{
  "affected": [
    {}
  ],
  "details": "A flaw has been found in ggml-org llama.cpp up to 55abc39. Impacted is the function llama_grammar_advance_stack of the file llama.cpp/src/llama-grammar.cpp of the component GBNF Grammar Handler. This manipulation causes stack-based buffer overflow. The attack needs to be launched locally. The exploit has been published and may be used. Patch name: 18993. To fix this issue, it is recommended to deploy a patch.",
  "id": "CVE-2026-2069",
  "modified": "2026-03-15T13:47:44.828419048Z",
  "published": "2026-02-06T22:16:12.883Z",
  "references": [
    {
      "type": "WEB",
      "url": "https://github.com/user-attachments/files/24761101/poc.zip"
    },
    {
      "type": "WEB",
      "url": "https://vuldb.com/?ctiid.344636"
    },
    {
      "type": "WEB",
      "url": "https://vuldb.com/?id.344636"
    },
    {
      "type": "WEB",
      "url": "https://vuldb.com/?submit.745263"
    },
    {
      "type": "WEB",
      "url": "https://github.com/ggml-org/llama.cpp/"
    },
    {
      "type": "REPORT",
      "url": "https://github.com/ggml-org/llama.cpp/issues/18988"
    },
    {
      "type": "REPORT",
      "url": "https://github.com/ggml-org/llama.cpp/issues/18988#event-4426704865"
    },
    {
      "type": "FIX",
      "url": "https://github.com/ggml-org/llama.cpp/pull/18993"
    }
  ],
  "severity": [
    {
      "score": "CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:N/I:N/A:L",
      "type": "CVSS_V3"
    }
  ]
}