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Back to active CVEs
Medium · CVSS 5.3CVE-2026-105686

Penpot: Repeated chunk index causes temporary-storage amplificationCVE-2026-105686

Answer in brief

CVE-2026-105686 records a Medium severity (CVSS 5.3) vulnerability in Penpot: Repeated chunk index causes temporary-storage amplification. The current sources do not mark it as known exploited. The current feed maps penpot/penpot (generic). Check affected ranges and fixed versions before updating.

Analysis pending evidence review

HOL Guard separates source facts from reviewed analysis. See the methodology.

Published Oct 5, 2026Updated Oct 5, 2026Source checked Oct 5, 2026First seen by HOL Oct 5, 2026Material review Oct 5, 2026
Upstream Advisory

Key facts

Risk
Medium · CVSS 5.3
Exploitation
Not marked as known exploited
Affected software
1 mapped package or product
Fix availability
Available

Why this deserves its current priority

CVSS is 5.3. The current sources do not mark it as known exploited. Treat this as a source-backed prioritization signal, not a statement about your environment.

Analysis status

Analysis pending evidence review

Factual feed record only; HOL analysis is not approved for indexing. Read the methodology.

Affected scope and exposure questions

The current feed maps penpot/penpot (generic). Check affected ranges and fixed versions before updating.

Mapped affected packages and fixed versions
PackageAffected rangeFixed version
penpot/penpotgeneric<2.18.02.18.0

Recommended response

  1. 1Check inventory. Check lockfiles and deployed manifests for penpot/penpot.
  2. 2Review the reported fix. Update penpot/penpot to 2.18.0 if you use the affected versions. Test the change in a non-production environment first.

Evidence timeline and material changes

  1. Published upstream

    Oct 5, 2026

    Evidence: source:cvelist:source_dates:source-dates:record

  2. Source modified

    Oct 5, 2026

    Evidence: source:cvelist:source_dates:source-dates:record

  3. First seen by HOL

    Oct 5, 2026

Sources and claim methodology

  • GitHub security advisorygithub.com
  • GitHub security advisorygithub.com
  • GitHub security advisorygithub.com
Upstream source description

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.

Quoted source text, attributed separately from HOL analysis.

Related CVEs

  • Penpot: Share-link page-scope escape — comment RPCs leak comment content, author identity, and all page-ids for pages outside the share scopeSame penpot/penpot package
  • Penpot: A team admin (non-owner) can remove the team owner via ::delete-team-member — missing owner-protectionSame penpot/penpot package
  • Penpot: Team admin can escalate to owner via team invitation (missing owner-role guard on the invitation path)Same penpot/penpot package
  • Penpot: SSRF guard bypass via IPv6 transition addresses (NAT64/6to4/Teredo) in webhook delivery and media downloadSame penpot/penpot package
  • Penpot: Server-side session not invalidated on logout; stale auth-token cookie remains valid for full profile accessSame penpot/penpot package
  • Penpot: Authenticated OS Command Injection in Penpot SVG Exporter via Legacy fill-colorSame penpot/penpot package

Record context

Vulnerability class
Vulnerability
EPSS
Not reported
CWE IDs
CWE-770
Source
CVE List V5
Source checked
Oct 5, 2026
References
3 linked sources
Open source record