CVE-2026-56309: Capgo 0 to before 12.128.2

CVE-2026-56309. CVSS 3.1 base score 5.4 (MEDIUM, Vendor/CNA). EPSS 0.00356 (percentile 0.28134), scored 24-Oct-2026.

Affected technology

Capgo · 0 to before 12.128.2
Capgo

Description’s affected range: before 12.128.2 fails to enforce plan/quota restrictions on the /files/upload/attachments endpoint

Component: Not specified by the source

Attack conditions (Vendor/CNA, CVSS 4.0): Network (remote) · Low privileges required · No user interaction required

What an attacker can do

Attackers can upload arbitrary attachments using upload-scoped API keys that bypass plan checks, persist outside normal bundle metadata, and survive app deletion, enabling storage and bandwidth abuse. Vendor/CNA’s CVSS 4.0 assessment (base score 5.3/10) rates confidentiality impact as none; integrity and availability impact as low.

Published 25-Oct-2026 19:52 UTC

CWE: CWE-770
CCR priority: 21.7 /100 (P4)
CVSS 3.1: 5.4 /10 · CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:U/C:N/I:L/A:L · Vendor/CNA
EPSS: 0.00356 · percentile 0.29006 · 2026-10-25
KEV: no

Provenance

FIRST EPSS daily exploit-probability · Source record · observed 2026-10-25 19:52:47.952465+00:00 UTC
NVD CVE API 2.0 · Source record · observed 2026-10-25 19:51:06.643138+00:00 UTC

Stable permalink: https://cybercodered.org/item/cve-cve-2026-56309.html