{"id":"CVE-2026-116816","aliases":[],"url":"https://o3.security/vulnerability/CVE-2026-116816","summary":"llama.cpp b5899 before b10261 Heap Out-of-Bounds Write via plamo2 Tokenizer","details":"llama.cpp b5899 before b10261 contains a heap out-of-bounds write vulnerability in llm_tokenizer_plamo2::build that allows attackers to corrupt heap memory via crafted GGUF models. Attackers can supply BYTE-typed token text like <0x-1> whose negative parsed value writes token ids before the bytes_ buffer during model loading, causing crashes or potential code execution.","published":"2026-10-27T00:33:58.581Z","modified":"2026-10-28T02:59:29.941034970Z","cvss":null,"epss":null,"cisaKev":null,"exploitsKnown":null,"affectedPackages":[],"fix":{"url":"https://github.com/ggml-org/llama.cpp/commit/cf06ad7dfe79e7bf2934150d4fefe1ce8db05490","label":"ggml-org/llama.cpp@cf06ad7"},"references":[{"type":"ADVISORY","url":"https://github.com/CVEProject/cvelistV5/tree/main/cves/2026/116xxx/CVE-2026-116816.json"},{"type":"ADVISORY","url":"https://github.com/ggml-org/llama.cpp/releases/tag/b10261"},{"type":"ADVISORY","url":"https://nvd.nist.gov/vuln/detail/CVE-2026-116816"},{"type":"ADVISORY","url":"https://www.vulncheck.com/advisories/llama-cpp-b5899-before-b10261-heap-out-of-bounds-write-via-plamo2-tokenizer"},{"type":"FIX","url":"https://github.com/ggml-org/llama.cpp/commit/cf06ad7dfe79e7bf2934150d4fefe1ce8db05490"},{"type":"FIX","url":"https://github.com/ggml-org/llama.cpp/pull/25969"},{"type":"FIX","url":"https://github.com/ggml-org/llama.cpp/pull/26511"},{"type":"ARTICLE","url":"https://github.com/ggml-org/llama.cpp/blob/b10259/src/llama-vocab.cpp#L1376-L1377"}],"provenance":{"sources":["OSV.dev","FIRST.org (EPSS)"],"lastVerified":"2026-10-28T02:59:29.941034970Z"}}