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jetty9 — security advisory

Type: advisorySources: OSVAdvisory ID: DEBIAN-CVE-2020-27223

In Eclipse Jetty 9.4.6.v20170531 to 9.4.36.v20210114 (inclusive), 10.0.0, and 11.0.0 when Jetty handles a request containing multiple Accept headers with a large number of “quality” (i.e. q) parameters, the server may enter a denial of service (DoS) state due to high CPU usage processing those quality values, resulting in minutes of CPU time exhausted processing those quality values.

Products
jetty9
Affected versions
Not specified
Fixed versions
9.4.38-1
CVEs
CVE-2020-27223
Confirmed fixed CVEs
Not specified
Updated in this feed
1 Nov 2026, 13:45 UTC · Revision 1

Source evidence

DEBIAN-CVE-2020-27223

core-osv · Original source

Published 26 Feb 2021, 22:15 UTC

In Eclipse Jetty 9.4.6.v20170531 to 9.4.36.v20210114 (inclusive), 10.0.0, and 11.0.0 when Jetty handles a request containing multiple Accept headers with a large number of “quality” (i.e. q) parameters, the server may enter a denial of service (DoS) state due to high CPU usage processing those quality values, resulting in minutes of CPU time exhausted processing those quality values.

osv:DEBIAN-CVE-2020-27223

jetty9

Fixed versions: 9.4.38-1

jetty9

Fixed versions: 9.4.38-1

jetty9

Fixed versions: 9.4.38-1

Complete source record
{
  "id": "4602d206da470344a38723c9bbd16f227ec255901db758bdabc732ab0d53dcf1",
  "url": "https://osv.dev/vulnerability/DEBIAN-CVE-2020-27223",
  "method": "structured",
  "payload": {
    "kind": "advisory",
    "title": "DEBIAN-CVE-2020-27223",
    "summary": "In Eclipse Jetty 9.4.6.v20170531 to 9.4.36.v20210114 (inclusive), 10.0.0, and 11.0.0 when Jetty handles a request containing multiple Accept headers with a large number of “quality” (i.e. q) parameters, the server may enter a denial of service (DoS) state due to high CPU usage processing those quality values, resulting in minutes of CPU time exhausted processing those quality values.",
    "evidence": "osv:DEBIAN-CVE-2020-27223",
    "products": [
      {
        "name": {
          "value": "jetty9",
          "evidence": "/affected/0/package/name"
        },
        "prerequisites": [],
        "fixed_versions": [
          {
            "value": "9.4.38-1",
            "evidence": "/affected/0/ranges"
          }
        ],
        "affected_versions": []
      },
      {
        "name": {
          "value": "jetty9",
          "evidence": "/affected/1/package/name"
        },
        "prerequisites": [],
        "fixed_versions": [
          {
            "value": "9.4.38-1",
            "evidence": "/affected/1/ranges"
          }
        ],
        "affected_versions": []
      },
      {
        "name": {
          "value": "jetty9",
          "evidence": "/affected/2/package/name"
        },
        "prerequisites": [],
        "fixed_versions": [
          {
            "value": "9.4.38-1",
            "evidence": "/affected/2/ranges"
          }
        ],
        "affected_versions": []
      }
    ],
    "severity": "medium",
    "structured": {
      "id": "DEBIAN-CVE-2020-27223",
      "aliases": [
        "DEBIAN-CVE-2020-27223"
      ],
      "metrics": [
        {
          "type": "CVSS_V3",
          "score": "CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:L"
        }
      ],
      "affected": [
        {
          "ranges": [
            {
              "type": "ECOSYSTEM",
              "events": [
                {
                  "introduced": "0"
                },
                {
                  "fixed": "9.4.38-1"
                }
              ]
            }
          ],
          "package": {
            "name": "jetty9",
            "purl": "pkg:deb/debian/jetty9?arch=source&distro=bookworm",
            "ecosystem": "Debian:12"
          },
          "database_specific": {
            "source": "https://storage.googleapis.com/debian-osv/debian-cve-osv/DEBIAN-CVE-2020-27223.json"
          },
          "ecosystem_specific": {
            "urgency": "not yet assigned"
          }
        },
        {
          "ranges": [
            {
              "type": "ECOSYSTEM",
              "events": [
                {
                  "introduced": "0"
                },
                {
                  "fixed": "9.4.38-1"
                }
              ]
            }
          ],
          "package": {
            "name": "jetty9",
            "purl": "pkg:deb/debian/jetty9?arch=source&distro=trixie",
            "ecosystem": "Debian:13"
          },
          "database_specific": {
            "source": "https://storage.googleapis.com/debian-osv/debian-cve-osv/DEBIAN-CVE-2020-27223.json"
          },
          "ecosystem_specific": {
            "urgency": "not yet assigned"
          }
        },
        {
          "ranges": [
            {
              "type": "ECOSYSTEM",
              "events": [
                {
                  "introduced": "0"
                },
                {
                  "fixed": "9.4.38-1"
                }
              ]
            }
          ],
          "package": {
            "name": "jetty9",
            "purl": "pkg:deb/debian/jetty9?arch=source&distro=forky",
            "ecosystem": "Debian:14"
          },
          "database_specific": {
            "source": "https://storage.googleapis.com/debian-osv/debian-cve-osv/DEBIAN-CVE-2020-27223.json"
          },
          "ecosystem_specific": {
            "urgency": "not yet assigned"
          }
        }
      ],
      "modified": "2026-10-26T12:02:41.653878027Z",
      "provider": "osv",
      "upstream": [
        "CVE-2020-27223"
      ],
      "references": [
        "https://security-tracker.debian.org/tracker/CVE-2020-27223"
      ]
    },
    "related_cves": [
      {
        "value": "CVE-2020-27223",
        "evidence": "/upstream"
      }
    ],
    "security_relevant": true,
    "severity_evidence": "/severity/0/score"
  },
  "source_id": "core-osv",
  "document_id": 452780,
  "published_at": "2021-02-26T22:15:19.317+00:00"
}