Stored XSS in Blaze Demo Importer via SVG upload
Key facts
- Attack vector
- Network
- Privileges required
- High
- User interaction
- Required
- Attack complexity
- Low
- Impact type
- Cross-site scripting
- Confidentiality · integrity · availability
- High · High · High
- Fix status
- Fixed
Attack profile from CVSS 3.1 · CISA ADP. Fix status from CNA. Impact type from CWE-79.
Summary
The Blaze Demo Importer WordPress plugin before 1.0.17 does not sanitize uploaded SVG files and registers the SVG MIME type for the WordPress media library unconditionally. An authenticated user with the Author role or higher can upload a crafted SVG that runs arbitrary JavaScript in the browser of any user who opens the file, a cross-site scripting flaw (CWE-79).
Written with Claude Haiku 5.5 from the sources below · 2026-10-28
Description from the CNA
The Blaze Demo Importer WordPress plugin before 1.0.17 does not sanitize uploaded SVG files and registers the SVG MIME type for the WordPress media library unconditionally, allowing authenticated users with the Author role or higher to upload a crafted SVG that executes arbitrary JavaScript in the browser of any user who opens the file.
Why it matters now
SSVC decision points
CISA ADP · SSVC 2.0.3
- Exploitation
- None
- Automatable
- No
- Technical impact
- Total
The decision (Track, Attend, Act) also depends on your mission and well-being impact; see CISA's SSVC guide.
Affected products
| Vendor | Product | Affected versions | Fixed in | Status | Source |
|---|---|---|---|---|---|
| Unknown | Blaze Demo Importer | before 1.0.17 | 1.0.17 | Patch available | CNA |
- Blaze Demo Importer VendorUnknown Affected before 1.0.17 Fixed in 1.0.17 Patch available CNA
Remediation
Update Blaze Demo Importer to version 1.0.17 or later.
Written with Claude Haiku 5.5 from the sources below · 2026-10-28
- Fix · CNA Blaze Demo Importer (Unknown) Fixed in 1.0.17
Timeline
- 2026-10-19 Threatist record created from CVE-2026-106933
- 2026-10-19 Alias added: GHSA-753r-w3pv-4492
- 2026-10-19 CVSS score added · CISA ADP
- 2026-10-19 Weakness changed · CISA ADP
- 2026-10-19 CISA SSVC decision points changed
References
Sources
- CVE-2026-106933 · CVE Program
- CVE-2026-106933 · NVD
- FIRST EPSS
- GHSA-753r-w3pv-4492 · GitHub Advisory Database · CC BY 4.0
This product uses the NVD API but is not endorsed or certified by the NVD. Sources and licences