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Stored XSS in Blaze Demo Importer via SVG upload

Priority LOW 32CWE-79Published · Updated

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

Exploitation None reported CISA SSVC · not in CISA KEV
EPSS 0.00282 20th percentileScored 2026-11-07
Public exploit Yes 1 exploit referenceTagged by the CNA
Fix Fixed Blaze Demo Importer (Unknown): 1.0.17

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

VendorProductAffected versionsFixed inStatusSource
UnknownBlaze Demo Importerbefore 1.0.171.0.17Patch availableCNA
  • 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

  1. 2026-10-19 Threatist record created from CVE-2026-106933
  2. 2026-10-19 Alias added: GHSA-753r-w3pv-4492
  3. 2026-10-19 CVSS score added · CISA ADP
  4. 2026-10-19 Weakness changed · CISA ADP
  5. 2026-10-19 CISA SSVC decision points changed

References

Sources