Vulnerability Snapshot
CVE-2026-13723 is rated CRITICAL — exploitation is trivial or already observed in the wild and impact is severe. Patch immediately, not on the next maintenance window.
Affected technology: edge.
Executive Summary
Overview A vulnerability in the zipx.Unzip extraction routine of Develar’s app-builder allows an attacker to overwrite arbitrary files on macOS using Apple File System (APFS). The issue arises from a combination of Unicode normalization collisions and unsafe symlink-following behavior. APFS treats certain Unicode equivalent filenames as identical (e.g., ß ↔ ss), while app builder performs no canonical normalization before validating or writing paths. Description Develar’s app-builder is a comman
Source
How Vulnios Detects This
Vulnios scans for this vulnerability using Trivy and Grype for CVE matching against your container images and OS package manifests. Run a scan against your environment to see whether you are exposed; findings are linked back to the original CVE record so triage starts with the patch path already known.
AI Security Advisor
Powered by Gemini
Get AI-powered security recommendations tailored to this specific threat — including risk assessment, detection guidance, MITRE ATT&CK mapping, and actionable remediation steps.
Affected Products
Sources
Related Threat Alerts
- Rapid7 Blog Advisory — Jul 15, 2026
- ThreatsDay: AI Compute Hijacking, Apple Email Flaw, BlueHammer Ransomware + 14 Stories
- Apple Patches Dozens of Vulnerabilities Across iOS, macOS, and Safari
- SANS Internet Storm Center Advisory — Jun 30, 2026
- Apple Patches 30+ iOS, macOS, Safari Flaws, Including AI-Discovered WebKit Bugs
- New Exploit Bypasses Apple’s Boot Defenses, Affects Millions of iPhones
Frequently Asked Questions
What is CVE-2026-13723?
CVE-2026-13723 is a critical-severity vulnerability tracked under the Common Vulnerabilities and Exposures program. Overview A vulnerability in the zipx.Unzip extraction routine of Develar’s app-builder allows an attacker to overwrite arbitrary files on macOS using Apple File System (APFS). The issue arises from a
Am I affected?
Check whether your environment runs edge. If you operate any of those, treat yourself as in scope until you have evidence otherwise. A Vulnios scan will identify the exact assets carrying the affected version.
How urgent is the response?
Critical: do not wait for your normal patch cycle. Verify exposure today, apply the vendor patch immediately, and add detection rules for any post-exploit indicators.
How do I remediate?
Apply the vendor patch listed in the upstream advisory linked under Sources. If the patch is not yet available, follow the vendor-supplied workaround (often a config flag or feature disable) and add detections for the published exploit pattern in your SIEM. Re-scan after the patch lands to confirm the finding clears.
Where can I track exploitation activity?
Watch CISA's Known Exploited Vulnerabilities catalog for CVE-2026-13723. Cross-reference with public exploit databases and your own SIEM/IDS for indicator-of-compromise patterns. Vulnios tracks KEV status automatically and surfaces it on the asset findings view.
How does Vulnios help with this?
Vulnios continuously cross-references your asset inventory against the live CVE feed (NVD, vendor advisories, CISA KEV, and curated OSINT). When a new CVE matches your environment, you get a prioritized finding with the severity, KEV status, exploit-prediction (EPSS), and a direct path to the vendor patch. You can start a free scan from the homepage.
Protect Your Organization
Monitor CVEs, scan for vulnerabilities, and get real-time threat alerts — all in one platform.
Get instant alerts on Telegram
Join our public channel for real-time critical CVE alerts.
Follow @vulnios