Severity: CriticalAction: Review

Critical BlockStrap flaw lets hackers run code on Magento servers

Researchers warn that hackers could soon exploit a maximum-severity vulnerability (CVE-2026-103849) affecting Magento and Adobe Commerce, potentially allowing them to execute arbitrary PHP code on store servers.

Excerpt from the primary source: BleepingComputer

Who is affected

Security professionals

What you should do · Review

Review whether your organization uses the affected products and assess exposure using the linked advisories.

Automated guidance based on this story's classification. Check the linked advisories for specifics.

Sources

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Original reporting

Critical BlockStrap flaw lets hackers run code on Magento servers BleepingComputer · bleepingcomputer.com · Oct 16, 2026 · Primary source
Severity: HighAction: ReviewExploitation: Suspected

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Why it matters

There are signs this may already be exploited, which usually shortens the time available to patch.

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Patch

Apply the vendor's security update for the affected products.

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Patch

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