cvedb.io
CVE-2026-40521
HIGH · CVSS 8.8
EPSS exploitation probability: 0%
Published 2026-06-29T14:16:50.763 · Last modified 2026-06-30T14:16:26.747

Summary

FrontAccounting before 2.4.20 contains a path traversal vulnerability in the attachment upload handler that allows authenticated attackers to execute arbitrary code by uploading files with traversal sequences in the unique_name parameter. Attackers can supply path traversal sequences ../../../shell.php to write files outside the intended attachments directory into the web root, and by uploading PHP files without extension validation, achieve remote code execution as the web server user.

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References

This product uses data from the NVD API but is not endorsed or certified by the NVD. Informational only; not professional security advice.