CVE-2025-34076

Description

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.

PUBLISHED Reserved 2025-04-15 | Published 2025-07-02 | Updated 2025-11-29 | Assigner VulnCheck

Problem types

CWE-22 Improper Limitation of a Pathname to a Restricted Directory ('Path Traversal')

Product status

Credits

Talha Karakumru finder

References

huntr.com/bounties/09218d3f-1f6a-48ae-981c-85e86ad5ed8b exploit

raw.githubusercontent.com/...iliary/gather/microweber_lfi.rb exploit

github.com/microweber/microweber product

huntr.com/bounties/09218d3f-1f6a-48ae-981c-85e86ad5ed8b exploit

github.com/...ommit/98d025467128ecc24195dcb56c533febc3c91af6 patch

github.com/...ommit/572bdc36b5b47923790016f6b961c8df53226855 patch

vulncheck.com/advisories/microweber-cms-lfi third-party-advisory

cve.org (CVE-2025-34076)

nvd.nist.gov (CVE-2025-34076)

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