| Package | Affected versions | Patched versions |
|---|---|---|
| unstructured | < 0.18.18 | 0.18.18 |
| unstructured | < 0.18.18 | 0.18.18 |
A Path Traversal vulnerability in the partition_msg function allows an attacker to write or overwrite arbitrary files on the filesystem when processing malicious MSG files with attachments.
An attacker can craft a malicious .msg file with attachment filenames containing path traversal sequences (e.g.,
../../../etc/cron.d/malicious). When processed with process_attachments=True, the library writes the attachment to an
attacker-controlled path, potentially leading to:
The vulnerability affects the MSG file partitioning functionality when process_attachments=True is enabled.
The library does not sanitize attachment filenames in MSG files before using them in file write operations, allowing directory traversal sequences to escape the intended output directory.
Until patched, users can:
process_attachments=False when processing untrusted MSG filesRunning one of these products? Scan your site to see whether it exposes a vulnerable version.
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