CVE-2026-48356 Adobe Commerce and Magento: dangerous file upload
In plain words: The program accepts files it should refuse, such as programs disguised as ordinary uploads. The attacker can place and run their own tools on the server.
Confirmed exploited by CISA on · US federal patch deadline Nov 10, 2026
What to do
- Install Adobe's security update for Commerce and Magento. If no update exists, follow the vendor's workaround or stop using the product until one ships.
- Keep a list of every internet-facing server you run so nothing is forgotten.
- Patch anything in this catalog first, ahead of normal patch cycles.
- Put admin and file-transfer apps behind a VPN or single sign-on instead of the open internet.
Who is affected
Work IT. Aimed mostly at company systems — you are affected through the companies you use, not your own phone.
What's at risk: Mass data theft and ransomware: a single flaw in a file-transfer or email server has exposed thousands of organisations at once.
The details
- Official name
- Adobe Commerce and Magento Unrestricted Upload of File with Dangerous Type Vulnerability
- Product
- Adobe Commerce and Magento
- CISA description
- 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.
- Type of flaw
- Dangerous file upload (CWE-434)
- Confirmed exploited
- Oct 27, 2026
- US federal patch deadline
- Nov 10, 2026
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Answering about CVE-2026-48356 ·
Questions about CVE-2026-48356
Is CVE-2026-48356 being exploited?
Yes. CISA added CVE-2026-48356 to its Known Exploited Vulnerabilities catalog on Oct 27, 2026, which means there is reliable evidence of real-world attacks.
How do I fix CVE-2026-48356?
Install Adobe's security update for Commerce and Magento. If no update exists, follow the vendor's workaround or stop using the product until one ships. Keep a list of every internet-facing server you run so nothing is forgotten.
Am I affected by CVE-2026-48356?
Only if you use Adobe Commerce and Magento. Aimed mostly at company systems — you are affected through the companies you use, not your own phone.