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TI-2026-35533 Aliases CVE-2026-48093

Code Embed - Contributor Stored Cross-Site Scripting via Remote URL Embed

Priority MEDIUM 62CWE-79Published · Updated

Key facts

Attack vector
Network
Privileges required
Low
User interaction
Required
Attack complexity
Low
Impact type
Cross-site scripting
Confidentiality · integrity · availability
Low · Low · Low
Fix status
Fixed

Attack profile from CVSS 3.1 · CNA. Fix status from CNA. Impact type from CWE-79.

Summary

The Code Embed WordPress plugin prior to version 2.6.1 is vulnerable to stored Cross-Site Scripting (XSS) through the external URL embed feature in post content. The vulnerable code scans rendered content for URL embed tokens, fetches the remote URL, and inserts the remote response body into the page without output sanitization or an `unfiltered_html` capability check. This allows a Contributor attacker to submit a pending post containing an inert-looking URL token that executes attacker-controlled JavaScript when an Administrator or Editor previews or reviews the post. This is distinct from CVE-2026-2512, which affected custom field meta values up to version 2.5.1. This vector affects version 2.6 and uses the documented external URL embed feature in post content. This particular issue is patched in version 2.6.1.

Why it matters now

Exploitation Proof of concept CISA SSVC · not in CISA KEV
EPSS 0.00287 21st percentileScored 2026-11-07
Fix Fixed code-embed (dartiss): 2.6.1

SSVC decision points

CISA ADP · SSVC 2.0.3

Exploitation
Poc
Automatable
No
Technical impact
Partial

The decision (Track, Attend, Act) also depends on your mission and well-being impact; see CISA's SSVC guide.

Affected products

VendorProductAffected versionsFixed inStatusSource
dartisscode-embedbefore 2.6.12.6.1Patch availableCNA
  • code-embed Vendordartiss Affected before 2.6.1 Fixed in 2.6.1 Patch available CNA

Remediation

  • Fix · CNA code-embed (dartiss) Fixed in 2.6.1

Timeline

  1. 2026-10-02 Threatist record created from CVE-2026-48093

References

Other 3

  • TI-2026-36621 Draft List - Contributor Stored Cross-Site Scripting via Draft Title in Custom Drafts Template Attributes CVSS 3.1MEDIUM 6.5
  • TI-2026-35534 ShareOpenly has Cross-Site Scripting (XSS) via Missing esc_url() on Shared URL in Content Output CVSS 4.0MEDIUM 5.3
  • TI-2026-08001 Draft List <= 2.6.3 - Authenticated (Author+) Stored Cross-Site Scripting via Draft Post Title CVSS 3.1MEDIUM 6.4
  • TI-2026-05973 Social Post Embed <= 2.0.1 - Authenticated (Contributor+) Stored Cross-Site Scripting via Threads Embed CVSS 3.1MEDIUM 6.4
  • TI-2026-03469 Draft List <= 2.6.2 - Authenticated (Contributor+) Stored Cross-Site Scripting via 'display_name' Parameter CVSS 3.1MEDIUM 6.4
  • TI-2026-02138 Code Embed <= 2.5.1 - Authenticated (Contributor+) Stored Cross-Site Scripting via Custom Fields CVSS 3.1MEDIUM 6.4
See all 9 →

Sources

This product uses the NVD API but is not endorsed or certified by the NVD. Sources and licences