CVE-2026-2069

LowCVSS 3.3/10Last modified Jun 17, 2026

Description

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.

Metrics

CVSS 3.1 3.3/10CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:N/I:N/A:L

Weakness enumeration

CWE-119CWE-121

Affected software

No affected versions have been published.

Timeline

Published
Feb 6, 2026
Last modified
Jun 17, 2026
NVD status
Deferred

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CVE-2026-2069: Low severity, CVSS 3.3 | Vulnix