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              "content": {
                "id": "CVE-2026-112021",
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                    "Automatable": "yes"
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          "orgId": "134c704f-9b21-4f2e-91b3-4a467353bcc0",
          "shortName": "CISA-ADP"
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        "title": "CISA ADP Vulnrichment"
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    ],
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          "repo": "https://codeberg.org/grunfink/snac2",
          "vendor": "grunfink",
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      "datePublic": "2026-07-08T00:00:00.000Z",
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          "value": "snac2 before 2.93 contains a heap-based buffer overflow vulnerability in _xs_json_load_lexer() 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 activitypub_post_handler(), which parses it before signature checks, overflowing heap allocations and crashing the server."
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            "subConfidentialityImpact": "NONE",
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            "userInteraction": "NONE",
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        "shortName": "VulnCheck"
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          "tags": [
            "technical-description"
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          "url": "https://nullenvk.pl/posts/02-snac2-json"
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          "url": "https://codeberg.org/grunfink/snac2/src/tag/2.92/xs_json.h#L283-L285"
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          "tags": [
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          "url": "https://codeberg.org/grunfink/snac2/commit/ec2c5c2046e0381bc942ec5d0d05ec861fe377e7"
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      "title": "snac2 before 2.93 Heap-Based Buffer Overflow via JSON Parser _xs_json_load_lexer()",
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    "dateReserved": "2026-10-18T01:24:56.329Z",
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