CVE-2026-13723: app-builder 0 through 4.2.0

CVE-2026-13723. CVSS 3.1 base score 6.5 (MEDIUM, Source advisory). EPSS 0.0048 (percentile 0.40445), scored 22-Oct-2026.

Affected technology

app-builder · 0 through 4.2.0
Develar

Component: Not specified by the source

Attack conditions (Source advisory, CVSS 3.1): Network (remote) · No privileges required · No user interaction required

What an attacker can do

An attacker can overwrite arbitrary files on macOS APFS by exploiting a Unicode Normalization Collision combined with symlink following behavior. Source advisory’s CVSS 3.1 assessment (base score 6.5/10) rates confidentiality impact as none; integrity and availability impact as low.

Published 24-Oct-2026 15:08 UTC

CWE: CWE-22, CWE-59
CCR priority: 26.1 /100 (P4)
CVSS 3.1: 6.5 /10 · CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:L/A:L · Source advisory
EPSS: 0.0048 · percentile 0.40513 · 2026-10-24
KEV: no

Provenance

FIRST EPSS daily exploit-probability · Source record · observed 2026-10-24 15:09:16.138216+00:00 UTC
NVD CVE API 2.0 · Source record · observed 2026-10-24 15:07:27.951960+00:00 UTC

Stable permalink: https://cybercodered.org/item/cve-cve-2026-13723.html