CVE-2026-2069
Low · 3.3CVSS
3.3
EPSS
0.1%
Published
Feb 6, 2026
CISA due date
—
The record
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.
Affected packages
| Ecosystem | Package | Introduced | Fixed |
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