CVE-2023-48648

Name: CVE-2023-48648
Creator: NVD / NIST
Published: 2023-11-17T04:15:07.093+00:00
License: https://creativecommons.org/publicdomain/zero/1.0/

CRITICALCVSS 9.8/10EPSS 1.23%

Last modified Jun 17, 2026

CVE-2023-48648 is a critical-severity vulnerability rated 9.8/10 on the CVSS scale. Concrete CMS before 8.5.13 and 9.x before 9.2.2 allows unauthorized access because directories can be created with insecure permissions. File creation functions (such as the Mkdir() function) gives universal access (0777) to created folders by default. EPSS estimates a 1.23% chance of exploitation in the next 30 days.

Description

Concrete CMS before 8.5.13 and 9.x before 9.2.2 allows unauthorized access because directories can be created with insecure permissions. File creation functions (such as the Mkdir() function) gives universal access (0777) to created folders by default. Excessive permissions can be granted when creating a directory with permissions greater than 0755 or when the permissions argument is not specified.

Metrics

CVSS 3.1

9.8/10

CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H

EPSS Probability

1.23%

65.2th percentile

Probability of exploitation in the next 30 days. Learn more

Weakness Enumeration

Affected Software

Vendor	Product	Versions
Concretecms	Concrete Cms	< 8.5.13
Concretecms	Concrete Cms	>= 9.0, < 9.2.2

References

https://documentation.concretecms.org/developers/introduction/version-history/8513-release-notesRelease Notes
https://documentation.concretecms.org/developers/introduction/version-history/922-release-notesRelease Notes
https://www.concretecms.org/about/project-news/security/2023-11-09-security-blog-about-updated-cves-and-new-releaseRelease Notes, Vendor Advisory
https://documentation.concretecms.org/developers/introduction/version-history/8513-release-notesRelease Notes
https://documentation.concretecms.org/developers/introduction/version-history/922-release-notesRelease Notes
https://www.concretecms.org/about/project-news/security/2023-11-09-security-blog-about-updated-cves-and-new-releaseRelease Notes, Vendor Advisory

Timeline

Published: Nov 17, 2023
Last Modified: Jun 17, 2026
Status: Modified

Frequently Asked Questions

What is CVE-2023-48648?

How severe is CVE-2023-48648?

CVE-2023-48648 has a CVSS score of 9.8/10 (CRITICAL severity). The EPSS model estimates a 1.23% probability of exploitation in the next 30 days.

How do I fix CVE-2023-48648?

Check the vendor references and advisories linked above for patched versions and mitigation guidance. You can also run a Strix scan to test if your systems are affected.

Are you affected by CVE-2023-48648?

Run a free Strix scan to check your systems for this vulnerability.

Scan your code now

Source: NVD / NIST