CVE-2026-111109

The Webmention plugin for WordPress is vulnerable to Stored Cross-Site Scripting via the Open Graph og:title meta tag of a webmention source URL in versions up to, and including, 5.10.1. This is due to insufficient input sanitization: Meta::addproperties maps og:title to the Item::name property,...

CVE-2026-111109

The Webmention plugin for WordPress (versions up to and including 5.10.1 ) is vulnerable to Stored Cross-Site Scripting (XSS) . The root cause is insufficient input sanitization where the og:title meta tag from a webmention source URL is mapped to the Item::name property. Because Item lacks a con...

EUVD-2026-114592

The Webmention plugin for WordPress is vulnerable to Stored Cross-Site Scripting via the Open Graph og:title meta tag of a webmention source URL in versions up to, and including, 5.10.1. This is due to insufficient input sanitization: Meta::addproperties maps og:title to the Item::name property,...

CVE-2026-111109 Webmention <= 5.10.1 - Unauthenticated Stored Cross-Site Scripting via Open Graph og:title Meta Tag

The Webmention plugin for WordPress is vulnerable to Stored Cross-Site Scripting via the Open Graph og:title meta tag of a webmention source URL in versions up to, and including, 5.10.1. This is due to insufficient input sanitization: Meta::addproperties maps og:title to the Item::name property,...

CVE-2026-111109 Webmention <= 5.10.1 - Unauthenticated Stored Cross-Site Scripting via Open Graph og:title Meta Tag

The Webmention plugin for WordPress is vulnerable to Stored Cross-Site Scripting via the Open Graph og:title meta tag of a webmention source URL in versions up to, and including, 5.10.1. This is due to insufficient input sanitization: Meta::addproperties maps og:title to the Item::name property,...

CVE-2026-111109 Webmention <= 5.10.1 - Unauthenticated Stored Cross-Site Scripting via Open Graph og:title Meta Tag

The Webmention plugin for WordPress is vulnerable to Stored Cross-Site Scripting via the Open Graph og:title meta tag of a webmention source URL in versions up to, and including, 5.10.1. This is due to insufficient input sanitization: Meta::addproperties maps og:title to the Item::name property,...

CVE-2026-111109: pfefferle Webmention: The Webmention plugin for WordPress is vulnerable to Stored Cross-Site Scripting via the Open Graph og:title meta tag…

The Webmention plugin for WordPress is vulnerable to Stored Cross-Site Scripting via the Open Graph og:title meta tag of a webmention source URL in versions up to, and including, 5.10.1. This is due to insufficient input sanitization: Meta::addproperties maps og:title to the Item::name property,...

WordPress Webmention plugin <= 5.10.1 - Unauthenticated Stored Cross-Site Scripting vulnerability

Unauthenticated Stored Cross-Site Scripting vulnerability discovered by poiri3r in WordPress Plugin Webmention versions = 5.10.1...

PT-2026-134445

Name of the Vulnerable Software and Affected Versions Webmention plugin for WordPress versions prior to 5.10.2 Description Stored Cross-Site Scripting occurs via the Open Graph og:title meta tag of a webmention source URL. The issue stems from insufficient input sanitization where Meta::add...

WordPress Webmention plugin <= 5.8.0 - Unauthenticated Stored Cross-Site Scripting vulnerability

Unauthenticated Stored Cross-Site Scripting vulnerability discovered by Volodymyr Kolesnykov in WordPress Plugin Webmention versions = 5.8.0...

CVE-2026-10513

The Webmention plugin for WordPress is vulnerable to Stored Cross-Site Scripting in versions up to and including 5.8.0 via parser-derived 'avatar' and 'url' author metadata. This is due to insufficient input sanitization and output escaping on user-supplied MF2 author properties processed by the...

CVE-2026-10513

CVE-2026-10513 affects the WordPress Webmention plugin (versions up to and including 5.8.0). The root cause is insufficient input sanitization and output escaping for MF2 author properties (avatar/url) processed by the unauthenticated webmention REST endpoint and rendered into HTML value attribut...

CVE-2026-10513 Webmention <= 5.8.0 - Unauthenticated Stored Cross-Site Scripting via MF2 'photo'/'url' Author Properties

The Webmention plugin for WordPress is vulnerable to Stored Cross-Site Scripting in versions up to and including 5.8.0 via parser-derived 'avatar' and 'url' author metadata. This is due to insufficient input sanitization and output escaping on user-supplied MF2 author properties processed by the...

CVE-2026-10513 Webmention <= 5.8.0 - Unauthenticated Stored Cross-Site Scripting via MF2 'photo'/'url' Author Properties

The Webmention plugin for WordPress is vulnerable to Stored Cross-Site Scripting in versions up to and including 5.8.0 via parser-derived 'avatar' and 'url' author metadata. This is due to insufficient input sanitization and output escaping on user-supplied MF2 author properties processed by the...

EUVD-2026-40376

The Webmention plugin for WordPress is vulnerable to Stored Cross-Site Scripting in versions up to and including 5.8.0 via parser-derived 'avatar' and 'url' author metadata. This is due to insufficient input sanitization and output escaping on user-supplied MF2 author properties processed by the...

CVE-2026-10513

The Webmention plugin for WordPress is vulnerable to Stored Cross-Site Scripting in versions up to and including 5.8.0 via parser-derived 'avatar' and 'url' author metadata. This is due to insufficient input sanitization and output escaping on user-supplied MF2 author properties processed by the...

PT-2026-53940

Name of the Vulnerable Software and Affected Versions Webmention versions prior to 5.8.1 Description Stored Cross-Site Scripting occurs due to insufficient input sanitization and output escaping of user-supplied Microformat 2 MF2 author properties. An unauthenticated attacker can inject arbitrary...

CVE-2026-10513: Improper Neutralization of Input During Web Page Generation

The Webmention plugin for WordPress is vulnerable to Stored Cross-Site Scripting in versions up to and including 5.8.0 via parser-derived 'avatar' and 'url' author metadata. This is due to insufficient input sanitization and output escaping on user-supplied MF2 author properties processed by the...

CVE-2026-42180

Lemmy is a link aggregator and forum for the fediverse. Prior to version 0.19.18, Lemmy allows an authenticated low-privileged user to create a link post through POST /api/v3/post. When a post is created in a public community, the backend asynchronously sends a Webmention to the attacker-controll...

CVE-2026-42180

Lemmy is a link aggregator and forum for the fediverse. Prior to version 0.19.18, Lemmy allows an authenticated low-privileged user to create a link post through POST /api/v3/post. When a post is created in a public community, the backend asynchronously sends a Webmention to the attacker-controll...