CVE-2026-44517 (GCVE-0-2026-44517)

Vulnerability from cvelistv5 – Published: 2026-08-21 20:29 – Updated: 2026-08-25 17:07
VLAI
Title
Buildah: Build breakout using malicious Containerfile and Git Smart HTTP server or GitHub release tar archive
Summary
Buildah is a tool that facilitates building OCI images. From 1.38.1 until 1.43.2 and 1.44.0, TempDirForURL in define/types.go does not securely confine Git repository subdirectories to the downloaded build context, and downloadToDirectory and stdinToDirectory can follow a Dockerfile symlink left by a partially extracted tar archive. A malicious server supplying a Git repository or tar archive can cause files outside the build context directory to be included in the context or copied into the build. This issue is fixed in versions 1.43.2 and 1.44.0.
Severity
6.3 (Medium)
CVSS:3.1/AV:L/AC:L/PR:N/UI:R/S:C/C:H/I:N/A:N
SSVC
Exploitation: none Automatable: no Technical Impact: partial
CISA Coordinator · CISA-ADP (v2.0.3)
Decision recorded 2026-08-25 17:05 UTC
CWE
  • CWE-22 - Improper Limitation of a Pathname to a Restricted Directory ('Path Traversal')
Assigner
GitHub_M CNA under the mitre root
CNA scorecard C 72/100 over 7771 records in the last 180 days details
References
Impacted products
Vendor Product Version CPE status
containers buildah Affected: >= 1.38.1, < 1.43.2
guessed Create a notification for this product.
Show details on NVD website
To clipboard 

{
  "containers": {
    "adp": [
      {
        "metrics": [
          {
            "other": {
              "content": {
                "id": "CVE-2026-44517",
                "options": [
                  {
                    "Exploitation": "none"
                  },
                  {
                    "Automatable": "no"
                  },
                  {
                    "Technical Impact": "partial"
                  }
                ],
                "role": "CISA Coordinator",
                "timestamp": "2026-08-25T17:05:33.478033Z",
                "version": "2.0.3"
              },
              "type": "ssvc"
            }
          }
        ],
        "providerMetadata": {
          "dateUpdated": "2026-08-25T17:07:10.143Z",
          "orgId": "134c704f-9b21-4f2e-91b3-4a467353bcc0",
          "shortName": "CISA-ADP"
        },
        "title": "CISA ADP Vulnrichment"
      }
    ],
    "cna": {
      "affected": [
        {
          "product": "buildah",
          "vendor": "containers",
          "versions": [
            {
              "status": "affected",
              "version": "\u003e= 1.38.1, \u003c 1.43.2"
            }
          ]
        }
      ],
      "descriptions": [
        {
          "lang": "en",
          "value": "Buildah is a tool that facilitates building OCI images. From 1.38.1 until 1.43.2 and 1.44.0, TempDirForURL in define/types.go does not securely confine Git repository subdirectories to the downloaded build context, and downloadToDirectory and stdinToDirectory can follow a Dockerfile symlink left by a partially extracted tar archive. A malicious server supplying a Git repository or tar archive can cause files outside the build context directory to be included in the context or copied into the build. This issue is fixed in versions 1.43.2 and 1.44.0."
        }
      ],
      "metrics": [
        {
          "cvssV3_1": {
            "attackComplexity": "LOW",
            "attackVector": "LOCAL",
            "availabilityImpact": "NONE",
            "baseScore": 6.3,
            "baseSeverity": "MEDIUM",
            "confidentialityImpact": "HIGH",
            "integrityImpact": "NONE",
            "privilegesRequired": "NONE",
            "scope": "CHANGED",
            "userInteraction": "REQUIRED",
            "vectorString": "CVSS:3.1/AV:L/AC:L/PR:N/UI:R/S:C/C:H/I:N/A:N",
            "version": "3.1"
          }
        }
      ],
      "problemTypes": [
        {
          "descriptions": [
            {
              "cweId": "CWE-22",
              "description": "CWE-22: Improper Limitation of a Pathname to a Restricted Directory (\u0027Path Traversal\u0027)",
              "lang": "en",
              "type": "CWE"
            }
          ]
        }
      ],
      "providerMetadata": {
        "dateUpdated": "2026-08-21T20:29:00.354Z",
        "orgId": "a0819718-46f1-4df5-94e2-005712e83aaa",
        "shortName": "GitHub_M"
      },
      "references": [
        {
          "name": "https://github.com/podman-container-tools/buildah/security/advisories/GHSA-49p4-px3h-rq49",
          "tags": [
            "x_refsource_CONFIRM"
          ],
          "url": "https://github.com/podman-container-tools/buildah/security/advisories/GHSA-49p4-px3h-rq49"
        },
        {
          "name": "https://github.com/podman-container-tools/buildah/commit/54459cf8a0feb4b1da766e4a6360451834e1846c",
          "tags": [
            "x_refsource_MISC"
          ],
          "url": "https://github.com/podman-container-tools/buildah/commit/54459cf8a0feb4b1da766e4a6360451834e1846c"
        },
        {
          "name": "https://github.com/podman-container-tools/buildah/commit/fc2003bb2efeb3ed7d5c7e1e88d04e78f370a944",
          "tags": [
            "x_refsource_MISC"
          ],
          "url": "https://github.com/podman-container-tools/buildah/commit/fc2003bb2efeb3ed7d5c7e1e88d04e78f370a944"
        },
        {
          "name": "https://github.com/podman-container-tools/buildah/releases/tag/v1.43.2",
          "tags": [
            "x_refsource_MISC"
          ],
          "url": "https://github.com/podman-container-tools/buildah/releases/tag/v1.43.2"
        },
        {
          "name": "https://github.com/podman-container-tools/buildah/releases/tag/v1.44.0",
          "tags": [
            "x_refsource_MISC"
          ],
          "url": "https://github.com/podman-container-tools/buildah/releases/tag/v1.44.0"
        }
      ],
      "source": {
        "advisory": "GHSA-49p4-px3h-rq49",
        "discovery": "UNKNOWN"
      },
      "title": "Buildah: Build breakout using malicious Containerfile and Git Smart HTTP server or GitHub release tar archive"
    }
  },
  "cveMetadata": {
    "assignerOrgId": "a0819718-46f1-4df5-94e2-005712e83aaa",
    "assignerShortName": "GitHub_M",
    "cveId": "CVE-2026-44517",
    "datePublished": "2026-08-21T20:29:00.354Z",
    "dateReserved": "2026-05-06T18:28:20.888Z",
    "dateUpdated": "2026-08-25T17:07:10.143Z",
    "state": "PUBLISHED"
  },
  "dataType": "CVE_RECORD",
  "dataVersion": "5.2",
  "vulnerability-lookup:meta": {
    "epss": {
      "cve": "CVE-2026-44517",
      "date": "2026-10-16",
      "epss": "0.00184",
      "percentile": "0.07428"
    },
    "nvd": {
      "cve": {
        "affected": [
          {
            "affectedData": [
              {
                "product": "buildah",
                "vendor": "containers",
                "versions": [
                  {
                    "status": "affected",
                    "version": "\u003e= 1.38.1, \u003c 1.43.2"
                  }
                ]
              }
            ],
            "source": "security-advisories@github.com"
          }
        ],
        "cveTags": [],
        "descriptions": [
          {
            "lang": "en",
            "value": "Buildah is a tool that facilitates building OCI images. From 1.38.1 until 1.43.2 and 1.44.0, TempDirForURL in define/types.go does not securely confine Git repository subdirectories to the downloaded build context, and downloadToDirectory and stdinToDirectory can follow a Dockerfile symlink left by a partially extracted tar archive. A malicious server supplying a Git repository or tar archive can cause files outside the build context directory to be included in the context or copied into the build. This issue is fixed in versions 1.43.2 and 1.44.0."
          },
          {
            "lang": "es",
            "value": "Buildah es una herramienta que facilita la creaci\u00f3n de im\u00e1genes OCI. Desde la versi\u00f3n 1.38.1 hasta la 1.43.2 y la 1.44.0, TempDirForURL en define/types.go no confina de forma segura los subdirectorios del repositorio Git al contexto de construcci\u00f3n descargado, y downloadToDirectory y stdinToDirectory pueden seguir un enlace simb\u00f3lico de Dockerfile dejado por un archivo tar parcialmente extra\u00eddo. Un servidor malicioso que suministra un repositorio Git o un archivo tar puede hacer que los archivos fuera del directorio del contexto de construcci\u00f3n se incluyan en el contexto o se copien en la construcci\u00f3n. Este problema est\u00e1 corregido en las versiones 1.43.2 y 1.44.0."
          }
        ],
        "id": "CVE-2026-44517",
        "lastModified": "2026-10-12T16:10:00.220",
        "metrics": {
          "cvssMetricV31": [
            {
              "cvssData": {
                "attackComplexity": "LOW",
                "attackVector": "LOCAL",
                "availabilityImpact": "NONE",
                "baseScore": 6.3,
                "baseSeverity": "MEDIUM",
                "confidentialityImpact": "HIGH",
                "integrityImpact": "NONE",
                "privilegesRequired": "NONE",
                "scope": "CHANGED",
                "userInteraction": "REQUIRED",
                "vectorString": "CVSS:3.1/AV:L/AC:L/PR:N/UI:R/S:C/C:H/I:N/A:N",
                "version": "3.1"
              },
              "exploitabilityScore": 1.8,
              "impactScore": 4.0,
              "source": "security-advisories@github.com",
              "type": "Secondary"
            }
          ],
          "ssvcV203": [
            {
              "source": "134c704f-9b21-4f2e-91b3-4a467353bcc0",
              "ssvcData": {
                "id": "CVE-2026-44517",
                "options": [
                  {
                    "exploitation": "none"
                  },
                  {
                    "automatable": "no"
                  },
                  {
                    "technicalImpact": "partial"
                  }
                ],
                "role": "CISA Coordinator",
                "timestamp": "2026-08-25T17:05:33.478033Z",
                "version": "2.0.3"
              }
            }
          ]
        },
        "published": "2026-08-21T21:16:59.250",
        "references": [
          {
            "source": "security-advisories@github.com",
            "url": "https://github.com/podman-container-tools/buildah/commit/54459cf8a0feb4b1da766e4a6360451834e1846c"
          },
          {
            "source": "security-advisories@github.com",
            "url": "https://github.com/podman-container-tools/buildah/commit/fc2003bb2efeb3ed7d5c7e1e88d04e78f370a944"
          },
          {
            "source": "security-advisories@github.com",
            "url": "https://github.com/podman-container-tools/buildah/releases/tag/v1.43.2"
          },
          {
            "source": "security-advisories@github.com",
            "url": "https://github.com/podman-container-tools/buildah/releases/tag/v1.44.0"
          },
          {
            "source": "security-advisories@github.com",
            "url": "https://github.com/podman-container-tools/buildah/security/advisories/GHSA-49p4-px3h-rq49"
          }
        ],
        "sourceIdentifier": "security-advisories@github.com",
        "vulnStatus": "Awaiting Analysis",
        "weaknesses": [
          {
            "description": [
              {
                "lang": "en",
                "value": "CWE-22"
              }
            ],
            "source": "security-advisories@github.com",
            "type": "Secondary"
          }
        ]
      }
    },
    "redhat_vex": {
      "aggregate_severity": "Moderate",
      "current_release_date": "2026-08-24T19:06:21+00:00",
      "cve": "CVE-2026-44517",
      "id": "CVE-2026-44517",
      "initial_release_date": "2026-08-21T20:29:00.354000+00:00",
      "product_status:known_affected": "40",
      "product_status:known_not_affected": "22",
      "source": "Red Hat CSAF VEX",
      "status": "final",
      "title": "github.com/containers/buildah: Buildah: Build breakout via malicious Git repository or tar archive",
      "url": "https://security.access.redhat.com/data/csaf/v2/vex/2026/cve-2026-44517.json",
      "version": "3"
    },
    "vulnrichment": {
      "containers": {
        "adp": [
          {
            "metrics": [
              {
                "other": {
                  "content": {
                    "id": "CVE-2026-44517",
                    "options": [
                      {
                        "Exploitation": "none"
                      },
                      {
                        "Automatable": "no"
                      },
                      {
                        "Technical Impact": "partial"
                      }
                    ],
                    "role": "CISA Coordinator",
                    "timestamp": "2026-08-25T17:05:33.478033Z",
                    "version": "2.0.3"
                  },
                  "type": "ssvc"
                }
              }
            ],
            "providerMetadata": {
              "dateUpdated": "2026-08-25T17:06:19.788Z",
              "orgId": "134c704f-9b21-4f2e-91b3-4a467353bcc0",
              "shortName": "CISA-ADP"
            },
            "title": "CISA ADP Vulnrichment"
          }
        ],
        "cna": {
          "affected": [
            {
              "product": "buildah",
              "vendor": "containers",
              "versions": [
                {
                  "status": "affected",
                  "version": "\u003e= 1.38.1, \u003c 1.43.2"
                }
              ]
            }
          ],
          "descriptions": [
            {
              "lang": "en",
              "value": "Buildah is a tool that facilitates building OCI images. From 1.38.1 until 1.43.2 and 1.44.0, TempDirForURL in define/types.go does not securely confine Git repository subdirectories to the downloaded build context, and downloadToDirectory and stdinToDirectory can follow a Dockerfile symlink left by a partially extracted tar archive. A malicious server supplying a Git repository or tar archive can cause files outside the build context directory to be included in the context or copied into the build. This issue is fixed in versions 1.43.2 and 1.44.0."
            }
          ],
          "metrics": [
            {
              "cvssV3_1": {
                "attackComplexity": "LOW",
                "attackVector": "LOCAL",
                "availabilityImpact": "NONE",
                "baseScore": 6.3,
                "baseSeverity": "MEDIUM",
                "confidentialityImpact": "HIGH",
                "integrityImpact": "NONE",
                "privilegesRequired": "NONE",
                "scope": "CHANGED",
                "userInteraction": "REQUIRED",
                "vectorString": "CVSS:3.1/AV:L/AC:L/PR:N/UI:R/S:C/C:H/I:N/A:N",
                "version": "3.1"
              }
            }
          ],
          "problemTypes": [
            {
              "descriptions": [
                {
                  "cweId": "CWE-22",
                  "description": "CWE-22: Improper Limitation of a Pathname to a Restricted Directory (\u0027Path Traversal\u0027)",
                  "lang": "en",
                  "type": "CWE"
                }
              ]
            }
          ],
          "providerMetadata": {
            "dateUpdated": "2026-08-21T20:29:00.354Z",
            "orgId": "a0819718-46f1-4df5-94e2-005712e83aaa",
            "shortName": "GitHub_M"
          },
          "references": [
            {
              "name": "https://github.com/podman-container-tools/buildah/security/advisories/GHSA-49p4-px3h-rq49",
              "tags": [
                "x_refsource_CONFIRM"
              ],
              "url": "https://github.com/podman-container-tools/buildah/security/advisories/GHSA-49p4-px3h-rq49"
            },
            {
              "name": "https://github.com/podman-container-tools/buildah/commit/54459cf8a0feb4b1da766e4a6360451834e1846c",
              "tags": [
                "x_refsource_MISC"
              ],
              "url": "https://github.com/podman-container-tools/buildah/commit/54459cf8a0feb4b1da766e4a6360451834e1846c"
            },
            {
              "name": "https://github.com/podman-container-tools/buildah/commit/fc2003bb2efeb3ed7d5c7e1e88d04e78f370a944",
              "tags": [
                "x_refsource_MISC"
              ],
              "url": "https://github.com/podman-container-tools/buildah/commit/fc2003bb2efeb3ed7d5c7e1e88d04e78f370a944"
            },
            {
              "name": "https://github.com/podman-container-tools/buildah/releases/tag/v1.43.2",
              "tags": [
                "x_refsource_MISC"
              ],
              "url": "https://github.com/podman-container-tools/buildah/releases/tag/v1.43.2"
            },
            {
              "name": "https://github.com/podman-container-tools/buildah/releases/tag/v1.44.0",
              "tags": [
                "x_refsource_MISC"
              ],
              "url": "https://github.com/podman-container-tools/buildah/releases/tag/v1.44.0"
            }
          ],
          "source": {
            "advisory": "GHSA-49p4-px3h-rq49",
            "discovery": "UNKNOWN"
          },
          "title": "Buildah: Build breakout using malicious Containerfile and Git Smart HTTP server or GitHub release tar archive"
        }
      },
      "cveMetadata": {
        "assignerOrgId": "a0819718-46f1-4df5-94e2-005712e83aaa",
        "assignerShortName": "GitHub_M",
        "cveId": "CVE-2026-44517",
        "datePublished": "2026-08-21T20:29:00.354Z",
        "dateReserved": "2026-05-06T18:28:20.888Z",
        "dateUpdated": "2026-08-25T17:07:10.143Z",
        "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

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.