CVE-2026-63296 (GCVE-0-2026-63296)

Vulnerability from cvelistv5 – Published: 2026-08-12 19:27 – Updated: 2026-08-13 14:25
VLAI
Title
Project restriction bypass via instance migration config override
Summary
An authorization bypass vulnerability in LXD allows an authenticated attacker to bypass target project restrictions during instance migration. When migrating an instance to a target project, LXD accepts configuration overrides without validating the new configuration against the target project's enforced restrictions. An attacker can exploit this flaw to move instances with disallowed high-privilege configurations into restricted projects, bypassing security controls.
Severity
9.9 (Critical)
CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:C/C:H/I:H/A:H
SSVC
Exploitation: poc Automatable: no Technical Impact: total
CISA Coordinator · CISA-ADP (v2.0.3)
Decision recorded 2026-08-13 14:25 UTC
CWE
  • CWE-863 - Incorrect Authorization
Assigner
canonical CNA under the mitre root
CNA scorecard B 82/100 over 60 records in the last 180 days details
References
URL Tags
https://github.com/canonical/lxd/security/advisor… vdb-entryvendor-advisory
Impacted products
Vendor Product Version CPE status
Canonical LXD Affected: 5.0.0 , < 5.0.8 (semver)
Affected: 5.21.0 , < 5.21.6 (semver)
Affected: 6.0 , < 6.10 (semver)
guessed Create a notification for this product.
Show details on NVD website
To clipboard 

{
  "containers": {
    "adp": [
      {
        "metrics": [
          {
            "other": {
              "content": {
                "id": "CVE-2026-63296",
                "options": [
                  {
                    "Exploitation": "poc"
                  },
                  {
                    "Automatable": "no"
                  },
                  {
                    "Technical Impact": "total"
                  }
                ],
                "role": "CISA Coordinator",
                "timestamp": "2026-08-13T14:25:15.629982Z",
                "version": "2.0.3"
              },
              "type": "ssvc"
            }
          }
        ],
        "providerMetadata": {
          "dateUpdated": "2026-08-13T14:25:39.478Z",
          "orgId": "134c704f-9b21-4f2e-91b3-4a467353bcc0",
          "shortName": "CISA-ADP"
        },
        "references": [
          {
            "tags": [
              "exploit"
            ],
            "url": "https://github.com/canonical/lxd/security/advisories/GHSA-gcr9-5q6r-w625"
          }
        ],
        "title": "CISA ADP Vulnrichment"
      }
    ],
    "cna": {
      "affected": [
        {
          "defaultStatus": "unaffected",
          "packageName": "LXD",
          "platforms": [
            "Linux"
          ],
          "product": "LXD",
          "repo": "https://github.com/canonical/lxd",
          "vendor": "Canonical",
          "versions": [
            {
              "lessThan": "5.0.8",
              "status": "affected",
              "version": "5.0.0",
              "versionType": "semver"
            },
            {
              "lessThan": "5.21.6",
              "status": "affected",
              "version": "5.21.0",
              "versionType": "semver"
            },
            {
              "lessThan": "6.10",
              "status": "affected",
              "version": "6.0",
              "versionType": "semver"
            }
          ]
        }
      ],
      "descriptions": [
        {
          "lang": "en",
          "value": "An authorization bypass vulnerability in LXD allows an authenticated attacker to bypass target project restrictions during instance migration. When migrating an instance to a target project, LXD accepts configuration overrides without validating the new configuration against the target project\u0027s enforced restrictions. An attacker can exploit this flaw to move instances with disallowed high-privilege configurations into restricted projects, bypassing security controls."
        }
      ],
      "impacts": [
        {
          "capecId": "CAPEC-1",
          "descriptions": [
            {
              "lang": "en",
              "value": "Accessing Functionality Not Properly Constrained by ACLs"
            }
          ]
        },
        {
          "capecId": "CAPEC-122",
          "descriptions": [
            {
              "lang": "en",
              "value": "Privilege Abuse"
            }
          ]
        },
        {
          "capecId": "CAPEC-233",
          "descriptions": [
            {
              "lang": "en",
              "value": "Privilege Escalation"
            }
          ]
        }
      ],
      "metrics": [
        {
          "cvssV3_1": {
            "attackComplexity": "LOW",
            "attackVector": "NETWORK",
            "availabilityImpact": "HIGH",
            "baseScore": 9.9,
            "baseSeverity": "CRITICAL",
            "confidentialityImpact": "HIGH",
            "integrityImpact": "HIGH",
            "privilegesRequired": "LOW",
            "scope": "CHANGED",
            "userInteraction": "NONE",
            "vectorString": "CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:C/C:H/I:H/A:H",
            "version": "3.1"
          },
          "format": "CVSS",
          "scenarios": [
            {
              "lang": "en",
              "value": "GENERAL"
            }
          ]
        }
      ],
      "problemTypes": [
        {
          "descriptions": [
            {
              "cweId": "CWE-863",
              "description": "CWE-863 Incorrect Authorization",
              "lang": "en",
              "type": "CWE"
            }
          ]
        }
      ],
      "providerMetadata": {
        "dateUpdated": "2026-08-12T19:27:45.736Z",
        "orgId": "cc1ad9ee-3454-478d-9317-d3e869d708bc",
        "shortName": "canonical"
      },
      "references": [
        {
          "tags": [
            "vdb-entry",
            "vendor-advisory"
          ],
          "url": "https://github.com/canonical/lxd/security/advisories/GHSA-gcr9-5q6r-w625"
        }
      ],
      "solutions": [
        {
          "lang": "en",
          "value": "Upgrade to LXD version 5.0.8 or later, or 5.12.6 or later, or 6.10 or later."
        }
      ],
      "source": {
        "discovery": "EXTERNAL"
      },
      "title": "Project restriction bypass via instance migration config override"
    }
  },
  "cveMetadata": {
    "assignerOrgId": "cc1ad9ee-3454-478d-9317-d3e869d708bc",
    "assignerShortName": "canonical",
    "cveId": "CVE-2026-63296",
    "datePublished": "2026-08-12T19:27:45.736Z",
    "dateReserved": "2026-07-16T09:49:29.911Z",
    "dateUpdated": "2026-08-13T14:25:39.478Z",
    "state": "PUBLISHED"
  },
  "dataType": "CVE_RECORD",
  "dataVersion": "5.2",
  "vulnerability-lookup:meta": {
    "epss": {
      "cve": "CVE-2026-63296",
      "date": "2026-11-08",
      "epss": "0.00444",
      "percentile": "0.389"
    },
    "nvd": {
      "cve": {
        "affected": [
          {
            "affectedData": [
              {
                "defaultStatus": "unaffected",
                "packageName": "LXD",
                "platforms": [
                  "Linux"
                ],
                "product": "LXD",
                "repo": "https://github.com/canonical/lxd",
                "vendor": "Canonical",
                "versions": [
                  {
                    "lessThan": "5.0.8",
                    "status": "affected",
                    "version": "5.0.0",
                    "versionType": "semver"
                  },
                  {
                    "lessThan": "5.21.6",
                    "status": "affected",
                    "version": "5.21.0",
                    "versionType": "semver"
                  },
                  {
                    "lessThan": "6.10",
                    "status": "affected",
                    "version": "6.0",
                    "versionType": "semver"
                  }
                ]
              }
            ],
            "source": "security@ubuntu.com"
          }
        ],
        "configurations": [
          {
            "nodes": [
              {
                "cpeMatch": [
                  {
                    "criteria": "cpe:2.3:a:canonical:lxd:*:*:*:*:*:*:*:*",
                    "matchCriteriaId": "59D070D6-84D2-400E-8260-EA52E5C60D37",
                    "versionEndExcluding": "5.0.8",
                    "versionStartIncluding": "5.0.0",
                    "vulnerable": true
                  },
                  {
                    "criteria": "cpe:2.3:a:canonical:lxd:*:*:*:*:*:*:*:*",
                    "matchCriteriaId": "575036D1-2B55-4043-B94A-1584E3F2DA37",
                    "versionEndExcluding": "5.21.6",
                    "versionStartIncluding": "5.1",
                    "vulnerable": true
                  },
                  {
                    "criteria": "cpe:2.3:a:canonical:lxd:*:*:*:*:*:*:*:*",
                    "matchCriteriaId": "374F5622-1D8F-4EF9-97E6-736C8220623B",
                    "versionEndExcluding": "6.10",
                    "versionStartIncluding": "6.0",
                    "vulnerable": true
                  }
                ],
                "negate": false,
                "operator": "OR"
              }
            ]
          }
        ],
        "cveTags": [],
        "descriptions": [
          {
            "lang": "en",
            "value": "An authorization bypass vulnerability in LXD allows an authenticated attacker to bypass target project restrictions during instance migration. When migrating an instance to a target project, LXD accepts configuration overrides without validating the new configuration against the target project\u0027s enforced restrictions. An attacker can exploit this flaw to move instances with disallowed high-privilege configurations into restricted projects, bypassing security controls."
          },
          {
            "lang": "es",
            "value": "Una vulnerabilidad de omisi\u00f3n de autorizaci\u00f3n en LXD permite a un atacante autenticado omitir las restricciones del proyecto de destino durante la migraci\u00f3n de instancias. Al migrar una instancia a un proyecto de destino, LXD acepta anulaciones de configuraci\u00f3n sin validar la nueva configuraci\u00f3n contra las restricciones impuestas por el proyecto de destino. Un atacante puede explotar esta falla para mover instancias con configuraciones de alto privilegio no permitidas a proyectos restringidos, omitiendo los controles de seguridad."
          }
        ],
        "id": "CVE-2026-63296",
        "lastModified": "2026-10-24T16:10:00.153",
        "metrics": {
          "cvssMetricV31": [
            {
              "cvssData": {
                "attackComplexity": "LOW",
                "attackVector": "NETWORK",
                "availabilityImpact": "HIGH",
                "baseScore": 9.9,
                "baseSeverity": "CRITICAL",
                "confidentialityImpact": "HIGH",
                "integrityImpact": "HIGH",
                "privilegesRequired": "LOW",
                "scope": "CHANGED",
                "userInteraction": "NONE",
                "vectorString": "CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:C/C:H/I:H/A:H",
                "version": "3.1"
              },
              "exploitabilityScore": 3.1,
              "impactScore": 6.0,
              "source": "security@ubuntu.com",
              "type": "Secondary"
            }
          ],
          "ssvcV203": [
            {
              "source": "134c704f-9b21-4f2e-91b3-4a467353bcc0",
              "ssvcData": {
                "id": "CVE-2026-63296",
                "options": [
                  {
                    "exploitation": "poc"
                  },
                  {
                    "automatable": "no"
                  },
                  {
                    "technicalImpact": "total"
                  }
                ],
                "role": "CISA Coordinator",
                "timestamp": "2026-08-13T14:25:15.629982Z",
                "version": "2.0.3"
              }
            }
          ]
        },
        "published": "2026-08-12T20:17:47.437",
        "references": [
          {
            "source": "security@ubuntu.com",
            "tags": [
              "Vendor Advisory",
              "Exploit",
              "Mitigation"
            ],
            "url": "https://github.com/canonical/lxd/security/advisories/GHSA-gcr9-5q6r-w625"
          },
          {
            "source": "134c704f-9b21-4f2e-91b3-4a467353bcc0",
            "tags": [
              "Vendor Advisory",
              "Exploit",
              "Mitigation"
            ],
            "url": "https://github.com/canonical/lxd/security/advisories/GHSA-gcr9-5q6r-w625"
          }
        ],
        "sourceIdentifier": "security@ubuntu.com",
        "vulnStatus": "Analyzed",
        "weaknesses": [
          {
            "description": [
              {
                "lang": "en",
                "value": "CWE-863"
              }
            ],
            "source": "security@ubuntu.com",
            "type": "Secondary"
          }
        ]
      }
    },
    "suse_vex": {
      "aggregate_severity": "critical",
      "current_release_date": "2026-08-13T16:25:14Z",
      "cve": "CVE-2026-63296",
      "id": "CVE-2026-63296",
      "initial_release_date": "2026-08-13T16:25:14Z",
      "source": "SUSE CSAF VEX",
      "status": "interim",
      "title": "SUSE CVE CVE-2026-63296",
      "url": "https://ftp.suse.com/pub/projects/security/csaf-vex/cve-2026-63296.json",
      "version": "2"
    },
    "vulnrichment": {
      "containers": {
        "adp": [
          {
            "metrics": [
              {
                "other": {
                  "content": {
                    "id": "CVE-2026-63296",
                    "options": [
                      {
                        "Exploitation": "poc"
                      },
                      {
                        "Automatable": "no"
                      },
                      {
                        "Technical Impact": "total"
                      }
                    ],
                    "role": "CISA Coordinator",
                    "timestamp": "2026-08-13T14:25:15.629982Z",
                    "version": "2.0.3"
                  },
                  "type": "ssvc"
                }
              }
            ],
            "providerMetadata": {
              "dateUpdated": "2026-08-13T14:25:36.620Z",
              "orgId": "134c704f-9b21-4f2e-91b3-4a467353bcc0",
              "shortName": "CISA-ADP"
            },
            "references": [
              {
                "tags": [
                  "exploit"
                ],
                "url": "https://github.com/canonical/lxd/security/advisories/GHSA-gcr9-5q6r-w625"
              }
            ],
            "title": "CISA ADP Vulnrichment"
          }
        ],
        "cna": {
          "affected": [
            {
              "defaultStatus": "unaffected",
              "packageName": "LXD",
              "platforms": [
                "Linux"
              ],
              "product": "LXD",
              "repo": "https://github.com/canonical/lxd",
              "vendor": "Canonical",
              "versions": [
                {
                  "lessThan": "5.0.8",
                  "status": "affected",
                  "version": "5.0.0",
                  "versionType": "semver"
                },
                {
                  "lessThan": "5.21.6",
                  "status": "affected",
                  "version": "5.21.0",
                  "versionType": "semver"
                },
                {
                  "lessThan": "6.10",
                  "status": "affected",
                  "version": "6.0",
                  "versionType": "semver"
                }
              ]
            }
          ],
          "descriptions": [
            {
              "lang": "en",
              "value": "An authorization bypass vulnerability in LXD allows an authenticated attacker to bypass target project restrictions during instance migration. When migrating an instance to a target project, LXD accepts configuration overrides without validating the new configuration against the target project\u0027s enforced restrictions. An attacker can exploit this flaw to move instances with disallowed high-privilege configurations into restricted projects, bypassing security controls."
            }
          ],
          "impacts": [
            {
              "capecId": "CAPEC-1",
              "descriptions": [
                {
                  "lang": "en",
                  "value": "Accessing Functionality Not Properly Constrained by ACLs"
                }
              ]
            },
            {
              "capecId": "CAPEC-122",
              "descriptions": [
                {
                  "lang": "en",
                  "value": "Privilege Abuse"
                }
              ]
            },
            {
              "capecId": "CAPEC-233",
              "descriptions": [
                {
                  "lang": "en",
                  "value": "Privilege Escalation"
                }
              ]
            }
          ],
          "metrics": [
            {
              "cvssV3_1": {
                "attackComplexity": "LOW",
                "attackVector": "NETWORK",
                "availabilityImpact": "HIGH",
                "baseScore": 9.9,
                "baseSeverity": "CRITICAL",
                "confidentialityImpact": "HIGH",
                "integrityImpact": "HIGH",
                "privilegesRequired": "LOW",
                "scope": "CHANGED",
                "userInteraction": "NONE",
                "vectorString": "CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:C/C:H/I:H/A:H",
                "version": "3.1"
              },
              "format": "CVSS",
              "scenarios": [
                {
                  "lang": "en",
                  "value": "GENERAL"
                }
              ]
            }
          ],
          "problemTypes": [
            {
              "descriptions": [
                {
                  "cweId": "CWE-863",
                  "description": "CWE-863 Incorrect Authorization",
                  "lang": "en",
                  "type": "CWE"
                }
              ]
            }
          ],
          "providerMetadata": {
            "dateUpdated": "2026-08-12T19:27:45.736Z",
            "orgId": "cc1ad9ee-3454-478d-9317-d3e869d708bc",
            "shortName": "canonical"
          },
          "references": [
            {
              "tags": [
                "vdb-entry",
                "vendor-advisory"
              ],
              "url": "https://github.com/canonical/lxd/security/advisories/GHSA-gcr9-5q6r-w625"
            }
          ],
          "solutions": [
            {
              "lang": "en",
              "value": "Upgrade to LXD version 5.0.8 or later, or 5.12.6 or later, or 6.10 or later."
            }
          ],
          "source": {
            "discovery": "EXTERNAL"
          },
          "title": "Project restriction bypass via instance migration config override"
        }
      },
      "cveMetadata": {
        "assignerOrgId": "cc1ad9ee-3454-478d-9317-d3e869d708bc",
        "assignerShortName": "canonical",
        "cveId": "CVE-2026-63296",
        "datePublished": "2026-08-12T19:27:45.736Z",
        "dateReserved": "2026-07-16T09:49:29.911Z",
        "dateUpdated": "2026-08-13T14:25:39.478Z",
        "state": "PUBLISHED"
      },
      "dataType": "CVE_RECORD",
      "dataVersion": "5.2"
    }
  }
}



Log in or create an account to share your comment.




Tags
Taxonomy of the tags.




Drag nodes to arrange them. Double-click a related vulnerability to open it, or a source to visit its link. The Physics button on the left tunes the layout and the simulation; the legend at the bottom left hides or shows nodes by kind and by sighting type.

Forecast uses a logistic model when the trend is rising, or an exponential decay model when the trend is falling. Fitted via linearized least squares.

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.
Vulnerability timeline

Sightings and recorded dates, grouped by day · UTC

JSON
How durations are calculated

Following the VTEM framework (Black Hat USA 2015), time to patch starts when the vendor or a coordinator was informed, total time to patch at discovery, and disclosure to patch at public disclosure; vendor response time runs from the report to its acknowledgement. Time to exploit and time unpatched start at the earliest discovery or report, falling back to public disclosure. Unpatched time ends at the first recorded patch, or the calculation time when no patch is recorded. Exploitation to patch shows the interval between those two events; a published proof of concept is a public exploit, not exploitation.

Each result shows its source dates. A negative interval means the end event came first; when date-only inputs leave the order open, the result says so. Date-only inputs are approximate. The earliest evidence wins: KEV report dates and sightings are labelled as such. Records describing another vulnerability are listed but never calculated from, and a PoC alone does not establish exploitation. Missing patch evidence does not prove that no patch exists. Filters below change the event list only.

Loading timeline…




    Related by attack behaviour

    Vulnerabilities whose description is nearest to this one in the vector space of the CIRCL/vulnerability-attack-technique-biencoder model. This is a similarity search over the bi-encoder space (plain cosine), not a classification, and it has no measured accuracy.