Which products and versions are affected by CVE-2017-18048?

Affected: Monstra versions 3.0.4. The full list is in the CVE brief.

Is CVE-2017-18048 being exploited in the wild?

It is not listed in any known-exploited vulnerabilities catalog.

Is CVE-2017-18048 in the CISA KEV catalog?

No, it is not currently listed in the CISA Known Exploited Vulnerabilities catalog.

Is there a public exploit for CVE-2017-18048?

Public exploit code is available.

Is there a fix for CVE-2017-18048?

No fixed version is listed yet; check the vendor advisory for mitigations.

How urgently should CVE-2017-18048 be patched?

Brandefense priority: patch immediately, because it is very likely to be exploited soon.

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Vulnerability Intelligence

CVE-2017-18048

HighPublic exploit

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.

Published Jan 23, 2018 · Updated Jul 8, 2026

Key Facts

Patch immediately

CVE-2017-18048 is a high-severity vulnerability (CVSS 8.8 v3.1) affecting Monstra.
It is not listed in any known-exploited vulnerabilities catalog. Public exploit code is available.
EPSS estimates a 63% probability of exploitation in the next 30 days.
No fixed version is listed yet; check the vendor advisory for mitigations.
Brandefense priority: patch immediately, because it is very likely to be exploited soon.

CVSS v3.1

8.8

CVSS:3.0/AV:N/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:H

EPSS (30-day exploit likelihood)

63%

Higher than 99.2% of all scored CVEs

Exploited in the wild

No known

Not in a known-exploited catalog

Public exploit code

Available

Proof-of-concept or weaponized module

Get the full CVE-2017-18048 brief as a PDF

Every affected product and fixed release, exploitation status and a first 24 hours response checklist, emailed within minutes.

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.

Affected Products

1 affected entries in total

Product	Affected versions	Fixed in
MonstraMonstra	3.0.4	n/a

Timeline

Publicly disclosed
Jan 23, 2018
Last updated
Jul 8, 2026

Weakness Type

CWE-434 Unrestricted Upload of File with Dangerous Type

References

FAQ

Common Questions.

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.
Affected: Monstra versions 3.0.4. The full list is in the CVE brief.
It is not listed in any known-exploited vulnerabilities catalog.
No, it is not currently listed in the CISA Known Exploited Vulnerabilities catalog.
Public exploit code is available.
No fixed version is listed yet; check the vendor advisory for mitigations.
Brandefense priority: patch immediately, because it is very likely to be exploited soon.

Is CVE-2017-18048 Running On Your Attack Surface?

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