63% (99th percentile), an estimate of the probability of exploitation in the next 30 days.

What products are affected by CVE-2017-18048?

CVE-2017-18048 affects Monstra. See the affected-products list for the exact vulnerable versions.

How do I fix CVE-2017-18048?

Review the linked vendor and NVD advisories for patched versions and mitigations, then upgrade or apply the recommended workaround. Given its high severity, prioritise patching exposed systems.

When was CVE-2017-18048 published?

CVE-2017-18048 was published on 2018-01-23 and last updated on 2026-06-17.

CVE-2017-18048

CVE-2017-18048 is a high-severity vulnerability in Monstra with a CVSS 3.x base score of 8.8. Its EPSS exploit-prediction score of 63% places it in the 99th percentile, indicating an elevated likelihood of exploitation. The underlying weakness is classified as CWE-434.

Key facts

Severity: High (CVSS 3.x base score 8.8)
CVSS v2: 6.5
EPSS exploit prediction: 63% (99th percentile)
Actively exploited: Not listed in CISA KEV
Weakness: CWE-434
Affected product: Monstra
Published: 2018-01-23
Last modified: 2026-06-17

Description

Monstra CMS 3.0.4 allows users to upload arbitrary files, which leads to remote command execution on the server, for example because .php (lowercase) is blocked but .PHP (uppercase) is not.

Frequently asked questions

What is CVE-2017-18048?: Monstra CMS 3.0.4 allows users to upload arbitrary files, which leads to remote command execution on the server, for example because .php (lowercase) is blocked but .PHP (uppercase) is not.
How severe is CVE-2017-18048?: CVE-2017-18048 has a CVSS 3.x base score of 8.8, rated high severity. It is exploitable over network with low attack complexity, requires low privileges and no user interaction. Impact on confidentiality is high, integrity high, and availability high.
Is CVE-2017-18048 being actively exploited?: It is not currently listed in CISA's KEV catalog. Its EPSS exploit-prediction score is 63% (99th percentile), an estimate of the probability of exploitation in the next 30 days.
What products are affected by CVE-2017-18048?: CVE-2017-18048 affects Monstra. See the affected-products list for the exact vulnerable versions.
How do I fix CVE-2017-18048?: Review the linked vendor and NVD advisories for patched versions and mitigations, then upgrade or apply the recommended workaround. Given its high severity, prioritise patching exposed systems.
When was CVE-2017-18048 published?: CVE-2017-18048 was published on 2018-01-23 and last updated on 2026-06-17.

References

Affected products (1)

cpe:2.3:a:monstra:monstra:3.0.4:*:*:*:*:*:*:*

More vulnerabilities in Monstra

CVE-2021-40940 — Critical (CVSS 9.8): Monstra 3.0.4 does not filter the case of php, which leads to an unrestricted file upload vulnerability.
CVE-2021-36548 — Critical (CVSS 9.8): A remote code execution (RCE) vulnerability in the component /admin/index.php?id=themes&action=edit_template&filename=bl…
CVE-2020-25414 — Critical (CVSS 9.8): A local file inclusion vulnerability was discovered in the captcha function in Monstra 3.0.4 which allows remote…
CVE-2020-13384 — High (CVSS 8.8): Monstra CMS 3.0.4 allows remote authenticated users to upload and execute arbitrary PHP code via…
CVE-2018-16608 — High (CVSS 8.8): In Monstra CMS 3.0.4, an attacker with 'Editor' privileges can change the password of the administrator via an…
CVE-2018-9037 — High (CVSS 8.8): Monstra CMS 3.0.4 allows remote code execution via an upload_file request for a .zip file, which is automatically…

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