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CVE-2026-48356: Adobe Commerce and Magento Unrestricted Upload of File with Dangerous Type Vulnerability

CVE-2026-48356 is rated critical with a CVSS v3.1 base score of 9.3 and affects Adobe Commerce and Magento, along with 2 other products in NVD’s configuration data. Per its scoring, it can be exploited over the network, without authentication. CISA added it to its Known Exploited Vulnerabilities catalog on 2026-10-27, which means exploitation in the wild has been observed.

Vulnerability description

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.

Severity breakdown

CVSS v3.1 9.3: CVSS:3.1/AV:N/AC:L/PR:N/UI:R/S:C/C:H/I:H/A:N

  • Attack vector: Network. Exploitable remotely over the network, with no need for local or physical access.
  • Attack complexity: Low. No special conditions; the attack can be repeated reliably.
  • Privileges required: None. No account or prior access is needed.
  • User interaction: Required. A user must take an action, such as opening a file or following a link.
  • Scope: Changed. Impact reaches beyond the vulnerable component to other resources.
  • Confidentiality impact: High. Total loss of confidentiality; sensitive data can be fully disclosed.
  • Integrity impact: High. Total loss of integrity; data or system state can be fully modified.
  • Availability impact: None. No effect on availability.

Underlying weakness

CWE-434: Unrestricted Upload of File with Dangerous Type

The product allows the upload or transfer of dangerous file types that are automatically processed within its environment.

Affected products

  • Adobe Commerce: 2.4.4; 2.4.4 p1; 2.4.4 p10; 2.4.4 p11; 2.4.4 p12; 2.4.4 p13; 2.4.4 p14; 2.4.4 p15; 2.4.4 p16; 2.4.4 p17; 2.4.4 p18; 2.4.4 p2
  • Adobe Magento: 2.4.6; 2.4.6 p1; 2.4.6 p10; 2.4.6 p11; 2.4.6 p12; 2.4.6 p13; 2.4.6 p14; 2.4.6 p15; 2.4.6 p2; 2.4.6 p3; 2.4.6 p4; 2.4.6 p5
  • Adobe Commerce B2b: 1.3.3; 1.3.3 p1; 1.3.3 p10; 1.3.3 p11; 1.3.3 p12; 1.3.3 p13; 1.3.3 p14; 1.3.3 p15; 1.3.3 p16; 1.3.3 p17; 1.3.3 p18; 1.3.3 p2
  • Adobe I/O Events: from 1.6.0 before 1.21.0

References