Webmention <= 5.10.1 - Unauthenticated Stored Cross-Site Scripting via Open Graph og:title Meta Tag
Default status is the baseline for the product, each version can override it (e.g. patched versions marked unaffected).
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| pfefferle | Webmention | unaffected |
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| Pfefferle | Webmention |
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| Wordpress-extensions | Webmention |
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No CVSS v4.0
No CVSS v3.0
No CVSS v2
This CVE is not in the KEV list.
Exploit prediction score: < 1% (0.280% probability within 30 days)
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| First Time appeared |
Pfefferle
Pfefferle webmention Wordpress-extensions Wordpress-extensions webmention |
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| Vendors & Products |
Pfefferle
Pfefferle webmention Wordpress-extensions Wordpress-extensions webmention |
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| Metrics |
ssvc
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| Description | 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::add_properties() maps og:title to the Item::name property, but Item has no concrete set_name() method, so Item::__call() stores the value raw while sibling set_content()/set_summary() paths route through webmention_sanitize_html(); Item::get_content() then falls back to the raw name when content and summary are empty, and Receiver::process() explicitly removes the core wp_filter_kses / wp_filter_post_kses hooks on pre_comment_content before calling wp_new_comment(), so the payload is persisted to comment_content as-is. This makes it possible for unauthenticated attackers to inject arbitrary web scripts in pages that will execute whenever a user accesses an injected page, after an administrator approves the resulting pending webmention comment. Successful exploitation additionally requires an action by an administrator — the attacker cannot trigger the vulnerability on their own. | |
| Title | Webmention <= 5.10.1 - Unauthenticated Stored Cross-Site Scripting via Open Graph og:title Meta Tag | |
| Weaknesses | CWE-79 | |
| References |
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| Metrics |
cvssV3_1
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