{
  "document": {
    "aggregate_severity": {
      "text": "Critical"
    },
    "category": "csaf_vex",
    "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"
      }
    ],
    "publisher": {
      "category": "vendor",
      "contact_details": "https://tuxcare.com/contact/",
      "name": "TuxCare",
      "namespace": "https://tuxcare.com/"
    },
    "references": [
      {
        "category": "self",
        "summary": "Canonical URL",
        "url": "https://security.tuxcare.com/csaf/v2/els_os/ubuntu16.04els/vex/2022/cve-2022-26635-els_os-ubuntu16_04els.json"
      }
    ],
    "tracking": {
      "current_release_date": "2026-06-13T13:19:14Z",
      "generator": {
        "date": "2026-06-13T13:19:14Z",
        "engine": {
          "name": "pyCSAF"
        }
      },
      "id": "CVE-2022-26635-ELS_OS-UBUNTU16.04ELS",
      "initial_release_date": "2022-04-05T17:15:00Z",
      "revision_history": [
        {
          "date": "2022-04-05T17:15:00Z",
          "number": "1",
          "summary": "Initial version"
        },
        {
          "date": "2025-11-29T18:48:43Z",
          "number": "2",
          "summary": "Official Publication"
        },
        {
          "date": "2025-12-23T22:15:38Z",
          "number": "3",
          "summary": "Update document"
        },
        {
          "date": "2026-06-13T13:19:14Z",
          "number": "4",
          "summary": "Update document"
        }
      ],
      "status": "final",
      "version": "4"
    },
    "title": "Security update on CVE-2022-26635"
  },
  "product_tree": {
    "branches": [
      {
        "branches": [
          {
            "branches": [
              {
                "category": "product_name",
                "name": "Ubuntu 16.04",
                "product": {
                  "name": "Ubuntu 16.04",
                  "product_id": "Ubuntu-16",
                  "product_identification_helper": {
                    "cpe": "cpe:2.3:o:canonical:ubuntu_linux:16.04:*:*:*:lts:*:*:*"
                  }
                }
              }
            ],
            "category": "product_family",
            "name": "Ubuntu"
          }
        ],
        "category": "vendor",
        "name": "Canonical Ltd."
      },
      {
        "branches": [
          {
            "branches": [
              {
                "category": "product_version",
                "name": "memcached-0:1.4.25-2ubuntu1.5+tuxcare.els1.amd64",
                "product": {
                  "name": "memcached-0:1.4.25-2ubuntu1.5+tuxcare.els1.amd64",
                  "product_id": "memcached-0:1.4.25-2ubuntu1.5+tuxcare.els1.amd64",
                  "product_identification_helper": {
                    "purl": "pkg:deb/cloudlinux/memcached@1.4.25-2ubuntu1.5%2Btuxcare.els1?arch=amd64"
                  }
                }
              }
            ],
            "category": "architecture",
            "name": "amd64"
          }
        ],
        "category": "vendor",
        "name": "CloudLinux"
      }
    ],
    "relationships": [
      {
        "category": "default_component_of",
        "full_product_name": {
          "name": "memcached-0:1.4.25-2ubuntu1.5+tuxcare.els1.amd64 as a component of Ubuntu 16.04",
          "product_id": "Ubuntu-16:memcached-0:1.4.25-2ubuntu1.5+tuxcare.els1.amd64"
        },
        "product_reference": "memcached-0:1.4.25-2ubuntu1.5+tuxcare.els1.amd64",
        "relates_to_product_reference": "Ubuntu-16"
      }
    ]
  },
  "vulnerabilities": [
    {
      "cve": "CVE-2022-26635",
      "notes": [
        {
          "category": "description",
          "text": "PHP-Memcached v2.2.0 and below contains an improper NULL termination which allows attackers to execute CLRF injection. Note: Third parties have disputed this as not affecting PHP-Memcached directly.",
          "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"
        },
        {
          "category": "other",
          "text": "TuxCare has assessed that this vulnerability does not impact any currently supported TuxCare products. This evaluation may change as new information becomes available. For additional details regarding this vulnerability and affected products, refer to the provided references.",
          "title": "Statement"
        }
      ],
      "product_status": {
        "known_not_affected": [
          "Ubuntu-16:memcached-0:1.4.25-2ubuntu1.5+tuxcare.els1.amd64"
        ]
      },
      "references": [
        {
          "category": "self",
          "summary": "Canonical URL",
          "url": "https://cve.tuxcare.com/els/cve/CVE-2022-26635"
        },
        {
          "category": "external",
          "summary": "https://github.com/php-memcached-dev/php-memcached/issues/519",
          "url": "https://github.com/php-memcached-dev/php-memcached/issues/519"
        },
        {
          "category": "external",
          "summary": "https://xhzeem.me/posts/Php5-memcached-Injection-Bypass/read/",
          "url": "https://xhzeem.me/posts/Php5-memcached-Injection-Bypass/read/"
        }
      ],
      "release_date": "2022-04-05T17:15:00Z",
      "scores": [
        {
          "cvss_v2": {
            "accessComplexity": "LOW",
            "accessVector": "NETWORK",
            "authentication": "NONE",
            "availabilityImpact": "PARTIAL",
            "baseScore": 7.5,
            "baseSeverity": "HIGH",
            "confidentialityImpact": "PARTIAL",
            "integrityImpact": "PARTIAL",
            "vectorString": "AV:N/AC:L/Au:N/C:P/I:P/A:P",
            "version": "2.0"
          },
          "cvss_v3": {
            "attackComplexity": "LOW",
            "attackVector": "NETWORK",
            "availabilityImpact": "HIGH",
            "baseScore": 9.8,
            "baseSeverity": "CRITICAL",
            "confidentialityImpact": "HIGH",
            "integrityImpact": "HIGH",
            "privilegesRequired": "NONE",
            "scope": "UNCHANGED",
            "userInteraction": "NONE",
            "vectorString": "CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H",
            "version": "3.1"
          },
          "products": [
            "Ubuntu-16:memcached-0:1.4.25-2ubuntu1.5+tuxcare.els1.amd64"
          ]
        }
      ],
      "threats": [
        {
          "category": "impact",
          "details": "Critical"
        },
        {
          "category": "impact",
          "date": "2026-06-12T13:01:22.885307Z",
          "details": "CVE-2022-26635 targets the PHP-Memcached (PECL) client extension (versions ≤2.2.0) and has been disputed as not affecting that project directly; it does not apply to the Memcached server daemon. The environment in scope uses Memcached 1.4.25 (the server component), which does not include or execute the PHP-Memcached client code, so the vulnerable code path is absent.",
          "product_ids": [
            "Ubuntu-16:memcached-0:1.4.25-2ubuntu1.5+tuxcare.els1.amd64"
          ]
        }
      ]
    }
  ]
}