Medium 5.3Published Oct 5, 2026

CVE-2026-105686Penpot: Repeated chunk index causes temporary-storage amplification

Updated under an hour ago (2026-10-19 07:23 UTC)

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Every CVE for penpot

Exploited in the last 30 days

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.

CVSS: 5.3 MEDIUM (v4.0, CNA)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
Weakness (CWE): CWE-770
Known exploited: Not in CISA's KEV catalog
EPSS (exploitation in the next 30 days): Not loaded for this CVE
Assigned by: GitHub_M
NVD analysis: Deferred
Record last updated: Oct 6, 2026
First seen by InfoSec Signals: Oct 9, 2026

Affected products

Affected products

penpot penpot penpot:penpot (from the name)	before 2.18.0	CNA record

References

https://github.com/penpot/penpot/security/advisories/GHSA-qvq5-c536-pmx8x-refsource-confirm
https://github.com/penpot/penpot/commit/06239844b10b123b7757969ab7618b201d3aba3bx-refsource-misc
https://github.com/penpot/penpot/releases/tag/2.18.0x-refsource-misc

The CVE record on cve.org NVD's entry

The CVE record is authoritative. Products marked “from the name” were identified from the CNA's free-text names, not a CPE, and are matched less certainly. This product uses the NVD API but is not endorsed or certified by the NVD.