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CVE-2024-8661: Concrete CMS Stored XSS in the "Next&Previous Nav" block

September 16, 2024

Concrete CMS versions 9.0.0 to 9.3.4 and below 8.5.19 are vulnerable to Stored XSS in the “Next&Previous Nav” block. A rogue administrator could add a malicious payload by executing it in the browsers of targeted users. Since the “Next&Previous Nav” block output was not sufficiently sanitized, the malicious payload could be executed in the browsers of targeted users.

References

  • documentation.concretecms.org/9-x/developers/introduction/version-history/934-release-notes
  • documentation.concretecms.org/developers/introduction/version-history/8519-release-notes
  • github.com/advisories/GHSA-xmxj-v2q8-8qx6
  • github.com/concretecms/concretecms
  • github.com/concretecms/concretecms/commit/3e548b416ae32efee1e0a42c4510be1106c7eb25
  • github.com/concretecms/concretecms/commit/ce5ee2ab83fe8de6fa012dd51c5a1dde05cb0dc4
  • github.com/concretecms/concretecms/pull/12204
  • nvd.nist.gov/vuln/detail/CVE-2024-8661

Code Behaviors & Features

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Affected versions

All versions before 8.5.19, all versions starting from 9.0.0 before 9.3.4

Fixed versions

  • 8.5.19
  • 9.3.4

Solution

Upgrade to versions 8.5.19, 9.3.4 or above.

Impact 2.4 LOW

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

Learn more about CVSS

Weakness

  • CWE-79: Improper Neutralization of Input During Web Page Generation ('Cross-site Scripting')

Source file

packagist/concrete5/concrete5/CVE-2024-8661.yml

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