TI-2026-67734 Aliases CVE-2026-105314 GHSA-5557-484j-55xw

Path traversal in Papermerge upload API allows remote code execution

HIGH 68CWE-24Published 2026-10-05 · Updated 2026-10-06

Key facts

Attack vector: Network
Privileges required: Low
User interaction: None
Attack complexity: High
Impact type: —
Confidentiality · integrity · availability: High · High · High
Fix status: No fix listed

Attack profile from CVSS 3.1 · CNA. Fix status from CNA.

Summary

Papermerge, from version 3.5.3, has a path traversal flaw (CWE-24) in the /api/documents/upload endpoint. A standard user with low privileges can use directory traversal to write a Python .pth file into site-packages, and its code runs the next time the Python interpreter starts, allowing remote code execution. A proof-of-concept exploit is linked in the references.

Written with Claude Haiku 5.5 from the sources below · 2026-10-29

Description from the CNA

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.

Why it matters now

Exploitation Proof of concept CISA SSVC · not in CISA KEV

EPSS 0.0113 66th percentileScored 2026-11-07

Public exploit Yes 1 exploit referenceTagged by the CNA

Fix No fix listed No fixed version in the sources yet

SSVC decision points

CISA ADP · SSVC 2.0.3

Exploitation: Poc
Automatable: No
Technical impact: Total

The decision (Track, Attend, Act) also depends on your mission and well-being impact; see CISA's SSVC guide.

Affected products

Vendor	Product	Affected versions	Fixed in	Status	Source
papermerge	Papermerge	3.5.3	—	No fix listed	CNA

Papermerge Vendorpapermerge Affected 3.5.3 Fixed in — No fix listed CNA

Remediation

The sources list no fixed version for Papermerge.

Written with Claude Haiku 5.5 from the sources below · 2026-10-29

Timeline

2026-10-05 Threatist record created from CVE-2026-105314
2026-10-05 Alias added: GHSA-5557-484j-55xw
2026-10-05 Priority changed: MEDIUM → LOW
2026-10-06 CISA SSVC decision points changed
2026-10-06 Priority changed: LOW → HIGH

References

Exploit 1

https://github.com/kashishtopi/cve-pocs/blob/main/papermerge-core-arbitrary-file-write-rce/HR-papermerge-core-path-traversal-rce.pdf

Other 3

TI-2025-09371 Papermerge DMS Authorization Token improper authorization CVSS 4.0MEDIUM 5.3
TI-2026-74117 Missing authorization in Papermerge Core shared nodes API CVSS 4.0HIGH 7.7
TI-2026-74116 Missing authorization in Papermerge Core page management and OCR CVSS 4.0HIGH 7.7
TI-2020-17690 Multiple cross-site scripting (XSS) vulnerabilities in Papermerge before 1.5.2 allow… CVSS 3.1MEDIUM 6.1
TI-2026-74118 Missing authorization in Papermerge Core exposes other groups' tags CVSS 4.0LOW 2.3

Sources

This product uses the NVD API but is not endorsed or certified by the NVD. Sources and licences