CVE-2026-48356 is a critical unrestricted file upload vulnerability affecting Adobe Commerce, Adobe Commerce B2B, Magento Open Source, and the Adobe Commerce Webhooks Plugin. The flaw is classified as CWE-434 and stems from insufficient restriction of dangerous file types during upload handling. Successful exploitation can result in arbitrary code execution in the context of the current user. Available descriptions also indicate the issue can be leveraged to inject malicious script content into web pages, creating a path to privilege escalation and compromise of a victim account or session. Adobe rates the issue as having changed scope, and exploitation requires user interaction, such as a victim visiting a maliciously crafted URL or interacting with a compromised web page.
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What it means. What to do now. Patch path, mitigations, and the assume-compromise checklist.
What an attacker gets, and what they’ve been doing with it.
If you can’t patch tonight, do this now.
Patch, then assume compromise.
No public exploits tracked yet. Mallory keeps watching.
No public exploit code observed for this vulnerability.
Products and vendors Mallory has correlated with this vulnerability. Open in Mallory to drill down to specific CPE configurations and version ranges.
Vendor-confirmed product mapping. Mallory continuously reconciles this list against your asset inventory.
10 sources tracked across advisories, community write-ups, and news. New activity surfaces here as Mallory finds it.
A critical Adobe Commerce vulnerability that could lead to privilege escalation and arbitrary code execution.
A privilege escalation vulnerability in Adobe Commerce caused by failure to restrict upload of dangerous file types.
A specific vulnerability identified as CVE-2026-48356 affecting Adobe Commerce, Adobe Commerce B2B, Magento Open Source, and the Adobe Commerce Webhooks Plugin; patched/unaffected versions are listed in the content.
Query your assets running an affected version, and investigate the blast radius.
Every observed campaign linking this CVE to a named adversary.
Malware families riding this exploit, with evidence and IOCs.
YARA, Sigma, Snort, and vendor rules, auto-deployed to your SIEM.
Cross-references every affected SKU, including bundled OEM variants.
Community discussion across Reddit, Mastodon, and other social sources.