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CVE-2026-17501— ggml-org llama.cpp JSON-Schema-to-GBNF Conversion json-schema-to-grammar.cpp transform recursion

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.

ggml llama.cpp是ggml组织开源的一个纯C/C++语言模型推理工具。 ggml llama.cpp e15efe0版本存在资源管理错误漏洞，该漏洞源于JSON-Schema-to-GBNF Conversion组件中transform函数的资源分配问题，可能导致远程攻击者造成拒绝服务。

CVSS 5.3 · Medium EPSS 0.72% · P53

Possible ATT&CK Techniques 1 AI

T1190 · Exploit Public-Facing Application

Affected Version Matrix 1

VendorProduct Version RangeStatus
ggml-org llama.cpp e15efe0 affected
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I. Basic Information for CVE-2026-17501

Vulnerability Information
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Vulnerability Title
ggml-org llama.cpp JSON-Schema-to-GBNF Conversion json-schema-to-grammar.cpp transform recursion
Source: CVE Program / CVE List V5
Vulnerability Description
A flaw has been found in ggml-org llama.cpp e15efe0. This vulnerability affects the function transform of the file common/json-schema-to-grammar.cpp of the component JSON-Schema-to-GBNF Conversion. This manipulation causes uncontrolled recursion. The attack may be initiated 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
未经控制的递归
Source: CVE Program / CVE List V5
Vulnerability Title
ggml llama.cpp 资源管理错误漏洞
Source: CNNVD (China National Vulnerability Database)
Vulnerability Description
ggml llama.cpp是ggml组织开源的一个纯C/C++语言模型推理工具。 ggml llama.cpp e15efe0版本存在资源管理错误漏洞，该漏洞源于JSON-Schema-to-GBNF Conversion组件中transform函数的资源分配问题，可能导致远程攻击者造成拒绝服务。
Source: CNNVD (China National Vulnerability Database)
CVSS Information
N/A
Source: CNNVD (China National Vulnerability Database)
Vulnerability Type
N/A
Source: CNNVD (China National Vulnerability Database)

Affected Products

Vendor Product Affected Versions CPE Subscribe
ggml-org llama.cpp e15efe0 cpe:2.3:a:ggml-org:llama.cpp:*:*:*:*:*:*:*:*

II. Public POCs for CVE-2026-17501

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III. Intelligence Information for CVE-2026-17501

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Patches & Fixes for CVE-2026-17501 (1)

Proof of Concept for CVE-2026-17501 (1)

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

CVE-2026-17500 5.3 MEDIUM ggml-org llama.cpp json-schema-to-grammar.cpp _visit_pattern null pointer dereference
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-674

V. Comments for CVE-2026-17501

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