CWE
22
Advisory Published
Updated

CVE-2021-40098: Path Traversal

First published: Mon Sep 27 2021(Updated: )

An issue was discovered in Concrete CMS through 8.5.5. Path Traversal leading to RCE via external form by adding a regular expression.

Credit: cve@mitre.org

Affected SoftwareAffected VersionHow to fix
Concretecms Concrete Cms<=8.5.5

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Frequently Asked Questions

  • What is CVE-2021-40098?

    CVE-2021-40098 is a vulnerability in Concrete CMS through version 8.5.5 that allows path traversal leading to remote code execution (RCE) via an external form.

  • How severe is CVE-2021-40098?

    CVE-2021-40098 has a severity rating of 9.8, which is considered critical.

  • Which versions of Concrete CMS are affected by CVE-2021-40098?

    Concrete CMS versions up to and including 8.5.5 are affected by CVE-2021-40098.

  • How can I fix CVE-2021-40098?

    To fix CVE-2021-40098, it is recommended to update Concrete CMS to a version beyond 8.5.5.

  • Where can I find more information about CVE-2021-40098?

    You can find more information about CVE-2021-40098 in the release notes of Concrete CMS version 8.5.6 and the associated HackerOne report.

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