CVE-2026-105686

UNKNOWN 0.0

Penpot: Repeated chunk index causes temporary-storage amplification

CVSS Score

0.0

EPSS Score

0.0%

EPSS Percentile

0th

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.

CWE	CWE-770
Vendor	penpot
Product	penpot
Published	Oct 5, 2026

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Affected Versions

penpot / penpot

< 2.18.0

References

NVD ↗ CVE.org ↗ EPSS Data ↗

github.com: https://github.com/penpot/penpot/security/advisories/GHSA-qvq5-c536-pmx8 github.com: https://github.com/penpot/penpot/commit/06239844b10b123b7757969ab7618b201d3aba3b github.com: https://github.com/penpot/penpot/releases/tag/2.18.0