CVE-2026-103849: Adobe Commerce | Improper Neutralization of Special Elements Used in a Template Engine (CWE-1336)
A template-engine flaw can allow arbitrary code execution without an account.
CVE published 2026-10-13 · Record updated 2026-10-20 · Snapshot checked 24 October 2026
Why this matters
A template-engine flaw can allow arbitrary code execution without an account.
CVSS 3.1: 10 (CRITICAL). Source: CVE assigning authority.
A severity score describes the vulnerability, not the probability that your own website has been compromised. Exposure depends on the installed version, configuration and reachable code path.
When to check your system
Affected Commerce and Magento Open Source releases listed in Adobe’s October bulletin.
How to address it
Apply the matching October update. The September CVE-2026-75650 hotfix must also be present.
Record the installed package and vendor build, check the advisory’s prerequisites, back up, apply the vendor fix and test the affected site functions. Distribution packages may include backported fixes without changing the upstream version number.
Sources
This page summarises a selected advisory. It is not evidence that a particular website is vulnerable. Where an advisory covers several CVEs, check the linked record for this CVE’s exact affected range.