{
  "document": {
    "aggregate_severity": {
      "text": "Important"
    },
    "category": "csaf_security_advisory",
    "csaf_version": "2.0",
    "distribution": {
      "text": "TuxCare License Agreement",
      "tlp": {
        "label": "WHITE",
        "url": "https://www.first.org/tlp/"
      }
    },
    "lang": "en",
    "notes": [
      {
        "category": "legal_disclaimer",
        "text": "This content is licensed under the Creative Commons Attribution 4.0 International License (https://creativecommons.org/licenses/by/4.0/). If you distribute this content, or a modified version of it, you must provide attribution to Cloud Linux Inc. and provide a link to the original.",
        "title": "Terms of Use"
      },
      {
        "category": "details",
        "text": "CVE-2026-34079: fix arbitrary host file deletion via app-controlled ld.so cache\n  symlink in flatpak_switch_symlink_and_remove",
        "title": "Details"
      }
    ],
    "publisher": {
      "category": "vendor",
      "contact_details": "https://tuxcare.com/contact/",
      "name": "TuxCare",
      "namespace": "https://tuxcare.com/"
    },
    "references": [
      {
        "category": "self",
        "summary": "https://cve.tuxcare.com/els/releases/CLSA-2026:1779700633",
        "url": "https://cve.tuxcare.com/els/releases/CLSA-2026:1779700633"
      },
      {
        "category": "self",
        "summary": "Canonical URL",
        "url": "https://security.tuxcare.com/csaf/v2/els_os/amazonlinux2els/advisories/2026/clsa-2026_1779700633.json"
      }
    ],
    "tracking": {
      "current_release_date": "2026-05-25T09:17:43Z",
      "generator": {
        "date": "2026-05-25T09:17:43Z",
        "engine": {
          "name": "pyCSAF"
        }
      },
      "id": "CLSA-2026:1779700633",
      "initial_release_date": "2026-05-25T09:17:43Z",
      "revision_history": [
        {
          "date": "2026-05-25T09:17:43Z",
          "number": "1",
          "summary": "Initial version"
        }
      ],
      "status": "final",
      "version": "1"
    },
    "title": "flatpak: Fix of CVE-2026-34079"
  },
  "product_tree": {
    "branches": [
      {
        "branches": [
          {
            "branches": [
              {
                "category": "product_name",
                "name": "Amazon Linux 2",
                "product": {
                  "name": "Amazon Linux 2",
                  "product_id": "Amazon-Linux-2",
                  "product_identification_helper": {
                    "cpe": "cpe:2.3:o:amazon:amazon_linux:2:*:*:*:*:*:*:*"
                  }
                }
              }
            ],
            "category": "product_family",
            "name": "Amazon Linux"
          }
        ],
        "category": "vendor",
        "name": "Amazon Web Services, Inc."
      },
      {
        "branches": [
          {
            "branches": [
              {
                "category": "product_version",
                "name": "flatpak-libs-0:1.0.9-10.amzn2.0.7.tuxcare.els1.x86_64",
                "product": {
                  "name": "flatpak-libs-0:1.0.9-10.amzn2.0.7.tuxcare.els1.x86_64",
                  "product_id": "flatpak-libs-0:1.0.9-10.amzn2.0.7.tuxcare.els1.x86_64",
                  "product_identification_helper": {
                    "purl": "pkg:rpm/tuxcare/flatpak-libs@1.0.9-10.amzn2.0.7.tuxcare.els1?arch=x86_64"
                  }
                }
              },
              {
                "category": "product_version",
                "name": "flatpak-devel-0:1.0.9-10.amzn2.0.7.tuxcare.els1.x86_64",
                "product": {
                  "name": "flatpak-devel-0:1.0.9-10.amzn2.0.7.tuxcare.els1.x86_64",
                  "product_id": "flatpak-devel-0:1.0.9-10.amzn2.0.7.tuxcare.els1.x86_64",
                  "product_identification_helper": {
                    "purl": "pkg:rpm/tuxcare/flatpak-devel@1.0.9-10.amzn2.0.7.tuxcare.els1?arch=x86_64"
                  }
                }
              },
              {
                "category": "product_version",
                "name": "flatpak-builder-0:1.0.0-10.amzn2.0.7.tuxcare.els1.x86_64",
                "product": {
                  "name": "flatpak-builder-0:1.0.0-10.amzn2.0.7.tuxcare.els1.x86_64",
                  "product_id": "flatpak-builder-0:1.0.0-10.amzn2.0.7.tuxcare.els1.x86_64",
                  "product_identification_helper": {
                    "purl": "pkg:rpm/tuxcare/flatpak-builder@1.0.0-10.amzn2.0.7.tuxcare.els1?arch=x86_64"
                  }
                }
              },
              {
                "category": "product_version",
                "name": "flatpak-0:1.0.9-10.amzn2.0.7.tuxcare.els1.x86_64",
                "product": {
                  "name": "flatpak-0:1.0.9-10.amzn2.0.7.tuxcare.els1.x86_64",
                  "product_id": "flatpak-0:1.0.9-10.amzn2.0.7.tuxcare.els1.x86_64",
                  "product_identification_helper": {
                    "purl": "pkg:rpm/tuxcare/flatpak@1.0.9-10.amzn2.0.7.tuxcare.els1?arch=x86_64"
                  }
                }
              }
            ],
            "category": "architecture",
            "name": "x86_64"
          }
        ],
        "category": "vendor",
        "name": "TuxCare"
      }
    ],
    "relationships": [
      {
        "category": "default_component_of",
        "full_product_name": {
          "name": "flatpak-libs-0:1.0.9-10.amzn2.0.7.tuxcare.els1.x86_64 as a component of Amazon Linux 2",
          "product_id": "Amazon-Linux-2:flatpak-libs-0:1.0.9-10.amzn2.0.7.tuxcare.els1.x86_64"
        },
        "product_reference": "flatpak-libs-0:1.0.9-10.amzn2.0.7.tuxcare.els1.x86_64",
        "relates_to_product_reference": "Amazon-Linux-2"
      },
      {
        "category": "default_component_of",
        "full_product_name": {
          "name": "flatpak-devel-0:1.0.9-10.amzn2.0.7.tuxcare.els1.x86_64 as a component of Amazon Linux 2",
          "product_id": "Amazon-Linux-2:flatpak-devel-0:1.0.9-10.amzn2.0.7.tuxcare.els1.x86_64"
        },
        "product_reference": "flatpak-devel-0:1.0.9-10.amzn2.0.7.tuxcare.els1.x86_64",
        "relates_to_product_reference": "Amazon-Linux-2"
      },
      {
        "category": "default_component_of",
        "full_product_name": {
          "name": "flatpak-builder-0:1.0.0-10.amzn2.0.7.tuxcare.els1.x86_64 as a component of Amazon Linux 2",
          "product_id": "Amazon-Linux-2:flatpak-builder-0:1.0.0-10.amzn2.0.7.tuxcare.els1.x86_64"
        },
        "product_reference": "flatpak-builder-0:1.0.0-10.amzn2.0.7.tuxcare.els1.x86_64",
        "relates_to_product_reference": "Amazon-Linux-2"
      },
      {
        "category": "default_component_of",
        "full_product_name": {
          "name": "flatpak-0:1.0.9-10.amzn2.0.7.tuxcare.els1.x86_64 as a component of Amazon Linux 2",
          "product_id": "Amazon-Linux-2:flatpak-0:1.0.9-10.amzn2.0.7.tuxcare.els1.x86_64"
        },
        "product_reference": "flatpak-0:1.0.9-10.amzn2.0.7.tuxcare.els1.x86_64",
        "relates_to_product_reference": "Amazon-Linux-2"
      }
    ]
  },
  "vulnerabilities": [
    {
      "cve": "CVE-2026-34079",
      "cwe": {
        "id": "CWE-22",
        "name": "Improper Limitation of a Pathname to a Restricted Directory ('Path Traversal')"
      },
      "notes": [
        {
          "category": "description",
          "text": "Flatpak is a Linux application sandboxing and distribution framework. Prior to 1.16.4, the caching for ld.so removes outdated cache files without properly checking that the app controlled path to the outdated cache is in the cache directory. This allows Flatpak apps  to delete arbitrary files on the host. This vulnerability is fixed in 1.16.4.",
          "title": "Vulnerability description"
        },
        {
          "category": "general",
          "text": "The CVSS score(s) listed for this vulnerability do not reflect the associated product's status, and are included for informational purposes to better understand the severity of this vulnerability.",
          "title": "CVSS score applicability"
        }
      ],
      "product_status": {
        "fixed": [
          "Amazon-Linux-2:flatpak-0:1.0.9-10.amzn2.0.7.tuxcare.els1.x86_64",
          "Amazon-Linux-2:flatpak-builder-0:1.0.0-10.amzn2.0.7.tuxcare.els1.x86_64",
          "Amazon-Linux-2:flatpak-devel-0:1.0.9-10.amzn2.0.7.tuxcare.els1.x86_64",
          "Amazon-Linux-2:flatpak-libs-0:1.0.9-10.amzn2.0.7.tuxcare.els1.x86_64"
        ]
      },
      "references": [
        {
          "category": "self",
          "summary": "Canonical URL",
          "url": "https://cve.tuxcare.com/els/cve/CVE-2026-34079"
        },
        {
          "category": "external",
          "summary": "https://github.com/flatpak/flatpak/security/advisories/GHSA-p29x-r292-46pp",
          "url": "https://github.com/flatpak/flatpak/security/advisories/GHSA-p29x-r292-46pp"
        }
      ],
      "release_date": "2026-04-07T22:16:00Z",
      "remediations": [
        {
          "category": "vendor_fix",
          "date": "2026-05-25T09:17:15.605599Z",
          "details": "Details on how to apply the fix are available at: https://cve.tuxcare.com/els/releases/CLSA-2026:1779700633",
          "product_ids": [
            "Amazon-Linux-2:flatpak-0:1.0.9-10.amzn2.0.7.tuxcare.els1.x86_64",
            "Amazon-Linux-2:flatpak-builder-0:1.0.0-10.amzn2.0.7.tuxcare.els1.x86_64",
            "Amazon-Linux-2:flatpak-devel-0:1.0.9-10.amzn2.0.7.tuxcare.els1.x86_64",
            "Amazon-Linux-2:flatpak-libs-0:1.0.9-10.amzn2.0.7.tuxcare.els1.x86_64"
          ],
          "url": "https://cve.tuxcare.com/els/releases/CLSA-2026:1779700633"
        }
      ],
      "scores": [
        {
          "cvss_v3": {
            "attackComplexity": "LOW",
            "attackVector": "NETWORK",
            "availabilityImpact": "NONE",
            "baseScore": 7.5,
            "baseSeverity": "HIGH",
            "confidentialityImpact": "NONE",
            "integrityImpact": "HIGH",
            "privilegesRequired": "NONE",
            "scope": "UNCHANGED",
            "userInteraction": "NONE",
            "vectorString": "CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:H/A:N",
            "version": "3.1"
          },
          "products": [
            "Amazon-Linux-2:flatpak-0:1.0.9-10.amzn2.0.7.tuxcare.els1.x86_64",
            "Amazon-Linux-2:flatpak-builder-0:1.0.0-10.amzn2.0.7.tuxcare.els1.x86_64",
            "Amazon-Linux-2:flatpak-devel-0:1.0.9-10.amzn2.0.7.tuxcare.els1.x86_64",
            "Amazon-Linux-2:flatpak-libs-0:1.0.9-10.amzn2.0.7.tuxcare.els1.x86_64"
          ]
        }
      ],
      "threats": [
        {
          "category": "impact",
          "details": "Important"
        }
      ]
    }
  ]
}