CVE-2026-17500: ggml-org llama.cpp json-schema-to-grammar.cpp _visit_pattern null pointer dereference

Severity: medium (CVSS 5.3 v3.1)
Exploited in the wild: not listed in CISA KEV
EPSS: 0.7% probability of exploitation in the next 30 days
Public exploit or detection template: none known
Published: 2026-07-27 · updated 2026-10-24
Weakness: CWE-404

Description

A vulnerability was detected in ggml-org llama.cpp d006858/e15efe0. This affects the function _visit_pattern of the file common/json-schema-to-grammar.cpp. The manipulation results in null pointer dereference. The attack can be launched remotely. The pull request to fix this issue awaits acceptance.

Affected products

ggml-org llama.cpp: d006858, e15efe0

References

https://github.com/ggml-org/llama.cpp/
https://github.com/ggml-org/llama.cpp/issues/25284
https://github.com/ggml-org/llama.cpp/pull/25308
https://vuldb.com/cve/CVE-2026-17500
https://vuldb.com/submit/798503
https://vuldb.com/vuln/383353
https://vuldb.com/vuln/383353/cti

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