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0 snac2 versions before 2.93 contain a heap-based buffer overflow vulnerability in the _xs_json_load_lexer() function. This flaw allows unauthenticated remote attackers to corrupt heap memory by sending specially crafted JSON strings with a \u0000 escape sequence. Exploitation involves sending a crafted application/activity+json POST request to activitypub_post_handler(), which processes the input before signature verification, leading to heap overflow and server crashes. Join the discussion | CVE Database V5 | 10/18/2026, 12:30:28 UTC Added: 10/18/2026, 11:49:16 UTC |
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