{"schema":"threatline.record/2","record":{"id":"CVE-2026-116816","aliases":[],"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.","categories":["Unclassified"],"product":"llama.cpp","vendor":"ggml-org","ecosystem":null,"affected_ranges":[{"source":"CVE List","source_url":"https://www.cve.org/CVERecord?id=CVE-2026-116816","source_modified_at":"2026-10-27T00:33:58.581Z","fetched_at":"2026-10-27T04:51:10.072820Z","product":"llama.cpp","vendor":"ggml-org","versions":[{"version":"b5899","status":"affected","versionType":"custom","lessThan":"b10261"}],"defaultStatus":"unaffected"}],"fixed_versions":[],"cvss":8.5,"severity":"High","kev":{"listed":false},"epss":{"probability":null,"percentile":null,"score_date":null},"published_at":"2026-10-27T00:33:58.581Z","modified_at":"2026-10-27T00:33:58.581Z","provenance":[{"source":"CVE List","url":"https://www.cve.org/CVERecord?id=CVE-2026-116816","fetched_at":"2026-10-27T04:51:10.072820Z","source_modified_at":"2026-10-27T00:33:58.581Z"}],"sources":["CVE List"],"references":[{"source":"CVE List","url":"https://github.com/ggml-org/llama.cpp/pull/25969","tags":["issue-tracking","patch"]},{"source":"CVE List","url":"https://github.com/ggml-org/llama.cpp/pull/26511","tags":["patch","issue-tracking"]},{"source":"CVE List","url":"https://github.com/ggml-org/llama.cpp/commit/cf06ad7dfe79e7bf2934150d4fefe1ce8db05490","tags":["patch"]},{"source":"CVE List","url":"https://github.com/ggml-org/llama.cpp/blob/b10259/src/llama-vocab.cpp#L1376-L1377","tags":["technical-description"]},{"source":"CVE List","url":"https://github.com/ggml-org/llama.cpp/releases/tag/b10261","tags":["release-notes"]},{"source":"CVE List","url":"https://www.vulncheck.com/advisories/llama-cpp-b5899-before-b10261-heap-out-of-bounds-write-via-plamo2-tokenizer","tags":["third-party-advisory"]}],"locations":[],"motoko_assessment":{"status":"requires_architecture_review","automatic_remediation":false},"cve_state":"PUBLISHED","cvss_source":"CVE List","classification":{"method":"product-first software-layer rules","rules_version":"2.1","matched_on":null,"confidence":"unknown","reviewed":false},"change_timestamp":"2026-10-27T00:33:58.581Z","content_hash":"18fee4eb85b13c4204a6a325a7892d37f9d0d1f69dd0c4f72f82834aa8fb7627"}}