Penpot is an open-source design and prototyping platform. Prior to 2.18.0, assemble-chunks retrieves an upload session using only its session ID, while upload-chunk correctly scopes the lookup to the authenticated profile. An authenticated user who obtains another user's live, completed upload-session UUID can assemble the victim's chunks into the attacker's own file, team font, or project import, disclosing the uploaded bytes and deleting the victim's pending session. This issue is fixed in version 2.18.0.

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History

Mon, 05 Oct 2026 21:45:00 +0000

Type Values Removed Values Added
First Time appeared Penpot
Penpot penpot
Vendors & Products Penpot
Penpot penpot

Mon, 05 Oct 2026 21:30:00 +0000

Type Values Removed Values Added
Metrics ssvc

{'options': {'Automatable': 'no', 'Exploitation': 'poc', 'Technical Impact': 'partial'}, 'version': '2.0.3'}


Mon, 05 Oct 2026 20:15:00 +0000

Type Values Removed Values Added
Description Penpot is an open-source design and prototyping platform. Prior to 2.18.0, assemble-chunks retrieves an upload session using only its session ID, while upload-chunk correctly scopes the lookup to the authenticated profile. An authenticated user who obtains another user's live, completed upload-session UUID can assemble the victim's chunks into the attacker's own file, team font, or project import, disclosing the uploaded bytes and deleting the victim's pending session. This issue is fixed in version 2.18.0.
Title Penpot: Missing authorization in chunked-upload assembly lets another authenticated user consume a victim's upload session
Weaknesses CWE-862
References
Metrics cvssV3_1

{'score': 5.9, 'vector': 'CVSS:3.1/AV:N/AC:H/PR:L/UI:N/S:U/C:H/I:N/A:L'}


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cve-icon MITRE

Status: PUBLISHED

Assigner: GitHub_M

Published:

Updated: 2026-10-05T20:40:42.567Z

Reserved: 2026-10-05T17:48:58.627Z

Link: CVE-2026-105695

cve-icon Vulnrichment

Updated: 2026-10-05T20:40:18.735Z

cve-icon NVD

Status : Deferred

Published: 2026-10-05T20:17:20.017

Modified: 2026-10-05T21:16:34.983

Link: CVE-2026-105695

cve-icon Redhat

No data.

cve-icon OpenCVE Enrichment

Updated: 2026-10-05T21:30:19Z

Weaknesses