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        "cveId": "CVE-2026-2069",
        "assignerOrgId": "1af790b2-7ee1-4545-860a-a788eba489b5",
        "state": "PUBLISHED",
        "assignerShortName": "VulDB",
        "dateReserved": "2026-02-06T07:41:07.150Z",
        "datePublished": "2026-02-06T22:02:08.933Z",
        "dateUpdated": "2026-02-23T09:28:33.822Z"
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                "dateUpdated": "2026-02-23T09:28:33.822Z"
            },
            "title": "ggml-org llama.cpp GBNF Grammar llama-grammar.cpp llama_grammar_advance_stack stack-based overflow",
            "problemTypes": [
                {
                    "descriptions": [
                        {
                            "type": "CWE",
                            "cweId": "CWE-121",
                            "lang": "en",
                            "description": "Stack-based Buffer Overflow"
                        }
                    ]
                },
                {
                    "descriptions": [
                        {
                            "type": "CWE",
                            "cweId": "CWE-119",
                            "lang": "en",
                            "description": "Memory Corruption"
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            ],
            "affected": [
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                    "vendor": "ggml-org",
                    "product": "llama.cpp",
                    "versions": [
                        {
                            "version": "55abc39",
                            "status": "affected"
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                    ],
                    "modules": [
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            ],
            "descriptions": [
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                    "lang": "en",
                    "value": "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."
                }
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                    "time": "2026-02-06T00:00:00.000Z",
                    "lang": "en",
                    "value": "Advisory disclosed"
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                    "time": "2026-02-06T01:00:00.000Z",
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                    "value": "VulDB entry created"
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                    "type": "reporter"
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                {
                    "url": "https://vuldb.com/?id.344636",
                    "name": "VDB-344636 | ggml-org llama.cpp GBNF Grammar llama-grammar.cpp llama_grammar_advance_stack stack-based overflow",
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                },
                {
                    "url": "https://vuldb.com/?submit.745263",
                    "name": "Submit #745263 | llama.cpp commit 55abc39 Stack-based Buffer Overflow",
                    "tags": [
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                },
                {
                    "url": "https://github.com/ggml-org/llama.cpp/issues/18988",
                    "tags": [
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                    "url": "https://github.com/ggml-org/llama.cpp/issues/18988#event-4426704865",
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                {
                    "url": "https://github.com/user-attachments/files/24761101/poc.zip",
                    "tags": [
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                    ]
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                {
                    "url": "https://github.com/ggml-org/llama.cpp/pull/18993",
                    "tags": [
                        "issue-tracking",
                        "patch"
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                {
                    "url": "https://github.com/ggml-org/llama.cpp/",
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                            "content": {
                                "timestamp": "2026-02-10T15:18:13.164026Z",
                                "id": "CVE-2026-2069",
                                "options": [
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                                        "Exploitation": "poc"
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                                        "Automatable": "no"
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