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

Quick assessment

Affected
ggml-org llama.cpp
Exploitation
No confirmed in-the-wild exploitation; assess based on exposure
Recommended action
Check the vendor advisory and references for a fixed version. If immediate upgrade is impossible, restrict exposure and increase monitoring.

在 ggml-org llama.cpp 的 d006858/e15efe0 版本中发现了一个漏洞。该漏洞影响文件 common/json-schema-to-grammar.cpp 中的 _visit_pattern 函数。此漏洞可导致空指针解引用，攻击者可以远程发起攻击。修复该问题的拉取请求（Pull Request）目前正等待合并接受。

CVSS 5.3 · Medium EPSS 0.72% · P53

Possible ATT&CK Techniques 1 AI

T1190 · Exploit Public-Facing Application

Affected Version Matrix 2

VendorProduct Version RangeStatus
ggml-org llama.cpp d006858 affected
e15efe0 affected
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I. Basic Information for CVE-2026-17500

Vulnerability Information
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Vulnerability Title
ggml-org llama.cpp json-schema-to-grammar.cpp _visit_pattern null pointer dereference
Source: CVE Program / CVE List V5
Vulnerability 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.
Source: CVE Program / CVE List V5
CVSS Information
CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:L
Source: CVE Program / CVE List V5
Vulnerability Type
空指针解引用
Source: CVE Program / CVE List V5

Affected Products

Vendor Product Affected Versions CPE Subscribe
ggml-org llama.cpp d006858 cpe:2.3:a:ggml-org:llama.cpp:*:*:*:*:*:*:*:*

II. Public POCs for CVE-2026-17500

# POC Description Source Link Shenlong Link
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III. Intelligence Information for CVE-2026-17500

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Patches & Fixes for CVE-2026-17500 (1)

News Coverage for CVE-2026-17500 (1)

Same Patch Batch · ggml-org · 2026-07-27 · 4 CVEs total

CVE-2026-17501 5.3 MEDIUM ggml-org llama.cpp JSON-Schema-to-GBNF Conversion json-schema-to-grammar.cpp transform rec
CVE-2026-17512 3.3 LOW ggml-org whisper.cpp log_mel_spectrogram out-of-bounds
CVE-2026-17513 3.3 LOW ggml-org whisper.cpp ggml.c ggml_ftype_to_ggml_type assertion

IV. Related Vulnerabilities

Same product: llama.cpp
Same vendor: ggml-org
Same weakness: CWE-476

V. Comments for CVE-2026-17500

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