CVEs / CVE-2026-48356
CVE-2026-48356: Adobe Commerce and Magento Unrestricted Upload of File with Dangerous Type Vulnerability
- Known exploited in the CISA KEV catalog since 27 Oct 2026
- critical 9.3 CVSS 3.1 (NVD)
- EPSS 44.5% chance of exploitation in the next 30 days, higher than 98% of CVEs (30 Oct 2026)
- Last changed at its sources
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Summary
Adobe Commerce and Magento contain 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.
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 and fixed versions
| Product | Affected | Fixed in |
|---|---|---|
| Adobe Adobe Commerce | up to and including 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 | up to and including 1.5.3, 1.5.2-p5, 1.4.2-p10, 1.3.4-p17, 1.3.3-p18 | — |
| Adobe Magento Open Source | up to and including 2.4.9, 2.4.8-p5, 2.4.7-p10, 2.4.6-p15 | — |
| Adobe Adobe Commerce Events | up to and including 1.20.0 | — |
Exploitation
| In CISA KEV since | 27 Oct 2026 |
|---|---|
| Due date for US federal agencies | 10 Nov 2026 |
| Used in ransomware campaigns | Unknown |
| Required action | 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. |
Severity
| CVSS 3.1 | 9.3 criticalCVSS:3.1/AV:N/AC:L/PR:N/UI:R/S:C/C:H/I:H/A:NScored by NVD |
|---|---|
| Weakness | CWE-434 |
On the Stackurity blog
References
- CVE-2026-48356 on NVD
- CVE-2026-48356 in the CISA KEV catalog
- https://www.adobe.com/trust/security/products/commerce/apsb26-73.html (cited by CISA)
- https://www.cisa.gov/news-events/directives/bod-26-04-prioritizing-security-updates-based-risk (cited by CISA)
- https://www.cisa.gov/news-events/directives/bod-26-04-implementation-guidance-prioritizing-security-updates-based-risk (cited by CISA)
- CVE-2026-48356 on OSV
- 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 US Government Resource
Sources
Exploitation status from the CISA Known Exploited Vulnerabilities catalog. EPSS scores from FIRST. Descriptions, severity and references from the National Vulnerability Database. Open-source package versions from OSV (CC-BY 4.0). Text is shown as each source states it; Stackurity does not edit it. Check the vendor's advisory before acting.
This product uses data from the NVD API but is not endorsed or certified by the NVD.