Is CVE-2026-103849 known to be exploited?

It is not marked known-exploited in this record.

CVE-2026-103849

Users of Magento Open Source and Adobe Commerce should immediately check for available security updates from Adobe. Apply all available patches related to the BlockStrap extension. Monitor official Adobe and Magento security advisories for patch release. Verify the CVE status with MITRE CVE and NVD databases. Restrict extension installation to trusted sources and review server logs for suspicious activity.

Quick answers

What is CVE-2026-103849?: Users of Magento Open Source and Adobe Commerce should immediately check for available security updates from Adobe. Apply all available patches related to the BlockStrap extension. Monitor official Adobe and Magento security advisories for patch release. Verify the CVE status with MITRE CVE and NVD databases. Restrict extension installation to trusted sources and review server logs for suspicious activity.
How severe is CVE-2026-103849?: critical
Is CVE-2026-103849 known to be exploited?: It is not marked known-exploited in this record.
How should CVE-2026-103849 be mitigated?: Users of Magento Open Source and Adobe Commerce should immediately check for available security updates from Adobe. Apply all available patches related to the BlockStrap extension. Monitor official Adobe and Magento security advisories for patch release. Verify the CVE status with MITRE CVE and NVD databases. Restrict extension installation to trusted sources and review server logs for suspicious activity.

CVSS

—

Vendor

Magento

Published

Oct 17, 2026 · 03:24

Patch

Unknown / not confirmed

Affected products

Magento Open Source, Adobe Commerce

Mitigation

Critical BlockStrap Flaw Affects Magento and Adobe Commerce Servers

Security researchers have identified a critical vulnerability in the BlockStrap extension for Magento Open Source and Adobe Commerce. The flaw could allow threat actors to execute arbitrary PHP code on affected store servers. The vulnerability is tracked as CVE-2026-103849. Users are advised to verify the status of the CVE with official databases and apply available security updates from Adobe immediately.

11m

CVE-2026-103849

Quick answers

Related News

Critical BlockStrap Flaw Affects Magento and Adobe Commerce Servers