# CVE-2026-103849: Adobe Commerce | Improper Neutralization of Special Elements Used in a Template Engine (CWE-1336)

- Exploited (CISA KEV): no
- Published: 2026-10-13
- CVSS: 10 CRITICAL (v3.1)
- EPSS: 1.2% (67th percentile)
- CWE: CWE-1336

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.

## Edge WAF coverage (claimed by vendors, not measured)

| Vendor | Status | First rule | Days after publication |
|---|---|---|---|
| Cloudflare | No public claim | — | — |
| AWS | No public claim | — | — |
| Microsoft Azure | No public claim | — | — |
| Google Cloud | No public claim | — | — |
| Fastly | Rule published | 2026-10-19 | 6 |
| F5 | No public claim | — | — |
| Akamai | No public source | — | — |
| OWASP CRS | No public claim | — | — |

### Fastly

- 2026-10-19 · new
  > Added protection for CVE-2026-103849: Adobe Commerce and Magento Improper Neutralization of Special Elements Used in a Template Engine (BlockStrap). The virtual patch for CVE-2026-75650: Adobe Commerce and Magento Unauthenticated SSTI (StyleSmuggler), released on September 9, 2026 , has been updated to address the vulnerabilities caused by improper neutralization of special elements used in a template engine, which was assigned CVE-2026-103849 (BlockStrap). If you have already activated the vir…
  Source: https://www.fastly.com/documentation/reference/changes/2026/10/added-virtual-patch-for-cve-2026-103849/

"No public claim" means no vendor statement names this CVE; "Before feed history" means the CVE is older than the vendor feed. In both cases generic rules may still block it.

HTML: https://cve.vigilbase.com/cve/CVE-2026-103849 · JSON: https://cve.vigilbase.com/api/v1/cves/CVE-2026-103849