CVE-2025-34076: Microweber CMS Authenticated Local File Inclusion via Backup API
An authenticated local file inclusion vulnerability exists in Microweber CMS versions < 1.2.11 through misuse of the backup management API. Authenticated users can abuse the /api/BackupV2/upload and /api/BackupV2/download endpoints to read arbitrary files from the underlying filesystem. By specifying an absolute file path in the src parameter of the upload request, the server may relocate or delete the target file depending on the web service user’s privileges. The corresponding download endpoint can then be used to retrieve the file contents, effectively enabling local file disclosure. This behavior stems from insufficient validation of user-supplied paths and inadequate restrictions on file access and backup logic.
Other sources
An authenticated local file inclusion vulnerability exists in Microweber CMS versions <= 1.2.11 through misuse of the backup management API. Authenticated users can abuse the /api/BackupV2/upload and /api/BackupV2/download endpoints to read arbitrary files from the underlying filesystem. By specifying an absolute file path in the src parameter of the upload request, the server may relocate or delete the target file depending on the web service user’s privileges. The corresponding download endpoint can then be used to retrieve the file contents, effectively enabling local file disclosure. This behavior stems from insufficient validation of user-supplied paths and inadequate restrictions on file access and backup logic.
— MITRE
Affected Software
Remediation
Event History
Frequently Asked Questions
What is the severity of CVE-2025-34076?
CVE-2025-34076 is classified as a medium severity vulnerability.
How do I fix CVE-2025-34076?
To fix CVE-2025-34076, upgrade Microweber CMS to version 1.2.12 or newer.
Who is affected by CVE-2025-34076?
CVE-2025-34076 affects users of Microweber CMS versions 1.2.11 and earlier.
What type of vulnerability is CVE-2025-34076?
CVE-2025-34076 is an authenticated local file inclusion (LFI) vulnerability.
Can CVE-2025-34076 be exploited remotely?
CVE-2025-34076 requires authenticated access, so it cannot be exploited remotely by unauthenticated users.