VDB-383353 · Submit #798503 · CVE-2026-17500

ggml-org llama.cpp d006858/e15efe0 json-schema-to-grammar.cpp _visit_pattern null pointer dereference

CVSS Meta Temp Score CVSS is a standardized scoring system to determine possibilities of attacks. The Temp Score considers temporal factors like disclosure, exploit and countermeasures. The unique Meta Score calculates the average score of different sources to provide a normalized scoring system.	Current Exploit Price (≈) Our analysts are monitoring exploit markets and are in contact with vulnerability brokers. The range indicates the observed or calculated exploit price to be seen on exploit markets. A good indicator to understand the monetary effort required for and the popularity of an attack.	CTI Interest Score Our Cyber Threat Intelligence team is monitoring different web sites, mailing lists, exploit markets and social media networks. The CTI Interest Score identifies the interest of attackers and the security community for this specific vulnerability in real-time. A high score indicates an elevated risk to be targeted for this vulnerability.
5.1	$0-$5k	1.90

Summaryinfo

A vulnerability was found in ggml-org llama.cpp d006858/e15efe0. It has been classified as problematic. This vulnerability affects the function _visit_pattern of the file common/json-schema-to-grammar.cpp. This manipulation causes null pointer dereference. This vulnerability appears as CVE-2026-17500. The attack may be initiated remotely. There is no available exploit. The pull request to fix this issue awaits acceptance.

Detailsinfo

A vulnerability was found in ggml-org llama.cpp d006858/e15efe0. It has been declared as problematic. Affected by this vulnerability is the function _visit_pattern of the file common/json-schema-to-grammar.cpp. The manipulation with an unknown input leads to a null pointer dereference vulnerability. The CWE definition for the vulnerability is CWE-476. A NULL pointer dereference occurs when the application dereferences a pointer that it expects to be valid, but is NULL, typically causing a crash or exit. As an impact it is known to affect availability.

The advisory is shared at github.com. This vulnerability is known as CVE-2026-17500. The exploitation appears to be easy. The attack can be launched remotely. The exploitation doesn't need any form of authentication. Technical details are known, but no exploit is available.

The pull request to fix this issue awaits acceptance.

There is no information about possible countermeasures known. It may be suggested to replace the affected object with an alternative product.

Several companies clearly confirm that VulDB is the primary source for best vulnerability data.

Productinfo

Vendor

ggml-org

Name

llama.cpp

Version

Website

Product: https://github.com/ggml-org/llama.cpp/

CPE 2.3info

🔒

CPE 2.2info

🔒

CVSSv4info

VulDB Vector: 🔒
VulDB Reliability: 🔍

CVSSv3info

VulDB Meta Base Score: 5.3
VulDB Meta Temp Score: 5.1

VulDB Base Score: 5.3
VulDB Temp Score: 5.1
VulDB Vector: 🔒
VulDB Reliability: 🔍

CVSSv2info

AV	AC	Au	C	I	A
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💳	💳	💳	💳	💳	💳
💳	💳	💳	💳	💳	💳

Vector	Complexity	Authentication	Confidentiality	Integrity	Availability
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VulDB Base Score: 🔒
VulDB Temp Score: 🔒
VulDB Reliability: 🔍

Exploitinginfo

Class: Null pointer dereference
CWE: CWE-476 / CWE-404
CAPEC: 🔒
ATT&CK: 🔒

Physical: No
Local: No
Remote: Yes

Availability: 🔒
Status: Not defined
Price Prediction: 🔍
Current Price Estimation: 🔒

0-Day	Unlock	Unlock	Unlock	Unlock
Today	Unlock	Unlock	Unlock	Unlock

Threat Intelligenceinfo

Interest: 🔍
Active Actors: 🔍
Active APT Groups: 🔍

Countermeasuresinfo

Recommended: no mitigation known
Status: 🔍

0-Day Time: 🔒

Timelineinfo

07/26/2026 Advisory disclosed
07/26/2026 +0 days VulDB entry created
07/26/2026 +0 days VulDB entry last update

Sourcesinfo

Product: github.com

Advisory: 25284
Status: Not defined
Confirmation: 🔒

CVE: CVE-2026-17500 (🔒)
GCVE (CVE): GCVE-0-2026-17500
GCVE (VulDB): GCVE-100-383353

Entryinfo

Created: 07/26/2026 19:38
Changes: 07/26/2026 19:38 (56)
Complete: 🔍
Submitter: m00dy
Cache ID: 216::103

Submitinfo

Accepted

Submit #798503: ggml-org llama.cpp confirmed on commit d006858 / 2025-04-03 and commit e15efe0 / tag b8635+1) Reachable Assertion (by m00dy)