Vulnerability-Lookup

UBUNTU-CVE-2026-50812 (CVE-2026-50812)

Vulnerability from osv_ubuntu – Published: 2026-07-08 18:16 – Updated: 2026-09-17 00:11 – Source website

Details

A NULL pointer dereference in the SQLite Session Extension in SQLite 3.53.1 and SQLite trunk builds before check-in e807d4e3798efd53 allows an attacker who can supply a malformed changeset blob to cause a denial of service. The issue occurs when sqlite3changeset_apply_v3() applies a corrupt changeset and reaches sqlite3_value_type() with a NULL sqlite3_value pointer.

Severity

5.5 (Medium)


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

N/A (UNKNOWN)


                    
                      medium

References

URL

Type

	https://ubuntu.com/security/CVE-2026-50812	REPORT
	https://www.cve.org/CVERecord?id=CVE-2026-50812	REPORT
	https://gist.github.com/junius-sec/bb556f333957c5…	REPORT
	https://ubuntu.com/security/notices/USN-8565-1	ADVISORY

JSON

To clipboard

{
  "affected": [
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      "ecosystem_specific": {
        "binaries": [
          {
            "binary_name": "libsqlite-tcl",
            "binary_version": "2.8.17-10ubuntu2"
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          },
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            "binary_version": "2.8.17-10ubuntu2"
          }
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      },
      "package": {
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        "name": "sqlite",
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      },
      "ranges": [
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      "versions": [
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      },
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      "versions": [
        "3.46.1-8",
        "3.46.1-9",
        "3.46.1-9ubuntu0.1"
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    }
  ],
  "aliases": [],
  "details": "A NULL pointer dereference in the SQLite Session Extension in SQLite 3.53.1 and SQLite trunk builds before check-in e807d4e3798efd53 allows an attacker who can supply a malformed changeset blob to cause a denial of service. The issue occurs when sqlite3changeset_apply_v3() applies a corrupt changeset and reaches sqlite3_value_type() with a NULL sqlite3_value pointer.",
  "id": "UBUNTU-CVE-2026-50812",
  "modified": "2026-09-17T00:11:01Z",
  "published": "2026-07-08T18:16:00Z",
  "references": [
    {
      "type": "REPORT",
      "url": "https://ubuntu.com/security/CVE-2026-50812"
    },
    {
      "type": "REPORT",
      "url": "https://www.cve.org/CVERecord?id=CVE-2026-50812"
    },
    {
      "type": "REPORT",
      "url": "https://gist.github.com/junius-sec/bb556f333957c5226dede314db0e9e91"
    },
    {
      "type": "ADVISORY",
      "url": "https://ubuntu.com/security/notices/USN-8565-1"
    }
  ],
  "related": [
    "USN-8565-1"
  ],
  "schema_version": "1.7.0",
  "severity": [
    {
      "score": "CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:N/I:N/A:H",
      "type": "CVSS_V3"
    },
    {
      "score": "medium",
      "type": "Ubuntu"
    }
  ],
  "upstream": [
    "CVE-2026-50812"
  ]
}

CVE-2026-50812 (GCVE-0-2026-50812)

Vulnerability from cvelistv5 – Published: 2026-07-08 00:00 – Updated: 2026-07-08 20:11

Summary

Severity

5.5 (Medium)


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

SSVC

Exploitation: none Automatable: no Technical Impact: partial

CISA Coordinator · CISA-ADP (v2.0.3)

Decision recorded 2026-07-08 20:11 UTC

CWE

n/a
CWE-476 - NULL Pointer Dereference

Assigner

mitre mitre root

References

3 references

URL	Tags
https://sqlite.org/src/info/e807d4e3798efd53
https://github.com/sqlite/sqlite/commit/b869ed6b0…
https://gist.github.com/junius-sec/bb556f333957c5…

Show details on NVD website

JSON

To clipboard

{
  "containers": {
    "adp": [
      {
        "metrics": [
          {
            "cvssV3_1": {
              "attackComplexity": "LOW",
              "attackVector": "LOCAL",
              "availabilityImpact": "HIGH",
              "baseScore": 5.5,
              "baseSeverity": "MEDIUM",
              "confidentialityImpact": "NONE",
              "integrityImpact": "NONE",
              "privilegesRequired": "LOW",
              "scope": "UNCHANGED",
              "userInteraction": "NONE",
              "vectorString": "CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:N/I:N/A:H",
              "version": "3.1"
            }
          },
          {
            "other": {
              "content": {
                "id": "CVE-2026-50812",
                "options": [
                  {
                    "Exploitation": "none"
                  },
                  {
                    "Automatable": "no"
                  },
                  {
                    "Technical Impact": "partial"
                  }
                ],
                "role": "CISA Coordinator",
                "timestamp": "2026-07-08T20:11:38.428519Z",
                "version": "2.0.3"
              },
              "type": "ssvc"
            }
          }
        ],
        "problemTypes": [
          {
            "descriptions": [
              {
                "cweId": "CWE-476",
                "description": "CWE-476 NULL Pointer Dereference",
                "lang": "en",
                "type": "CWE"
              }
            ]
          }
        ],
        "providerMetadata": {
          "dateUpdated": "2026-07-08T20:11:45.210Z",
          "orgId": "134c704f-9b21-4f2e-91b3-4a467353bcc0",
          "shortName": "CISA-ADP"
        },
        "title": "CISA ADP Vulnrichment"
      }
    ],
    "cna": {
      "affected": [
        {
          "product": "n/a",
          "vendor": "n/a",
          "versions": [
            {
              "status": "affected",
              "version": "n/a"
            }
          ]
        }
      ],
      "descriptions": [
        {
          "lang": "en",
          "value": "A NULL pointer dereference in the SQLite Session Extension in SQLite 3.53.1 and SQLite trunk builds before check-in e807d4e3798efd53 allows an attacker who can supply a malformed changeset blob to cause a denial of service. The issue occurs when sqlite3changeset_apply_v3() applies a corrupt changeset and reaches sqlite3_value_type() with a NULL sqlite3_value pointer."
        }
      ],
      "problemTypes": [
        {
          "descriptions": [
            {
              "description": "n/a",
              "lang": "en",
              "type": "text"
            }
          ]
        }
      ],
      "providerMetadata": {
        "dateUpdated": "2026-07-08T17:19:31.916Z",
        "orgId": "8254265b-2729-46b6-b9e3-3dfca2d5bfca",
        "shortName": "mitre"
      },
      "references": [
        {
          "url": "https://sqlite.org/src/info/e807d4e3798efd53"
        },
        {
          "url": "https://github.com/sqlite/sqlite/commit/b869ed6b067d623cb1383549f2a18aa35508385d"
        },
        {
          "url": "https://gist.github.com/junius-sec/bb556f333957c5226dede314db0e9e91"
        }
      ]
    }
  },
  "cveMetadata": {
    "assignerOrgId": "8254265b-2729-46b6-b9e3-3dfca2d5bfca",
    "assignerShortName": "mitre",
    "cveId": "CVE-2026-50812",
    "datePublished": "2026-07-08T00:00:00.000Z",
    "dateReserved": "2026-06-07T00:00:00.000Z",
    "dateUpdated": "2026-07-08T20:11:45.210Z",
    "state": "PUBLISHED"
  },
  "dataType": "CVE_RECORD",
  "dataVersion": "5.2"
}

USN-8565-1 (UBUNTU-CVE-2026-50812)

Vulnerability from osv_ubuntu – Published: 2026-07-20 13:00 – Updated: 2026-07-20 13:00 – Source website

Summary

sqlite3 vulnerabilities

Details

It was discovered that SQLite did not properly handle NULL pointer dereferences in the Session Extension when applying a corrupt changeset. An attacker could possibly use this issue to cause SQLite to crash, resulting in a denial of service. (CVE-2026-50812)

It was discovered that SQLite had a buffer overread in the Session Extension when processing a corrupt changeset. An attacker could possibly use this issue to obtain sensitive information. (CVE-2026-50813)

References

URL

Type

	https://ubuntu.com/security/notices/USN-8565-1	ADVISORY
	https://ubuntu.com/security/CVE-2026-50812	REPORT
	https://ubuntu.com/security/CVE-2026-50813	REPORT

JSON

To clipboard

{
  "affected": [
    {
      "database_specific": {
        "cves_map": {
          "cves": [
            {
              "id": "CVE-2026-50812",
              "severity": [
                {
                  "score": "CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:N/I:N/A:H",
                  "type": "CVSS_V3"
                },
                {
                  "score": "medium",
                  "type": "Ubuntu"
                }
              ]
            },
            {
              "id": "CVE-2026-50813",
              "severity": [
                {
                  "score": "CVSS:3.1/AV:L/AC:L/PR:N/UI:R/S:U/C:L/I:N/A:H",
                  "type": "CVSS_V3"
                },
                {
                  "score": "CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:H/I:N/A:N",
                  "type": "CVSS_V3"
                },
                {
                  "score": "medium",
                  "type": "Ubuntu"
                }
              ]
            }
          ],
          "ecosystem": "Ubuntu:22.04:LTS"
        }
      },
      "ecosystem_specific": {
        "availability": "No subscription required",
        "binaries": [
          {
            "binary_name": "lemon",
            "binary_version": "3.37.2-2ubuntu0.7"
          },
          {
            "binary_name": "libsqlite3-0",
            "binary_version": "3.37.2-2ubuntu0.7"
          },
          {
            "binary_name": "libsqlite3-tcl",
            "binary_version": "3.37.2-2ubuntu0.7"
          },
          {
            "binary_name": "sqlite3",
            "binary_version": "3.37.2-2ubuntu0.7"
          },
          {
            "binary_name": "sqlite3-tools",
            "binary_version": "3.37.2-2ubuntu0.7"
          }
        ]
      },
      "package": {
        "ecosystem": "Ubuntu:22.04:LTS",
        "name": "sqlite3",
        "purl": "pkg:deb/ubuntu/sqlite3@3.37.2-2ubuntu0.7?arch=source\u0026distro=jammy"
      },
      "ranges": [
        {
          "events": [
            {
              "introduced": "0"
            },
            {
              "fixed": "3.37.2-2ubuntu0.7"
            }
          ],
          "type": "ECOSYSTEM"
        }
      ],
      "versions": [
        "3.35.5-1",
        "3.36.0-2",
        "3.37.2-2",
        "3.37.2-2ubuntu0.1",
        "3.37.2-2ubuntu0.3",
        "3.37.2-2ubuntu0.4",
        "3.37.2-2ubuntu0.5",
        "3.37.2-2ubuntu0.6"
      ]
    },
    {
      "database_specific": {
        "cves_map": {
          "cves": [
            {
              "id": "CVE-2026-50812",
              "severity": [
                {
                  "score": "CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:N/I:N/A:H",
                  "type": "CVSS_V3"
                },
                {
                  "score": "medium",
                  "type": "Ubuntu"
                }
              ]
            },
            {
              "id": "CVE-2026-50813",
              "severity": [
                {
                  "score": "CVSS:3.1/AV:L/AC:L/PR:N/UI:R/S:U/C:L/I:N/A:H",
                  "type": "CVSS_V3"
                },
                {
                  "score": "CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:H/I:N/A:N",
                  "type": "CVSS_V3"
                },
                {
                  "score": "medium",
                  "type": "Ubuntu"
                }
              ]
            }
          ],
          "ecosystem": "Ubuntu:24.04:LTS"
        }
      },
      "ecosystem_specific": {
        "availability": "No subscription required",
        "binaries": [
          {
            "binary_name": "lemon",
            "binary_version": "3.45.1-1ubuntu2.7"
          },
          {
            "binary_name": "libsqlite3-0",
            "binary_version": "3.45.1-1ubuntu2.7"
          },
          {
            "binary_name": "libsqlite3-tcl",
            "binary_version": "3.45.1-1ubuntu2.7"
          },
          {
            "binary_name": "sqlite3",
            "binary_version": "3.45.1-1ubuntu2.7"
          },
          {
            "binary_name": "sqlite3-tools",
            "binary_version": "3.45.1-1ubuntu2.7"
          }
        ]
      },
      "package": {
        "ecosystem": "Ubuntu:24.04:LTS",
        "name": "sqlite3",
        "purl": "pkg:deb/ubuntu/sqlite3@3.45.1-1ubuntu2.7?arch=source\u0026distro=noble"
      },
      "ranges": [
        {
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            {
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            },
            {
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            }
          ],
          "type": "ECOSYSTEM"
        }
      ],
      "versions": [
        "3.42.0-1",
        "3.44.0-1",
        "3.44.2-1",
        "3.45.0-1",
        "3.45.1-1",
        "3.45.1-1ubuntu1",
        "3.45.1-1ubuntu2",
        "3.45.1-1ubuntu2.1",
        "3.45.1-1ubuntu2.3",
        "3.45.1-1ubuntu2.4",
        "3.45.1-1ubuntu2.5",
        "3.45.1-1ubuntu2.6"
      ]
    },
    {
      "database_specific": {
        "cves_map": {
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            {
              "id": "CVE-2026-50812",
              "severity": [
                {
                  "score": "CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:N/I:N/A:H",
                  "type": "CVSS_V3"
                },
                {
                  "score": "medium",
                  "type": "Ubuntu"
                }
              ]
            },
            {
              "id": "CVE-2026-50813",
              "severity": [
                {
                  "score": "CVSS:3.1/AV:L/AC:L/PR:N/UI:R/S:U/C:L/I:N/A:H",
                  "type": "CVSS_V3"
                },
                {
                  "score": "CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:H/I:N/A:N",
                  "type": "CVSS_V3"
                },
                {
                  "score": "medium",
                  "type": "Ubuntu"
                }
              ]
            }
          ],
          "ecosystem": "Ubuntu:26.04:LTS"
        }
      },
      "ecosystem_specific": {
        "availability": "No subscription required",
        "binaries": [
          {
            "binary_name": "lemon",
            "binary_version": "3.46.1-9ubuntu0.2"
          },
          {
            "binary_name": "libsqlite3-0",
            "binary_version": "3.46.1-9ubuntu0.2"
          },
          {
            "binary_name": "libsqlite3-ext-csv",
            "binary_version": "3.46.1-9ubuntu0.2"
          },
          {
            "binary_name": "libsqlite3-ext-icu",
            "binary_version": "3.46.1-9ubuntu0.2"
          },
          {
            "binary_name": "libsqlite3-tcl",
            "binary_version": "3.46.1-9ubuntu0.2"
          },
          {
            "binary_name": "sqlite3",
            "binary_version": "3.46.1-9ubuntu0.2"
          },
          {
            "binary_name": "sqlite3-tools",
            "binary_version": "3.46.1-9ubuntu0.2"
          }
        ]
      },
      "package": {
        "ecosystem": "Ubuntu:26.04:LTS",
        "name": "sqlite3",
        "purl": "pkg:deb/ubuntu/sqlite3@3.46.1-9ubuntu0.2?arch=source\u0026distro=resolute"
      },
      "ranges": [
        {
          "events": [
            {
              "introduced": "0"
            },
            {
              "fixed": "3.46.1-9ubuntu0.2"
            }
          ],
          "type": "ECOSYSTEM"
        }
      ],
      "versions": [
        "3.46.1-8",
        "3.46.1-9",
        "3.46.1-9ubuntu0.1"
      ]
    }
  ],
  "aliases": [],
  "details": "It was discovered that SQLite did not properly handle NULL pointer\ndereferences in the Session Extension when applying a corrupt changeset.\nAn attacker could possibly use this issue to cause SQLite to crash,\nresulting in a denial of service. (CVE-2026-50812)\n\nIt was discovered that SQLite had a buffer overread in the Session\nExtension when processing a corrupt changeset. An attacker could possibly\nuse this issue to obtain sensitive information. (CVE-2026-50813)",
  "id": "USN-8565-1",
  "modified": "2026-07-20T13:00:41Z",
  "published": "2026-07-20T13:00:41Z",
  "references": [
    {
      "type": "ADVISORY",
      "url": "https://ubuntu.com/security/notices/USN-8565-1"
    },
    {
      "type": "REPORT",
      "url": "https://ubuntu.com/security/CVE-2026-50812"
    },
    {
      "type": "REPORT",
      "url": "https://ubuntu.com/security/CVE-2026-50813"
    }
  ],
  "related": [],
  "schema_version": "1.7.0",
  "summary": "sqlite3 vulnerabilities",
  "upstream": [
    "UBUNTU-CVE-2026-50812",
    "UBUNTU-CVE-2026-50813"
  ]
}

Sightings

Author	Source	Type	Date	Other

Nomenclature

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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.

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.
The approach is described in our paper Mapping CVEs to MITRE ATT&CK Techniques: A Curated Gold-Set Classifier and the Limits of LLM-Assisted Label Expansion.
Browse all ATT&CK techniques and the vulnerabilities related to each.

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Action not permitted

UBUNTU-CVE-2026-50812 (CVE-2026-50812)

CVE-2026-50812 (GCVE-0-2026-50812)

USN-8565-1 (UBUNTU-CVE-2026-50812)

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