Actively exploited · Published Jul 14, 2026 · Assigned by adobe
CVE-2026-48356Adobe Commerce | Unrestricted Upload of File with Dangerous Type (CWE-434)
Critical 9.3 Exploited
In plain English
A critical-severity unrestricted file upload in Adobe Commerce from Adobe. Attackers are actively exploiting it in the wild (listed by CISA on October 27, 2026). The chance it is exploited in the next 30 days is estimated at 47.5% (higher than 99% of all known vulnerabilities). Ready-made attack tooling exists: public proof-of-concept code. 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.
CISA guidance
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.
Federal agencies must remediate by Nov 10, 2026.
Official 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.
Affected products (as reported)
| Vendor | Product | Versions |
|---|---|---|
| Adobe | Adobe Commerce | 0 – through 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 – through 1.5.3, 1.5.2-p5, 1.4.2-p10, 1.3.4-p17, 1.3.3-p18 |
| Adobe | Magento Open Source | 0 – through 2.4.9, 2.4.8-p5, 2.4.7-p10, 2.4.6-p15 |
| Adobe | Adobe Commerce Events | 0 – through 1.20.0 |
Weakness: CWE-434 · Vector: CVSS:3.1/AV:N/AC:L/PR:N/UI:R/S:C/C:H/I:H/A:N
References
- https://helpx.adobe.com/security/products/magento/apsb26-73.html vendor-advisory
- https://sansec.io/research/magento-cms-block-loader-deepveindrilling#indicators-of-compromise third-party-advisory
- https://sansec.io/research/polyshell-mass-attack-wave third-party-advisory
- https://www.cisa.gov/known-exploited-vulnerabilities-catalog?field_cve=CVE-2026-48356 government-resource