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CVE-2025-68616 is a server-side request forgery protection bypass in WeasyPrint prior to version 68.0. The issue affects WeasyPrint's default_url_fetcher behavior when applications use a custom url_fetcher to enforce SSRF restrictions. Although the developer's custom fetcher may validate the initial URL and attempt to block access to internal destinations, the underlying urllib library automatically follows HTTP redirects and does not re-validate the redirected destination against the application's security policy. As a result, an attacker can supply a URL that appears benign at first but redirects to a prohibited target such as localhost, RFC1918/internal services, or cloud metadata endpoints. Version 68.0 fixes this issue.
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Cross-references every affected SKU, including bundled OEM variants.
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