CVE-2026-18435
Last modified
CVE-2026-18435 is a medium-severity vulnerability rated 6.4/10 on the CVSS scale. The Kadence Blocks — Page Builder Toolkit for Gutenberg Editor plugin for WordPress is vulnerable to Stored Cross-Site Scripting via 'toggleIcon' Block Attribute in all versions up to, and including, 3.7.8 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.. EPSS estimates a 0.19% chance of exploitation in the next 30 days.
Description
The Kadence Blocks — Page Builder Toolkit for Gutenberg Editor plugin for WordPress is vulnerable to Stored Cross-Site Scripting via 'toggleIcon' Block Attribute in all versions up to, and including, 3.7.8 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.
Metrics
CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:C/C:L/I:L/A:N
Weakness Enumeration
Affected Software
Source: CNA advisory (CVE.org). NVD analysis pending.
| Vendor | Product | Versions |
|---|---|---|
| stellarwp | Kadence Blocks — Page Builder Toolkit for Gutenberg Editor | <= 3.7.8 |
References
Timeline
- Published
- Last Modified
- Status
- Received
Frequently Asked Questions
What is CVE-2026-18435?
How severe is CVE-2026-18435?
How do I fix CVE-2026-18435?
How Strix Helps
- How Strix found a critical auth bypass in etcdStrix autonomously discovered a critical authentication bypass in etcd, later designated CVE-2026-33413.
- Autonomous PentestingAI agents that find and validate exploitable vulnerabilities like this one across your applications.
- PR ReviewsPentest every pull request so vulnerable code is caught before it ships to production.
- AI Penetration TestingHow AI-driven penetration testing continuously covers your attack surface.
Related CVEs from 2026
- CVE-2026-1841The PixelYourSite – Your smart PIXEL (TAG) & API Manager plu…7.2
- CVE-2026-18411The KARR Security System and SWDS dealer-installed automotiv…8.1
- CVE-2026-18412OpenCart extensions are uploaded as zip files with .ocmod.zi…9.1
- CVE-2026-1842HyperCloud versions 2.3.5 through 2.6.8 improperly allowed r…6.2
- CVE-2026-18427@fastify/static before version 10.1.3 contains an incomplete…7.5
- CVE-2026-1843The Super Page Cache plugin for WordPress is vulnerable to S…7.2
- CVE-2026-18436The MailPress plugin for WordPress is vulnerable to unauthor…5.3
- CVE-2026-18437The MailerPress – Newsletter, email marketing & AI automatio…5.3
- CVE-2026-1844The PixelYourSite PRO plugin for WordPress is vulnerable to …7.2
- CVE-2026-18446fast-uri before 4.1.2, 3.1.5, and 2.4.4 requires a literal d…7.5
- CVE-2026-1845The Real Estate Pro plugin for WordPress is vulnerable to St…5.5
- CVE-2026-18452DMS+ (Non-Mobile) developed by Rich Source has a Use of Hard…10
Are you affected by CVE-2026-18435?
Run a free Strix scan to check your systems for this vulnerability.
Scan your code nowSource: NVD / NIST