TI-2026-10520 Aliases CVE-2026-12230 GHSA-mj3q-62f3-7686

LearnPress <= 4.3.9.1 - Authenticated (Contributor+) Stored Cross-Site Scripting via 'layout_custom_css'

LOW 28CWE-79Published 2026-09-08 · Updated 2026-09-09

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 LearnPress – WordPress LMS Plugin for Create and Sell Online Courses plugin for WordPress is vulnerable to Stored Cross-Site Scripting via the 'layout_custom_css' parameter in all versions up to, and including, 4.3.9.1 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.

Why it matters now

Exploitation None reported CISA SSVC · not in CISA KEV

EPSS 0.00331 26th 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

Vendor	Product	Affected versions	Fixed in	Status	Source
ThimPress	LearnPress – WordPress LMS Plugin for Create and Sell Online Courses	up to 4.3.9.1	—	No fix listed	CNA

LearnPress – WordPress LMS Plugin for Create and Sell Online Courses VendorThimPress Affected up to 4.3.9.1 Fixed in — No fix listed CNA

CPE names Threatist (inferred) · 1

Inferred from how NVD named this product before; not given by a source.

CPE	Versions	Role	Vendor
cpe:2.3:a:thimpress:learnpress::::::::	—	—	ThimPress

cpe:2.3:a:thimpress:learnpress:*:*:*:*:*:*:*:* Versions — — ·ThimPress

Remediation

No fixed version listed by the sources yet.

Timeline

2026-10-02 Threatist record created from CVE-2026-12230
2026-10-03 Alias added: GHSA-mj3q-62f3-7686

References

Other 4

TI-2024-07900 LearnPress – WordPress LMS Plugin <= 4.2.7 - Unauthenticated SQL Injection via 'c_only_fields' CVSS 3.1CRITICAL 10.0
TI-2023-06018 LearnPress <= 4.2.5.7 - Unauthenticated SQL Injection via order_by CVSS 3.1CRITICAL 9.8
TI-2023-05199 WP Hotel Booking < 2.0.8 - Unauthenticated SQLi CVSS 3.1CRITICAL 9.8
TI-2024-04124 LearnPress – WordPress LMS Plugin <= 4.2.6.5 - Unauthenticated Time-Based SQL Injection CVSS 3.1CRITICAL 9.8
TI-2023-18355 WordPress LearnPress plugin <= 4.2.3 - Authenticated Broken Access Control vulnerability CVSS 3.1HIGH 8.8
TI-2022-03105 LearnPress < 4.1.7.2 - Unauthenticated PHP Object Injection via REST API CVSS 3.1HIGH 8.1

See all 155 →

Sources

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