CVE-2026-105314 (CVSS 7.5)

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.

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CVSS v3.1 Score

7.5

HIGH

CVSS:3.1/AV:N/AC:H/PR:L/UI:N/S:U/C:H/I:H/A:H

EPSS — Exploit Prediction

0.0090

Probability of exploitation

0.58%

Percentile rank

EPSS estimates the probability that this vulnerability will be exploited in the wild within the next 30 days. A higher score means more likely to be exploited.

Weakness Type (CWE)

CWE-24 CWE-24

References

Other 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

Frequently Asked Questions

What is CVE-2026-105314? +

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. It has a CVSS v3.1 base score of 7.5 (HIGH).

How severe is CVE-2026-105314? +

CVE-2026-105314 has a CVSS v3.1 score of 7.5 out of 10, rated HIGH. This is a high-severity vulnerability that should be prioritized for patching. The EPSS score is 0.0090, placing it in the 1th percentile for exploitation probability.

How do I check if I'm vulnerable to CVE-2026-105314? +

You can use Secably's free Website Scanner to check your website for known vulnerabilities. For infrastructure scanning, use the Port Scanner to identify exposed services that may be affected. Check the vendor advisories linked above for specific patch and version information.

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