critical · 9.3Actively exploited

Adobe Commerce and Magento Unrestricted Upload of File with Dangerous Type Vulnerability

CVE-2026-48356 · GHSA-p3ch-8535-fp8j · EUVD-2026-44420 · published 14 Jul 2026

Attackers are using this one right now. CISA added it to its Known Exploited Vulnerabilities list on 27 Oct 2026, and US federal agencies had to fix it by 10 Nov 2026. Treat it as urgent.

How serious is it

  • Severity: critical, CVSS score 9.3 out of 10.
  • No exploit prediction (EPSS) score yet.
  • Confirmed exploited in the wild (CISA KEV).
  • No public exploit in Exploit-DB.

Is your app affected by CVE-2026-48356?

Paste this prompt into Claude Code, Cursor or any AI coding tool: it runs a free Shippable scan of your project and fixes what it finds. Built with Lovable, Bolt or v0? Scan your live app. Or upload your package file.

Who is affected

  • Adobe Adobe Commerce Events: 0 ≤1.20.0
  • Magento Magento Open Source: 0 ≤2.4.9, 2.4.8-p5, 2.4.7-p10, 2.4.6-p15
  • Adobe Adobe Commerce: 0 ≤2.4.9, 2.4.8-p5, 2.4.7-p10, 2.4.6-p15, 2.4.5-p17, 2.4.4-p18
  • Adobe Adobe Commerce B2B: 0 ≤1.5.3, 1.5.2-p5, 1.4.2-p10, 1.3.4-p17, 1.3.3-p18

How to check

  1. Find out whether you run the affected product and which version, then compare it with the versions above.

How to fix

Copies a prompt for Claude Code, Cursor or Codex that asks it to check whether you run this product.
  1. Apply the vendor's update or mitigation from the references below. If there is none yet, limit exposure of the affected service until there is.
  2. If a vulnerable version was live, check your logs and rotate the secrets that server could read.

The advisory

Adobe Commerce is affected by an Unrestricted Upload of File with Dangerous Type vulnerability that could result in arbitrary code execution in the context of the current user, potentially gaining elevated access or control over the victim's account or session. Exploitation of this issue requires user interaction in that a victim must visit a maliciously crafted URL or interact with a compromised web page. Scope is changed.

Check your whole app

Dependencies are only half of it. Free and read-only: before you push, run npx shippable-dev scan localhost:3000 in your project folder, no account needed. For your live app, you prove it's yours with a one-line tag first.

References

Merged from CISA KEV, ENISA EUVD. Last updated 28 Oct 2026. All vulnerabilities · RSS · JSON

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