CVE-2026-105314

Description

Papermerge 3.5.3 allows remote code execution by a standard user via directory traversal in a /api/documents/upload call. A Python .pth file can be written to site-packages, and its code is executed upon the next start of the Python interpreter.

References

• https://github.com/kashishtopi/cve-pocs/blob/main/papermerge-core-arbitrary-file-write-rce/HR-papermerge-core-path-traversal-rce.pdf
• https://github.com/kashishtopi/cve-pocs/tree/main/papermerge-core-arbitrary-file-write-rce
• https://github.com/papermerge/papermerge-core/blob/master/papermerge/core/features/document/router.py
• https://github.com/papermerge/papermerge-core/blob/master/papermerge/core/pathlib.py