CVE-2026-112021

snac2 before 2.93 contains a heap-based buffer overflow vulnerability in xsjsonloadlexer that allows unauthenticated remote attackers to corrupt heap memory by sending JSON strings containing a \u0000 escape. Attackers can send a single crafted application/activity+json POST to...

CVE-2026-112021

The snac2 software prior to version 2.93 is vulnerable to a heap-based buffer overflow in the _xs_json_load_lexer() function. An unauthenticated remote attacker can trigger this by sending a crafted application/activity+json POST request to activitypub_post_handler(). The vulnerability occurs bec...

CVE-2026-112021 snac2 before 2.93 Heap-Based Buffer Overflow via JSON Parser _xs_json_load_lexer()

snac2 before 2.93 contains a heap-based buffer overflow vulnerability in xsjsonloadlexer that allows unauthenticated remote attackers to corrupt heap memory by sending JSON strings containing a \u0000 escape. Attackers can send a single crafted application/activity+json POST to...

EUVD-2026-103474

snac2 before 2.93 contains a heap-based buffer overflow vulnerability in xsjsonloadlexer that allows unauthenticated remote attackers to corrupt heap memory by sending JSON strings containing a \u0000 escape. Attackers can send a single crafted application/activity+json POST to...