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
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| 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 | |
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| Metrics |
cvssV3_1
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Status: PUBLISHED
Assigner: GitHub_M
Published: 2026-10-05T20:04:22.743Z
Updated: 2026-10-05T20:40:42.567Z
Reserved: 2026-10-05T17:48:58.627Z
Link: CVE-2026-105695
Updated: 2026-10-05T20:40:18.735Z
Status : Deferred
Published: 2026-10-05T20:17:20.017
Modified: 2026-10-05T21:16:34.983
Link: CVE-2026-105695
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