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.
Attack Parameters
Attack Vector
Local
Requires local access
Attack Complexity
High
Difficult to exploit
Privileges Required
None
No privileges needed
User Interaction
None
No user interaction needed
Impact Assessment
Confidentiality
High
Complete data leak
Integrity
High
Complete data modification
Availability
None
No disruption
CVSS Vector v3.1
Vulnerable Products 2
| Configuration | From (including) | Up to (excluding) |
|---|---|---|
|
Backdropcms Backdrop
cpe:2.3:a:backdropcms:backdrop:*:*:*:*:*:*:*:*
|
1.34.0
|
1.34.5
|
|
Backdropcms Backdrop
cpe:2.3:a:backdropcms:backdrop:*:*:*:*:*:*:*:*
|
1.35.0
|
1.35.1
|