CVE-2026-107914
Received Received - Intake

Insecure Configuration Export in Backdrop CMS

Publication date: 2026-10-09

Last updated on: 2026-10-09

Assigner: MITRE

Description
Backdrop CMS 1.34 before 1.34.5 and 1.35 before 1.35.1 doesn't sufficiently protect configuration exports when delivering a compressed archive. This vulnerability is mitigated by the fact that an export must have been previously requested by someone with the "Synchronize, import, and export configuration" permission. NOTE: CVE-2026-107914 refers to the vulnerability in which config.admin.inc does not ensure that a file_unmanaged_delete operation occurs. Therefore, many archives could persist: config.tar.gz, config_0.tar.gz, config_1.tar.gz, etc. There is a separate config.module issue that could allow remote access by an anonymous user, but only for the one filename config.tar.gz.

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Meta Information

Published
2026-10-09
Last Modified
2026-10-09
Generated
2026-10-09
AI Q&A
2026-10-09
EPSS Evaluated
N/A
NVD
CVE-2026-107914
EUVD
EUVD-2026-95489

Affected Vendors & Products

Showing 2 associated CPEs
Vendor Product Version / Range
backdropcms Backdrop 1.34.0
backdropcms Backdrop 1.35.0

Helpful Resources

Exploitability

CWE
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KEV
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CWE ID Description
CWE-459 The product does not properly "clean up" and remove temporary or supporting resources after they have been used.
CWE-497 The product does not properly prevent sensitive system-level information from being accessed by unauthorized actors who do not have the same level of access to the underlying system as the product does.

Attack-Flow Graph

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Executive Summary

This vulnerability affects Backdrop CMS versions 1.34 before 1.34.5 and 1.35 before 1.35.1. It involves insufficient protection of configuration exports when delivered as a compressed archive. An attacker needs prior access by a user with the Synchronize, import, and export configuration permission to exploit this.

Detection Guidance

Check Backdrop CMS version with: drush status or visit /admin/reports/status. If using versions 1.34.x before 1.34.5 or 1.35.x before 1.35.1, the system is vulnerable. Review recent configuration exports in /files/config_*/ directory for unauthorized access.

Impact Analysis

An attacker could access sensitive configuration data through exported compressed archives. This may lead to exposure of system settings, user permissions, or other confidential information if an authorized user with export permissions is compromised.

Compliance Impact

This vulnerability could lead to unauthorized disclosure of personal or sensitive data, potentially violating GDPR or HIPAA requirements for data protection and confidentiality. Organizations must ensure proper access controls and encryption to mitigate such risks.

Mitigation Strategies
  • Upgrade Backdrop CMS to version 1.35.1 or later immediately.
  • Review and revoke access for users with 'Synchronize, import, and export configuration' permission if not required.
  • Monitor configuration export files in /files/config_*/ directory for suspicious activity.

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