Vulnerability-Lookup

ubuntu-cve-2026-17500

Vulnerability from osv_ubuntu

Published

2026-07-28 00:00

Modified

2026-07-28 00:00

Summary

Details

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.

Severity

5.3 (Medium)


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

6.9 (Medium)


                    
                      CVSS:4.0/AV:N/AC:L/AT:N/PR:N/UI:N/VC:N/VI:N/VA:L/SC:N/SI:N/SA:N

N/A (UNKNOWN)


                    
                      medium

References

URL

Type

	https://ubuntu.com/security/CVE-2026-17500	REPORT
	https://www.cve.org/CVERecord?id=CVE-2026-17500	REPORT
	https://github.com/ggml-org/llama.cpp/issues/25284	REPORT
	https://github.com/ggml-org/llama.cpp/pull/25308	REPORT
	https://github.com/ggml-org/llama.cpp/	REPORT
	https://vuldb.com/cve/CVE-2026-17500	REPORT
	https://vuldb.com/submit/798503	REPORT
	https://vuldb.com/vuln/383353	REPORT
	https://vuldb.com/vuln/383353/cti	REPORT

JSON

To clipboard

{
  "affected": [
    {
      "ecosystem_specific": {
        "binaries": [
          {
            "binary_name": "libllama0",
            "binary_version": "8681+dfsg-1"
          },
          {
            "binary_name": "llama.cpp",
            "binary_version": "8681+dfsg-1"
          },
          {
            "binary_name": "llama.cpp-examples",
            "binary_version": "8681+dfsg-1"
          },
          {
            "binary_name": "llama.cpp-tests",
            "binary_version": "8681+dfsg-1"
          },
          {
            "binary_name": "llama.cpp-tools",
            "binary_version": "8681+dfsg-1"
          },
          {
            "binary_name": "llama.cpp-tools-extra",
            "binary_version": "8681+dfsg-1"
          },
          {
            "binary_name": "python3-gguf",
            "binary_version": "8681+dfsg-1"
          }
        ]
      },
      "package": {
        "ecosystem": "Ubuntu:26.04:LTS",
        "name": "llama.cpp",
        "purl": "pkg:deb/ubuntu/llama.cpp@8681+dfsg-1?arch=source\u0026distro=resolute"
      },
      "ranges": [
        {
          "events": [
            {
              "introduced": "0"
            }
          ],
          "type": "ECOSYSTEM"
        }
      ],
      "versions": [
        "5882+dfsg-2",
        "8064+dfsg-1ubuntu1",
        "8681+dfsg-1"
      ]
    }
  ],
  "aliases": [],
  "details": "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.",
  "id": "UBUNTU-CVE-2026-17500",
  "modified": "2026-07-28T00:00:00Z",
  "published": "2026-07-28T00:00:00Z",
  "references": [
    {
      "type": "REPORT",
      "url": "https://ubuntu.com/security/CVE-2026-17500"
    },
    {
      "type": "REPORT",
      "url": "https://www.cve.org/CVERecord?id=CVE-2026-17500"
    },
    {
      "type": "REPORT",
      "url": "https://github.com/ggml-org/llama.cpp/issues/25284"
    },
    {
      "type": "REPORT",
      "url": "https://github.com/ggml-org/llama.cpp/pull/25308"
    },
    {
      "type": "REPORT",
      "url": "https://github.com/ggml-org/llama.cpp/"
    },
    {
      "type": "REPORT",
      "url": "https://vuldb.com/cve/CVE-2026-17500"
    },
    {
      "type": "REPORT",
      "url": "https://vuldb.com/submit/798503"
    },
    {
      "type": "REPORT",
      "url": "https://vuldb.com/vuln/383353"
    },
    {
      "type": "REPORT",
      "url": "https://vuldb.com/vuln/383353/cti"
    }
  ],
  "related": [],
  "schema_version": "1.7.0",
  "severity": [
    {
      "score": "CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:L",
      "type": "CVSS_V3"
    },
    {
      "score": "CVSS:4.0/AV:N/AC:L/AT:N/PR:N/UI:N/VC:N/VI:N/VA:L/SC:N/SI:N/SA:N",
      "type": "CVSS_V4"
    },
    {
      "score": "medium",
      "type": "Ubuntu"
    }
  ],
  "upstream": [
    "CVE-2026-17500"
  ]
}

CVE-2026-17500 (GCVE-0-2026-17500)

Vulnerability from cvelistv5 – Published: 2026-07-27 00:15 – Updated: 2026-07-27 18:03

Title

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

Summary

Severity

6.9 (Medium)


                        
                          CVSS:4.0/AV:N/AC:L/AT:N/PR:N/UI:N/VC:N/VI:N/VA:L/SC:N/SI:N/SA:N/E:X

5.3 (Medium)


                        
                          CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:L/E:X/RL:X/RC:R

5.3 (Medium)


                        
                          CVSS:3.0/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:L/E:X/RL:X/RC:R

SSVC

Exploitation: none Automatable: yes Technical Impact: partial

CISA Coordinator (v2.0.3)

CWE

CWE-476 - NULL Pointer Dereference
CWE-404 - Denial of Service

Assigner

VulDB

References

7 references

URL	Tags
https://vuldb.com/vuln/383353	vdb-entrytechnical-description
https://vuldb.com/vuln/383353/cti	signaturepermissions-required
https://vuldb.com/cve/CVE-2026-17500	third-party-advisory
https://vuldb.com/submit/798503	third-party-advisory
https://github.com/ggml-org/llama.cpp/issues/25284	issue-tracking
https://github.com/ggml-org/llama.cpp/pull/25308	issue-trackingpatch
https://github.com/ggml-org/llama.cpp/	product

Impacted products

1 product

Vendor	Product	Version
ggml-org	llama.cpp	Affected: d006858 Affected: e15efe0 cpe:2.3:a:ggml-org:llama.cpp::::::::

Credits

m00dy (VulDB User) VulDB CNA Team

Show details on NVD website

JSON

To clipboard

{
  "containers": {
    "adp": [
      {
        "metrics": [
          {
            "other": {
              "content": {
                "id": "CVE-2026-17500",
                "options": [
                  {
                    "Exploitation": "none"
                  },
                  {
                    "Automatable": "yes"
                  },
                  {
                    "Technical Impact": "partial"
                  }
                ],
                "role": "CISA Coordinator",
                "timestamp": "2026-07-27T18:03:09.823962Z",
                "version": "2.0.3"
              },
              "type": "ssvc"
            }
          }
        ],
        "providerMetadata": {
          "dateUpdated": "2026-07-27T18:03:26.332Z",
          "orgId": "134c704f-9b21-4f2e-91b3-4a467353bcc0",
          "shortName": "CISA-ADP"
        },
        "title": "CISA ADP Vulnrichment"
      }
    ],
    "cna": {
      "affected": [
        {
          "cpes": [
            "cpe:2.3:a:ggml-org:llama.cpp:*:*:*:*:*:*:*:*"
          ],
          "product": "llama.cpp",
          "vendor": "ggml-org",
          "versions": [
            {
              "status": "affected",
              "version": "d006858"
            },
            {
              "status": "affected",
              "version": "e15efe0"
            }
          ]
        }
      ],
      "credits": [
        {
          "lang": "en",
          "type": "reporter",
          "value": "m00dy (VulDB User)"
        },
        {
          "lang": "en",
          "type": "coordinator",
          "value": "VulDB CNA Team"
        }
      ],
      "descriptions": [
        {
          "lang": "en",
          "value": "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."
        }
      ],
      "metrics": [
        {
          "cvssV4_0": {
            "baseScore": 6.9,
            "baseSeverity": "MEDIUM",
            "vectorString": "CVSS:4.0/AV:N/AC:L/AT:N/PR:N/UI:N/VC:N/VI:N/VA:L/SC:N/SI:N/SA:N/E:X",
            "version": "4.0"
          }
        },
        {
          "cvssV3_1": {
            "baseScore": 5.3,
            "baseSeverity": "MEDIUM",
            "vectorString": "CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:L/E:X/RL:X/RC:R",
            "version": "3.1"
          }
        },
        {
          "cvssV3_0": {
            "baseScore": 5.3,
            "baseSeverity": "MEDIUM",
            "vectorString": "CVSS:3.0/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:L/E:X/RL:X/RC:R",
            "version": "3.0"
          }
        },
        {
          "cvssV2_0": {
            "baseScore": 5,
            "vectorString": "AV:N/AC:L/Au:N/C:N/I:N/A:P/E:ND/RL:ND/RC:UR",
            "version": "2.0"
          }
        }
      ],
      "problemTypes": [
        {
          "descriptions": [
            {
              "cweId": "CWE-476",
              "description": "NULL Pointer Dereference",
              "lang": "en",
              "type": "CWE"
            }
          ]
        },
        {
          "descriptions": [
            {
              "cweId": "CWE-404",
              "description": "Denial of Service",
              "lang": "en",
              "type": "CWE"
            }
          ]
        }
      ],
      "providerMetadata": {
        "dateUpdated": "2026-07-27T00:15:12.222Z",
        "orgId": "1af790b2-7ee1-4545-860a-a788eba489b5",
        "shortName": "VulDB"
      },
      "references": [
        {
          "name": "VDB-383353 | ggml-org llama.cpp json-schema-to-grammar.cpp _visit_pattern null pointer dereference",
          "tags": [
            "vdb-entry",
            "technical-description"
          ],
          "url": "https://vuldb.com/vuln/383353"
        },
        {
          "name": "VDB-383353 | CTI Indicators (IOB, IOC, IOA)",
          "tags": [
            "signature",
            "permissions-required"
          ],
          "url": "https://vuldb.com/vuln/383353/cti"
        },
        {
          "name": "CVE-2026-17500 | CVE Analysis and Report",
          "tags": [
            "third-party-advisory"
          ],
          "url": "https://vuldb.com/cve/CVE-2026-17500"
        },
        {
          "name": "Submit #798503 | ggml-org llama.cpp confirmed on commit d006858 / 2025-04-03 and commit e15efe0 / tag b8635+1) Reachable Assertion",
          "tags": [
            "third-party-advisory"
          ],
          "url": "https://vuldb.com/submit/798503"
        },
        {
          "tags": [
            "issue-tracking"
          ],
          "url": "https://github.com/ggml-org/llama.cpp/issues/25284"
        },
        {
          "tags": [
            "issue-tracking",
            "patch"
          ],
          "url": "https://github.com/ggml-org/llama.cpp/pull/25308"
        },
        {
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          "url": "https://github.com/ggml-org/llama.cpp/"
        }
      ],
      "timeline": [
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          "time": "2026-07-26T00:00:00.000Z",
          "value": "Advisory disclosed"
        },
        {
          "lang": "en",
          "time": "2026-07-26T02:00:00.000Z",
          "value": "VulDB entry created"
        },
        {
          "lang": "en",
          "time": "2026-07-26T19:38:55.000Z",
          "value": "VulDB entry last update"
        }
      ],
      "title": "ggml-org llama.cpp json-schema-to-grammar.cpp _visit_pattern null pointer dereference",
      "x_generator": [
        "VulDB PVTS v202607"
      ]
    }
  },
  "cveMetadata": {
    "assignerOrgId": "1af790b2-7ee1-4545-860a-a788eba489b5",
    "assignerShortName": "VulDB",
    "cveId": "CVE-2026-17500",
    "datePublished": "2026-07-27T00:15:12.222Z",
    "dateReserved": "2026-07-26T17:33:41.700Z",
    "dateUpdated": "2026-07-27T18:03:26.332Z",
    "state": "PUBLISHED"
  },
  "dataType": "CVE_RECORD",
  "dataVersion": "5.2"
}

Sightings

Author	Source	Type	Date	Other

Nomenclature

Seen: The vulnerability was mentioned, discussed, or observed by the user.
Confirmed: The vulnerability has been validated from an analyst's perspective.
Published Proof of Concept: A public proof of concept is available for this vulnerability.
Exploited: The vulnerability was observed as exploited by the user who reported the sighting.
Patched: The vulnerability was observed as successfully patched by the user who reported the sighting.
Not exploited: The vulnerability was not observed as exploited by the user who reported the sighting.
Not confirmed: The user expressed doubt about the validity of the vulnerability.
Not patched: The vulnerability was not observed as successfully patched by the user who reported the sighting.

Detection rules are retrieved from Rulezet.

The MITRE ATT&CK techniques below are AI-generated suggestions, inferred from the description of the vulnerability by the CIRCL/vulnerability-attack-technique-classification-roberta-base model, served locally by ML-Gateway. They have not been verified by an analyst and are provided for guidance only.

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ubuntu-cve-2026-17500

Vulnerability from osv_ubuntu

CVE-2026-17500 (GCVE-0-2026-17500)

Tags

Sightings

Nomenclature