Unrestricted File Upload Vulnerability in Adobe Commerce Web Application
CVE-2026-48356

9.3CRITICAL

Key Information:

Vendor

Adobe
Status
Adobe Commerce
Adobe Commerce B2b
Magento Open Source
Adobe Commerce Events
Vendor
CVE Published:
14 July 2026

Badges

👾 Exploit Exists🟡 Public PoC🟣 EPSS 30%🦅 CISA Reported

What is CVE-2026-48356?

Adobe Commerce is vulnerable to an unrestricted file upload issue that may allow an attacker to upload files of potentially harmful types, leading to arbitrary code execution within the context of the current user. This security weakness can be exploited through user interaction, such as visiting a specially crafted URL or engaging with a compromised web page. Successful exploitation may allow the attacker to inject malicious scripts, which could result in increased privileges or control over the affected user's session.

CISA has reported CVE-2026-48356

CISA provides regional cyber and physical services to support security and resilience across the United States. CISA monitor the most dangerious vulnerabilities and have identifed CVE-2026-48356 as being exploited but is not known by the CISA to be used in ransomware campaigns. This is subject to change at pace

The CISA's recommendation is: Apply mitigations in accordance with vendor instructions, ensuring compliance with CISA’s BOD 26-04 Prioritizing Security Updates Based on Risk (see URL in Notes) guidance and CISA’s “Forensics Triage Requirements” (see URL in Notes). Follow applicable BOD 26-04 guidance for cloud services or discontinue use of the product if mitigations are unavailable. Stakeholders are responsible for evaluating each asset's internet exposure and ensuring adherence to BOD 26-04 patching guidelines.

Affected Version(s)

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 Commerce B2B 0 <= 1.5.3, 1.5.2-p5, 1.4.2-p10, 1.3.4-p17, 1.3.3-p18

Adobe Commerce Events 0 <= 1.20.0

Exploit Proof of Concept (PoC)

PoC code is written by security researchers to demonstrate the vulnerability can be exploited. PoC code is also a key component for weaponization which could lead to ransomware.

CVE-2026-48356
Created by piecar21

References

https://helpx.adobe.com/security/products/magento/apsb26-...
vendor-advisory

EPSS Score

30% chance of being exploited in the next 30 days.

CVSS V3.1

Score:
9.3
Severity:
CRITICAL
Confidentiality:
High
Integrity:
High
Availability:
High
Attack Vector:
Network
Attack Complexity:
Low
Privileges Required:
None
User Interaction:
Required
Scope:
Changed

Timeline

  • 🟡

    Public PoC available

  • 👾

    Exploit known to exist

  • 🦅

    CISA Reported

  • Vulnerability published

  • Vulnerability Reserved

.