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TI-2026-84142 Aliases CVE-2026-120552GHSA-x6h5-q644-mq4f

Stored cross-site scripting in SEO Engine plugin via post title

Priority LOW 28CWE-79Published · Updated

Key facts

Attack vector
Network
Privileges required
Low
User interaction
None
Attack complexity
Low
Impact type
Cross-site scripting
Confidentiality · integrity · availability
Low · Low · None
Fix status
No fix listed

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

Summary

The SEO Engine plugin (Smart SEO with AI, Schema & Redirection for WordPress) is affected in all versions up to and including 0.9.9. Insufficient input sanitization and output escaping of the title parameter allow stored cross-site scripting (CWE-79). WordPress core filtering leaves entity-encoded payloads in the database. An authenticated attacker with Contributor access or higher can store scripts that run when a user opens an affected page.

Written with Claude Haiku 5.5 from the sources below · 2026-11-03

Description from the CNA

The SEO Engine – Smart SEO with AI, Schema & Redirection for WordPress plugin for WordPress is vulnerable to Stored Cross-Site Scripting via the 'title' parameter in all versions up to, and including, 0.9.9 due to insufficient input sanitization and output escaping. This makes it possible for authenticated attackers, with contributor-level access and above, to inject arbitrary web scripts in pages that will execute whenever a user accesses an injected page. WordPress core's wp_filter_kses (applied via title_save_pre for Contributors and Authors) strips literal tag markup on save but leaves HTML-entity-encoded payloads intact in the database, meaning entity-encoded XSS payloads stored via the standard WordPress REST API (POST /wp-json/wp/v2/posts) are not neutralized before reaching the vulnerable sink.

Why it matters now

Exploitation None reported CISA SSVC · not in CISA KEV
EPSS 0.00198 9th percentileScored 2026-11-07
Fix No fix listed No fixed version in the sources yet

SSVC decision points

CISA ADP · SSVC 2.0.3

Exploitation
None
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
tigroumeowSEO Engine – Smart SEO with AI, Schema & Redirection for WordPressup to 0.9.9—No fix listedCNA
  • SEO Engine – Smart SEO with AI, Schema & Redirection for WordPress Vendortigroumeow Affected up to 0.9.9 Fixed in — No fix listed CNA

Remediation

The sources list no fixed version for SEO Engine (Smart SEO with AI, Schema & Redirection for WordPress).

Written with Claude Haiku 5.5 from the sources below · 2026-11-03

Timeline

  1. 2026-11-03 Threatist record created from CVE-2026-120552
  2. 2026-11-03 Alias added: GHSA-x6h5-q644-mq4f
  3. 2026-11-03 CISA SSVC decision points changed
  4. 2026-11-03 Priority changed: MEDIUM → LOW

References

Other 7

  • TI-2025-10772 AI Engine <= 3.1.3 - Unauthenticated Sensitive Information Exposure to Privilege Escalation CVSS 3.1CRITICAL 9.8
  • TI-2023-28063 WordPress AI Engine plugin <= 1.9.98 - Unauthenticated Arbitrary File Upload vulnerability CVSS 3.1CRITICAL 10.0
  • TI-2024-09725 AI-Engine < 2.6.5 - Admin+ SQLi CVSS 3.1HIGH 7.2
  • TI-2024-05988 AI Engine < 2.5.1 - Admin+ RCE CVSS 3.1HIGH 7.2
  • TI-2024-19264 WordPress AI Engine plugin <= 2.1.4 - Server Side Request Forgery (SSRF) vulnerability CVSS 3.1MEDIUM 6.8
  • TI-2024-06230 AI Engine < 2.4.8 - Admin+ SQLi CVSS 3.1MEDIUM 4.7
See all 57 →

Sources

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