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CVE PROGRAM SOURCE RECORD5.9 Medium

CVE-2026-105695

Penpot: Missing authorization in chunked-upload assembly lets another authenticated user consume a victim's upload session

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.

Affected products

Version statuses are supplied by the assigning organization. Consult the original record for detailed ranges and platform conditions.

penpot penpot

  • < 2.18.0affected

References