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CVE-2026-109936— Otter Blocks < 3.2.8 - Unauthenticated Stored XSS via Dynamic Content Render Filter

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，在渲染区块时用于重写其动态内容标记的模式未进行正确边界限制。这导致该模式可能消耗掉闭合 HTML 属性的引号，并将相邻的未转义数据作为新属性拉入标记中。此漏洞允许未认证用户实施存储型跨站脚本（XSS）攻击，该攻击将在任何查看受影响页面的访客浏览器中执行，包括已登录的管理员。

AI Predicted 7.4 Difficulty: Easy EPSS 0.17% · P6

Affected Version Matrix 1

VendorProduct Version RangeStatus
Unknown Otter Blocks < 3.2.8 affected
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I. Basic Information for CVE-2026-109936

Vulnerability Information
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Vulnerability Title
Otter Blocks < 3.2.8 - Unauthenticated Stored XSS via Dynamic Content Render Filter
Source: CVE Program / CVE List V5
Vulnerability Description
The Otter Blocks WordPress plugin before 3.2.8 does not correctly bound a pattern it uses to rewrite its dynamic-content tokens while rendering blocks, so the pattern can consume the quote that closes an HTML attribute and pull adjacent unescaped data into the markup as new attributes. This allows unauthenticated users to achieve stored Cross-Site Scripting that executes in the browser of any visitor who views an affected page, including a logged-in administrator.
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-2026-109936

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III. Intelligence Information for CVE-2026-109936

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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-2026-109933 Otter Blocks < 3.2.8 - Contributor+ Stored XSS via Block Style Attributes
CVE-2026-109934 Otter Blocks 3.1.1 - 3.2.7 - Unauthenticated Non-Public Content Disclosure via REST API
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 &rarr; →

IV. Related Vulnerabilities

Same product: Otter Blocks
Same vendor: Unknown

V. Comments for CVE-2026-109936

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