usn-8384-1
Vulnerability from osv_ubuntu
Published
2026-06-04 12:29
Modified
2026-06-30 15:55
Summary
apache2 vulnerability
Details

It was discovered that Apache HTTP Server incorrectly handled certain cookie headers in the HTTP/2 implementation. A remote attacker could possibly use this issue to cause Apache HTTP Server to consume excessive resources, resulting in a denial of service.

References
To clipboard 

{
  "affected": [
    {
      "database_specific": {
        "cves_map": {
          "cves": [
            {
              "id": "CVE-2026-49975",
              "severity": [
                {
                  "score": "CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H",
                  "type": "CVSS_V3"
                },
                {
                  "score": "CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H",
                  "type": "CVSS_V3"
                },
                {
                  "score": "medium",
                  "type": "Ubuntu"
                }
              ]
            }
          ],
          "ecosystem": "Ubuntu:22.04:LTS"
        }
      },
      "ecosystem_specific": {
        "availability": "No subscription required",
        "binaries": [
          {
            "binary_name": "apache2",
            "binary_version": "2.4.52-1ubuntu4.21"
          },
          {
            "binary_name": "apache2-bin",
            "binary_version": "2.4.52-1ubuntu4.21"
          },
          {
            "binary_name": "apache2-data",
            "binary_version": "2.4.52-1ubuntu4.21"
          },
          {
            "binary_name": "apache2-suexec-custom",
            "binary_version": "2.4.52-1ubuntu4.21"
          },
          {
            "binary_name": "apache2-suexec-pristine",
            "binary_version": "2.4.52-1ubuntu4.21"
          },
          {
            "binary_name": "apache2-utils",
            "binary_version": "2.4.52-1ubuntu4.21"
          },
          {
            "binary_name": "libapache2-mod-md",
            "binary_version": "2.4.52-1ubuntu4.21"
          },
          {
            "binary_name": "libapache2-mod-proxy-uwsgi",
            "binary_version": "2.4.52-1ubuntu4.21"
          }
        ]
      },
      "package": {
        "ecosystem": "Ubuntu:22.04:LTS",
        "name": "apache2",
        "purl": "pkg:deb/ubuntu/apache2@2.4.52-1ubuntu4.21?arch=source\u0026distro=jammy"
      },
      "ranges": [
        {
          "events": [
            {
              "introduced": "0"
            },
            {
              "fixed": "2.4.52-1ubuntu4.21"
            }
          ],
          "type": "ECOSYSTEM"
        }
      ],
      "versions": [
        "2.4.48-3.1ubuntu3",
        "2.4.48-3.1ubuntu4",
        "2.4.51-2ubuntu1",
        "2.4.52-1ubuntu1",
        "2.4.52-1ubuntu2",
        "2.4.52-1ubuntu4",
        "2.4.52-1ubuntu4.1",
        "2.4.52-1ubuntu4.2",
        "2.4.52-1ubuntu4.3",
        "2.4.52-1ubuntu4.4",
        "2.4.52-1ubuntu4.5",
        "2.4.52-1ubuntu4.6",
        "2.4.52-1ubuntu4.7",
        "2.4.52-1ubuntu4.8",
        "2.4.52-1ubuntu4.9",
        "2.4.52-1ubuntu4.10",
        "2.4.52-1ubuntu4.11",
        "2.4.52-1ubuntu4.12",
        "2.4.52-1ubuntu4.13",
        "2.4.52-1ubuntu4.14",
        "2.4.52-1ubuntu4.15",
        "2.4.52-1ubuntu4.16",
        "2.4.52-1ubuntu4.18",
        "2.4.52-1ubuntu4.19",
        "2.4.52-1ubuntu4.20"
      ]
    },
    {
      "database_specific": {
        "cves_map": {
          "cves": [
            {
              "id": "CVE-2026-49975",
              "severity": [
                {
                  "score": "CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H",
                  "type": "CVSS_V3"
                },
                {
                  "score": "CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H",
                  "type": "CVSS_V3"
                },
                {
                  "score": "medium",
                  "type": "Ubuntu"
                }
              ]
            }
          ],
          "ecosystem": "Ubuntu:24.04:LTS"
        }
      },
      "ecosystem_specific": {
        "availability": "No subscription required",
        "binaries": [
          {
            "binary_name": "apache2",
            "binary_version": "2.4.58-1ubuntu8.13"
          },
          {
            "binary_name": "apache2-bin",
            "binary_version": "2.4.58-1ubuntu8.13"
          },
          {
            "binary_name": "apache2-data",
            "binary_version": "2.4.58-1ubuntu8.13"
          },
          {
            "binary_name": "apache2-suexec-custom",
            "binary_version": "2.4.58-1ubuntu8.13"
          },
          {
            "binary_name": "apache2-suexec-pristine",
            "binary_version": "2.4.58-1ubuntu8.13"
          },
          {
            "binary_name": "apache2-utils",
            "binary_version": "2.4.58-1ubuntu8.13"
          },
          {
            "binary_name": "libapache2-mod-md",
            "binary_version": "2.4.58-1ubuntu8.13"
          },
          {
            "binary_name": "libapache2-mod-proxy-uwsgi",
            "binary_version": "2.4.58-1ubuntu8.13"
          }
        ]
      },
      "package": {
        "ecosystem": "Ubuntu:24.04:LTS",
        "name": "apache2",
        "purl": "pkg:deb/ubuntu/apache2@2.4.58-1ubuntu8.13?arch=source\u0026distro=noble"
      },
      "ranges": [
        {
          "events": [
            {
              "introduced": "0"
            },
            {
              "fixed": "2.4.58-1ubuntu8.13"
            }
          ],
          "type": "ECOSYSTEM"
        }
      ],
      "versions": [
        "2.4.57-2ubuntu2",
        "2.4.57-2ubuntu3",
        "2.4.58-1ubuntu1",
        "2.4.58-1ubuntu2",
        "2.4.58-1ubuntu6",
        "2.4.58-1ubuntu7",
        "2.4.58-1ubuntu8",
        "2.4.58-1ubuntu8.1",
        "2.4.58-1ubuntu8.2",
        "2.4.58-1ubuntu8.3",
        "2.4.58-1ubuntu8.4",
        "2.4.58-1ubuntu8.5",
        "2.4.58-1ubuntu8.6",
        "2.4.58-1ubuntu8.7",
        "2.4.58-1ubuntu8.8",
        "2.4.58-1ubuntu8.10",
        "2.4.58-1ubuntu8.11",
        "2.4.58-1ubuntu8.12"
      ]
    },
    {
      "database_specific": {
        "cves_map": {
          "cves": [
            {
              "id": "CVE-2026-49975",
              "severity": [
                {
                  "score": "CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H",
                  "type": "CVSS_V3"
                },
                {
                  "score": "CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H",
                  "type": "CVSS_V3"
                },
                {
                  "score": "medium",
                  "type": "Ubuntu"
                }
              ]
            }
          ],
          "ecosystem": "Ubuntu:25.10"
        }
      },
      "ecosystem_specific": {
        "availability": "No subscription required",
        "binaries": [
          {
            "binary_name": "apache2",
            "binary_version": "2.4.64-1ubuntu3.5"
          },
          {
            "binary_name": "apache2-bin",
            "binary_version": "2.4.64-1ubuntu3.5"
          },
          {
            "binary_name": "apache2-data",
            "binary_version": "2.4.64-1ubuntu3.5"
          },
          {
            "binary_name": "apache2-suexec-custom",
            "binary_version": "2.4.64-1ubuntu3.5"
          },
          {
            "binary_name": "apache2-suexec-pristine",
            "binary_version": "2.4.64-1ubuntu3.5"
          },
          {
            "binary_name": "apache2-utils",
            "binary_version": "2.4.64-1ubuntu3.5"
          }
        ]
      },
      "package": {
        "ecosystem": "Ubuntu:25.10",
        "name": "apache2",
        "purl": "pkg:deb/ubuntu/apache2@2.4.64-1ubuntu3.5?arch=source\u0026distro=questing"
      },
      "ranges": [
        {
          "events": [
            {
              "introduced": "0"
            },
            {
              "fixed": "2.4.64-1ubuntu3.5"
            }
          ],
          "type": "ECOSYSTEM"
        }
      ],
      "versions": [
        "2.4.63-1ubuntu1",
        "2.4.63-1ubuntu3",
        "2.4.64-1ubuntu2",
        "2.4.64-1ubuntu3",
        "2.4.64-1ubuntu3.2",
        "2.4.64-1ubuntu3.3",
        "2.4.64-1ubuntu3.4"
      ]
    },
    {
      "database_specific": {
        "cves_map": {
          "cves": [
            {
              "id": "CVE-2026-49975",
              "severity": [
                {
                  "score": "CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H",
                  "type": "CVSS_V3"
                },
                {
                  "score": "CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H",
                  "type": "CVSS_V3"
                },
                {
                  "score": "medium",
                  "type": "Ubuntu"
                }
              ]
            }
          ],
          "ecosystem": "Ubuntu:26.04:LTS"
        }
      },
      "ecosystem_specific": {
        "availability": "No subscription required",
        "binaries": [
          {
            "binary_name": "apache2",
            "binary_version": "2.4.66-2ubuntu2.2"
          },
          {
            "binary_name": "apache2-bin",
            "binary_version": "2.4.66-2ubuntu2.2"
          },
          {
            "binary_name": "apache2-data",
            "binary_version": "2.4.66-2ubuntu2.2"
          },
          {
            "binary_name": "apache2-suexec-custom",
            "binary_version": "2.4.66-2ubuntu2.2"
          },
          {
            "binary_name": "apache2-suexec-pristine",
            "binary_version": "2.4.66-2ubuntu2.2"
          },
          {
            "binary_name": "apache2-utils",
            "binary_version": "2.4.66-2ubuntu2.2"
          }
        ]
      },
      "package": {
        "ecosystem": "Ubuntu:26.04:LTS",
        "name": "apache2",
        "purl": "pkg:deb/ubuntu/apache2@2.4.66-2ubuntu2.2?arch=source\u0026distro=resolute"
      },
      "ranges": [
        {
          "events": [
            {
              "introduced": "0"
            },
            {
              "fixed": "2.4.66-2ubuntu2.2"
            }
          ],
          "type": "ECOSYSTEM"
        }
      ],
      "versions": [
        "2.4.64-1ubuntu3",
        "2.4.65-3ubuntu1",
        "2.4.66-2ubuntu1",
        "2.4.66-2ubuntu2",
        "2.4.66-2ubuntu2.1"
      ]
    }
  ],
  "aliases": [],
  "details": "It was discovered that Apache HTTP Server incorrectly handled certain\ncookie headers in the HTTP/2 implementation. A remote attacker could\npossibly use this issue to cause Apache HTTP Server to consume excessive\nresources, resulting in a denial of service.",
  "id": "USN-8384-1",
  "modified": "2026-06-30T15:55:20Z",
  "published": "2026-06-04T12:29:41Z",
  "references": [
    {
      "type": "ADVISORY",
      "url": "https://ubuntu.com/security/notices/USN-8384-1"
    },
    {
      "type": "REPORT",
      "url": "https://ubuntu.com/security/CVE-2026-49975"
    }
  ],
  "related": [],
  "schema_version": "1.7.0",
  "summary": "apache2 vulnerability",
  "upstream": [
    "UBUNTU-CVE-2026-49975"
  ]
}



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Sightings

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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.
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  • Patched: The vulnerability was observed as successfully patched by the user who reported the sighting.
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  • Not patched: The vulnerability was not observed as successfully patched by the user who reported the sighting.


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