CVE-2026-109933— Otter Blocks < 3.2.8 - Contributor+ Stored XSS via Block Style Attributes
Quick assessment
Affected
Unknown Otter Blocks
Exploitation
No confirmed in-the-wild exploitation; assess based on exposure
Recommended action
Check the vendor advisory and references for a fixed version. If immediate upgrade is impossible, restrict exposure and increase monitoring.
Otter Blocks WordPress 插件在 3.2.8 版本之前，未对用户提供的内容块样式值进行适当的清理和转义，便将其写入内联样式表。这使得拥有“贡献者”级别及以上权限的用户能够注入任意 Web 脚本；当任何访客（包括管理员）查看受影响的文章时，这些脚本将被执行。
Possible ATT&CK Techniques 2 AI
T1059 · Command and Scripting Interpreter T1190 · Exploit Public-Facing Application
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I. Basic Information for CVE-2026-109933
Vulnerability Information
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Vulnerability Title
Otter Blocks < 3.2.8 - Contributor+ Stored XSS via Block Style Attributes
Source: CVE Program / CVE List V5
Vulnerability Description
The Otter Blocks WordPress plugin before 3.2.8 does not properly sanitize and escape user-supplied block styling values before writing them into an inline stylesheet, allowing users with contributor-level access and above to inject arbitrary web scripts that execute when any visitor, including administrators, views the affected post.
Source: CVE Program / CVE List V5
CVSS Information
N/A
Source: CVE Program / CVE List V5
Vulnerability Type
N/A
Source: CVE Program / CVE List V5
Affected Products
| Vendor | Product | Affected Versions | CPE | Subscribe |
|---|---|---|---|---|
| Unknown | Otter Blocks | 0 ~ 3.2.8 | - |
|
II. Public POCs for CVE-2026-109933
| # | POC Description | Source Link | Shenlong Link |
|---|
AI-Generated POC
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Same Patch Batch · Unknown · 2026-10-23 · 22 CVEs total
| CVE-2026-94263 | 4.8 MEDIUM | Advanced Custom Fields: Extended 0.9.2.4 - 0.9.2.7 - Unauthenticated Arbitrary Shortcode E |
| CVE-2026-111965 | 4.3 MEDIUM | Profile Builder 4.0.0 - 4.0.4 - Subscriber+ Comment reCAPTCHA Bypass |
| CVE-2026-110537 | Essential Addons for Elementor < 6.8.7 - Admin+ Cross-Site User Approval State Change via | |
| CVE-2026-110510 | Essential Addons for Elementor < 6.8.7 - Author+ Content Injection via Pricing Table and P | |
| CVE-2026-109935 | Otter Blocks < 3.2.8 - Unauthenticated Restricted Block Content Disclosure via REST API | |
| CVE-2026-109934 | Otter Blocks 3.1.1 - 3.2.7 - Unauthenticated Non-Public Content Disclosure via REST API | |
| CVE-2026-109936 | Otter Blocks < 3.2.8 - Unauthenticated Stored XSS via Dynamic Content Render Filter | |
| CVE-2026-111737 | Speed Optimizer < 7.8.5 - Admin+ Stored XSS via DNS Prefetch and Font Preload URL Lists | |
| CVE-2026-111738 | Speed Optimizer < 7.8.5 - Admin+ Network Option Update via enable-option/disable-option | |
| CVE-2026-111966 | Profile Builder < 4.0.5 - Contributor+ Stored XSS via redirect_url Shortcode Attribute | |
| CVE-2026-111982 | Profile Builder < 4.0.5 - Multisite Subsite Admin+ Network Super Admin Account Takeover vi | |
| CVE-2026-113472 | Depicter 4.0.5 - 4.8.1 - Editor+ Arbitrary File Upload via Media Upload | |
| CVE-2026-113501 | LiteSpeed Cache < 7.9.2 - Subscriber+ Pinned Administrative Notice Dismissal | |
| CVE-2026-113500 | LiteSpeed Cache < 7.9.2 - Unauthenticated Stored XSS via Font Display Optimization | |
| CVE-2026-113499 | LiteSpeed Cache < 7.9.2 - Unauthenticated Stored XSS via CDN Inline CSS Rewriting | |
| CVE-2026-112230 | Popup Builder < 4.4.6 - Unauthenticated Popup Trashing via post_type Parameter | |
| CVE-2026-112219 | Download Monitor < 5.3.5 - Multisite Subsite Admin+ Incorrect Authorization via Approved D | |
| CVE-2026-94267 | Advanced Custom Fields: Extended < 0.9.2.8 - Unauthenticated RCE via Front-End Post Update | |
| CVE-2026-94264 | Advanced Custom Fields: Extended 0.8.9.4 - 0.9.2.7 - Contributor+ XSS via Form Shortcode A | |
| CVE-2026-94262 | Advanced Custom Fields: Extended 0.9.2.7 - Unauthenticated Non-Administrator Account Takeo |
Showing top 20 of 22 CVEs. View all on vendor page → →
IV. Related Vulnerabilities
Same product: Otter Blocks
-
CVE-2026-109936
Otter Blocks < 3.2.8 - Unauthenticated Stored XSS via Dynami -
CVE-2026-109934
Otter Blocks 3.1.1 - 3.2.7 - Unauthenticated Non-Public Cont -
CVE-2026-109935
Otter Blocks < 3.2.8 - Unauthenticated Restricted Block Cont -
CVE-2026-109937
Otter Blocks < 3.2.3 - Unauthenticated Open Redirect via Str
Same vendor: Unknown
-
CVE-2026-94263
Advanced Custom Fields: Extended 0.9.2.4 - 0.9.2.7 - Unauthe -
CVE-2026-111965
Profile Builder 4.0.0 - 4.0.4 - Subscriber+ Comment reCAPTCH -
CVE-2026-94268
Advanced Custom Fields: Extended 0.9.2.7 - Unauthenticated A -
CVE-2026-94262
Advanced Custom Fields: Extended 0.9.2.7 - Unauthenticated N -
CVE-2026-94264
Advanced Custom Fields: Extended 0.8.9.4 - 0.9.2.7 - Contrib
V. Comments for CVE-2026-109933
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