Description
Adobe Commerce is affected by an Improper Neutralization of Special Elements Used in a Template Engine 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. Exploitation of this issue does not require user interaction. Scope is changed.
Affected products
| Vendor | Product | Affected | Fixed |
|---|---|---|---|
| Adobe | Adobe Commerce | ≤ 2.4.9-2026-sep, 2.4.8-2026-sep, 2.4.7-2026-sep, 2.4.6-2026-sep, 2.4.5-2026-sep, 2.4.4-2026-sep | 2.4.10-alpha1,2.4.9-2026-oct, 2.4.8-2026-oct, 2.4.7-2026-oct, 2.4.6-2026-oct, 2.4.5-2026-oct, 2.4.4-2026-oct |
| Adobe | Adobe Commerce B2B | ≤ 1.5.3-2026-sep, 1.5.2-2026-sep, 1.4.2-2026-sep, 1.3.4-2026-sep, 1.3.3-2026-sep | 1.5.4-alpha1,1.5.3-2026-oct, 1.5.2-2026-oct, 1.4.2-2026-oct, 1.3.4-2026-oct, 1.3.3-2026-oct |
| Adobe | Magento Open Source | ≤ 2.4.9-2026-sep, 2.4.8-2026-sep, 2.4.7-2026-sep | 2.4.10-alpha1,2.4.9-2026-oct, 2.4.8-2026-oct, 2.4.7-2026-oct |
Public exploits
Exploit or proof-of-concept code for this vulnerability is publicly available, which lowers the bar for attackers. Treat it as a reason to patch sooner.
GitHub 1 repository
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dinosn/cve-2026-103849-blockstrap-lab ★ 3 · Oct 18, 2026
CVE-2026-103849 (BlockStrap) reproduction lab: unauthenticated {{block}} injection on Magento 2.4.9 via guest GraphQL, A/B vs APSB26-153; command execution only through a labeled synthetic gadget, no…
Sources: PoC-in-GitHub, Metasploit Framework, Exploit-DB — updated daily. Only links are listed; no exploit code is hosted here.
Advisories 2
- NCSC-2026-0436 Kwetsbaarheden verholpen in Adobe Commerce NCSC-NL (Netherlands) · Oct 16, 2026
- WID-SEC-2026-3944 Adobe Magento Open Source: Mehrere Schwachstellen BSI CERT-Bund (WID) · Oct 15, 2026