Vulnerability-Lookup

GHSA-C839-JG98-XWX3

Vulnerability from github – Published: 2026-06-26 18:33 – Updated: 2026-06-26 21:32

Details

Unauthenticated remote information disclosure vulnerability in Ollama's model quantization engine allows an attacker to read and exfiltrate the server's heap memory, potentially leading to sensitive data exposure, further compromise, and stealthy persistence.

Severity

7.5 (High)


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

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{
  "affected": [],
  "aliases": [
    "CVE-2026-5757"
  ],
  "database_specific": {
    "cwe_ids": [
      "CWE-125"
    ],
    "github_reviewed": false,
    "github_reviewed_at": null,
    "nvd_published_at": "2026-06-26T16:16:36Z",
    "severity": "HIGH"
  },
  "details": "Unauthenticated remote information disclosure vulnerability in Ollama\u0027s model quantization engine allows an attacker to read and exfiltrate the server\u0027s heap memory, potentially leading to sensitive data exposure, further compromise, and stealthy persistence.",
  "id": "GHSA-c839-jg98-xwx3",
  "modified": "2026-06-26T21:32:15Z",
  "published": "2026-06-26T18:33:59Z",
  "references": [
    {
      "type": "ADVISORY",
      "url": "https://nvd.nist.gov/vuln/detail/CVE-2026-5757"
    },
    {
      "type": "WEB",
      "url": "https://kb.cert.org/vuls/id/518910"
    },
    {
      "type": "WEB",
      "url": "https://ollama.com"
    },
    {
      "type": "WEB",
      "url": "https://www.kb.cert.org/vuls/id/518910"
    }
  ],
  "schema_version": "1.4.0",
  "severity": [
    {
      "score": "CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:N/A:N",
      "type": "CVSS_V3"
    }
  ]
}

CVE-2026-5757 (GCVE-0-2026-5757)

Vulnerability from cvelistv5 – Published: 2026-06-26 15:15 – Updated: 2026-06-26 18:38

Title

There exists an unauthenticated remote information disclosure vulnerability in Ollama's model quantization engine

Summary

Severity

7.5 (High)


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

SSVC

Exploitation: none Automatable: yes Technical Impact: partial

CISA Coordinator (v2.0.3)

CWE

Assigner

certcc

References

3 references

URL	Tags
https://kb.cert.org/vuls/id/518910
https://ollama.com
https://www.kb.cert.org/vuls/id/518910

Impacted products

1 product

Vendor	Product	Version
Ollama AI	Ollama	Affected: v0.13.5

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{
  "containers": {
    "adp": [
      {
        "providerMetadata": {
          "dateUpdated": "2026-06-26T15:52:23.093Z",
          "orgId": "af854a3a-2127-422b-91ae-364da2661108",
          "shortName": "CVE"
        },
        "references": [
          {
            "url": "https://www.kb.cert.org/vuls/id/518910"
          }
        ],
        "title": "CVE Program Container"
      },
      {
        "metrics": [
          {
            "cvssV3_1": {
              "attackComplexity": "LOW",
              "attackVector": "NETWORK",
              "availabilityImpact": "NONE",
              "baseScore": 7.5,
              "baseSeverity": "HIGH",
              "confidentialityImpact": "HIGH",
              "integrityImpact": "NONE",
              "privilegesRequired": "NONE",
              "scope": "UNCHANGED",
              "userInteraction": "NONE",
              "vectorString": "CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:N/A:N",
              "version": "3.1"
            }
          },
          {
            "other": {
              "content": {
                "id": "CVE-2026-5757",
                "options": [
                  {
                    "Exploitation": "none"
                  },
                  {
                    "Automatable": "yes"
                  },
                  {
                    "Technical Impact": "partial"
                  }
                ],
                "role": "CISA Coordinator",
                "timestamp": "2026-06-26T18:37:59.802606Z",
                "version": "2.0.3"
              },
              "type": "ssvc"
            }
          }
        ],
        "providerMetadata": {
          "dateUpdated": "2026-06-26T18:38:23.503Z",
          "orgId": "134c704f-9b21-4f2e-91b3-4a467353bcc0",
          "shortName": "CISA-ADP"
        },
        "title": "CISA ADP Vulnrichment"
      }
    ],
    "cna": {
      "affected": [
        {
          "product": "Ollama",
          "vendor": "Ollama AI",
          "versions": [
            {
              "status": "affected",
              "version": "v0.13.5"
            }
          ]
        }
      ],
      "descriptions": [
        {
          "lang": "en",
          "value": "Unauthenticated remote information disclosure vulnerability in Ollama\u0027s model quantization engine allows an attacker to read and exfiltrate the server\u0027s heap memory, potentially leading to sensitive data exposure, further compromise, and stealthy persistence."
        }
      ],
      "problemTypes": [
        {
          "descriptions": [
            {
              "description": "CWE-125 Out-of-bounds Read",
              "lang": "en"
            }
          ]
        },
        {
          "descriptions": [
            {
              "description": "CWE-416 Use After Free",
              "lang": "en"
            }
          ]
        },
        {
          "descriptions": [
            {
              "description": "CWE-306 Missing Authentication for Critical Function",
              "lang": "en"
            }
          ]
        }
      ],
      "providerMetadata": {
        "dateUpdated": "2026-06-26T15:15:28.464Z",
        "orgId": "37e5125f-f79b-445b-8fad-9564f167944b",
        "shortName": "certcc"
      },
      "references": [
        {
          "url": "https://kb.cert.org/vuls/id/518910"
        },
        {
          "url": "https://ollama.com"
        }
      ],
      "source": {
        "discovery": "UNKNOWN"
      },
      "title": "There exists an unauthenticated remote information disclosure vulnerability in Ollama\u0027s model quantization engine",
      "x_generator": {
        "engine": "VINCE 3.0.43",
        "env": "prod",
        "origin": "https://cveawg.mitre.org/api/cve/CVE-2026-5757"
      }
    }
  },
  "cveMetadata": {
    "assignerOrgId": "37e5125f-f79b-445b-8fad-9564f167944b",
    "assignerShortName": "certcc",
    "cveId": "CVE-2026-5757",
    "datePublished": "2026-06-26T15:15:28.464Z",
    "dateReserved": "2026-04-07T16:59:20.290Z",
    "dateUpdated": "2026-06-26T18:38:23.503Z",
    "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.

Action not permitted

GHSA-C839-JG98-XWX3

CVE-2026-5757 (GCVE-0-2026-5757)

Tags

Sightings

Nomenclature