---
id: CVE-2026-105686
title: Penpot is an open-source design and prototyping platform
summary: >-
  Penpot is an open-source design and prototyping platform. Prior to 2.18.0, the
  chunked media upload RPC validates that a chunk index is in range but neither
  rejects an already stored index nor replaces its previous object. An
  authenticat…
severity: medium
cvss: 5.3
cvssVector: 'CVSS:4.0/AV:N/AC:L/AT:N/PR:L/UI:N/VC:N/VI:N/VA:L/SC:N/SI:N/SA:N'
cwe:
  - CWE-770
vendor: penpot
product: penpot
affected:
  - penpot < 2.18.0
published: '2026-10-05'
updated: '2026-10-05'
sourceUpdated: '2026-10-05T20:17:17.940'
source: NVD
sourceUrl: 'https://nvd.nist.gov/vuln/detail/CVE-2026-105686'
references:
  - url: >-
      https://github.com/penpot/penpot/commit/06239844b10b123b7757969ab7618b201d3aba3b
    label: security-advisories@github.com
  - url: 'https://github.com/penpot/penpot/releases/tag/2.18.0'
    label: security-advisories@github.com
  - url: 'https://github.com/penpot/penpot/security/advisories/GHSA-qvq5-c536-pmx8'
    label: security-advisories@github.com
tags:
  - nvd
  - cve.org
cvssSource: cna
ingestedAt: '2026-10-05T20:32:56.650Z'
---

## Overview

Penpot is an open-source design and prototyping platform. Prior to 2.18.0, the chunked media upload RPC validates that a chunk index is in range but neither rejects an already stored index nor replaces its previous object. An authenticated user can repeatedly upload the same valid index, causing each successful request to allocate another temporary object and increasing stored bytes beyond the upload session's declared logical size. Assembly detects the inconsistent chunk count only after allocation. This issue is fixed in version 2.18.0.

## Remediation

Refer to the linked advisories for vendor-supplied fixes and affected version ranges.