Red Hat Security Advisory: python-tornado security update

{
  "id": "628e9f479602c3607d5f587069ae8f23d37fb14bb28c2559e09cad953f23c4cc",
  "url": "https://osv.dev/vulnerability/RHSA-2026%3A80741",
  "method": "structured",
  "payload": {
    "kind": "advisory",
    "title": "Red Hat Security Advisory: python-tornado security update",
    "summary": "Red Hat Security Advisory: python-tornado security update",
    "evidence": "osv:RHSA-2026:80741",
    "products": [
      {
        "name": {
          "value": "python-tornado",
          "evidence": "/affected/0/package/name"
        },
        "prerequisites": [],
        "fixed_versions": [
          {
            "value": "0:6.5.8-0.el10_0.1",
            "evidence": "/affected/0/ranges"
          }
        ],
        "affected_versions": []
      },
      {
        "name": {
          "value": "python-tornado-debugsource",
          "evidence": "/affected/1/package/name"
        },
        "prerequisites": [],
        "fixed_versions": [
          {
            "value": "0:6.5.8-0.el10_0.1",
            "evidence": "/affected/1/ranges"
          }
        ],
        "affected_versions": []
      },
      {
        "name": {
          "value": "python3-tornado",
          "evidence": "/affected/2/package/name"
        },
        "prerequisites": [],
        "fixed_versions": [
          {
            "value": "0:6.5.8-0.el10_0.1",
            "evidence": "/affected/2/ranges"
          }
        ],
        "affected_versions": []
      },
      {
        "name": {
          "value": "python3-tornado-debuginfo",
          "evidence": "/affected/3/package/name"
        },
        "prerequisites": [],
        "fixed_versions": [
          {
            "value": "0:6.5.8-0.el10_0.1",
            "evidence": "/affected/3/ranges"
          }
        ],
        "affected_versions": []
      }
    ],
    "severity": "high",
    "structured": {
      "id": "RHSA-2026:80741",
      "aliases": [
        "RHSA-2026:80741"
      ],
      "metrics": [
        {
          "type": "CVSS_V3",
          "score": "CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:C/C:H/I:N/A:N"
        }
      ],
      "affected": [
        {
          "ranges": [
            {
              "type": "ECOSYSTEM",
              "events": [
                {
                  "introduced": "0"
                },
                {
                  "fixed": "0:6.5.8-0.el10_0.1"
                }
              ]
            }
          ],
          "package": {
            "name": "python-tornado",
            "purl": "pkg:rpm/redhat/python-tornado",
            "ecosystem": "Red Hat:enterprise_linux_eus:10.0"
          },
          "database_specific": {
            "source": "https://security.access.redhat.com/data/osv/RHSA-2026:80741.json"
          }
        },
        {
          "ranges": [
            {
              "type": "ECOSYSTEM",
              "events": [
                {
                  "introduced": "0"
                },
                {
                  "fixed": "0:6.5.8-0.el10_0.1"
                }
              ]
            }
          ],
          "package": {
            "name": "python-tornado-debugsource",
            "purl": "pkg:rpm/redhat/python-tornado-debugsource",
            "ecosystem": "Red Hat:enterprise_linux_eus:10.0"
          },
          "database_specific": {
            "source": "https://security.access.redhat.com/data/osv/RHSA-2026:80741.json"
          }
        },
        {
          "ranges": [
            {
              "type": "ECOSYSTEM",
              "events": [
                {
                  "introduced": "0"
                },
                {
                  "fixed": "0:6.5.8-0.el10_0.1"
                }
              ]
            }
          ],
          "package": {
            "name": "python3-tornado",
            "purl": "pkg:rpm/redhat/python3-tornado",
            "ecosystem": "Red Hat:enterprise_linux_eus:10.0"
          },
          "database_specific": {
            "source": "https://security.access.redhat.com/data/osv/RHSA-2026:80741.json"
          }
        },
        {
          "ranges": [
            {
              "type": "ECOSYSTEM",
              "events": [
                {
                  "introduced": "0"
                },
                {
                  "fixed": "0:6.5.8-0.el10_0.1"
                }
              ]
            }
          ],
          "package": {
            "name": "python3-tornado-debuginfo",
            "purl": "pkg:rpm/redhat/python3-tornado-debuginfo",
            "ecosystem": "Red Hat:enterprise_linux_eus:10.0"
          },
          "database_specific": {
            "source": "https://security.access.redhat.com/data/osv/RHSA-2026:80741.json"
          }
        }
      ],
      "modified": "2026-10-20T10:16:49Z",
      "provider": "osv",
      "upstream": [
        "CVE-2026-49853",
        "CVE-2026-49855",
        "CVE-2026-91990"
      ],
      "references": [
        "https://access.redhat.com/errata/RHSA-2026:80741",
        "https://access.redhat.com/security/updates/classification/#important",
        "https://bugzilla.redhat.com/show_bug.cgi?id=2500672",
        "https://bugzilla.redhat.com/show_bug.cgi?id=2500686",
        "https://bugzilla.redhat.com/show_bug.cgi?id=2533953",
        "https://security.access.redhat.com/data/csaf/v2/advisories/2026/rhsa-2026_80741.json",
        "https://access.redhat.com/security/cve/CVE-2026-49853",
        "https://www.cve.org/CVERecord?id=CVE-2026-49853",
        "https://nvd.nist.gov/vuln/detail/CVE-2026-49853",
        "https://github.com/tornadoweb/tornado/commit/aba2569f7ed7a6bdbef816658fb6b7182531b751",
        "https://github.com/tornadoweb/tornado/pull/3626",
        "https://github.com/tornadoweb/tornado/releases/tag/v6.5.6",
        "https://github.com/tornadoweb/tornado/security/advisories/GHSA-3x9g-8vmp-wqvf",
        "https://access.redhat.com/security/cve/CVE-2026-49855",
        "https://www.cve.org/CVERecord?id=CVE-2026-49855",
        "https://nvd.nist.gov/vuln/detail/CVE-2026-49855",
        "https://github.com/tornadoweb/tornado/commit/ff808b33adc52d89a549376a5e3628e92abbc8ff",
        "https://github.com/tornadoweb/tornado/security/advisories/GHSA-mgf9-4vpg-hj56",
        "https://access.redhat.com/security/cve/CVE-2026-91990",
        "https://www.cve.org/CVERecord?id=CVE-2026-91990",
        "https://nvd.nist.gov/vuln/detail/CVE-2026-91990",
        "https://github.com/tornadoweb/tornado/security/advisories/GHSA-8423-8fgw-73vq",
        "https://www.vulncheck.com/advisories/tornado-before-6.5.8-memory-amplification-dos-via-multipart"
      ]
    },
    "related_cves": [
      {
        "value": "CVE-2026-49853",
        "evidence": "/upstream"
      },
      {
        "value": "CVE-2026-49855",
        "evidence": "/upstream"
      },
      {
        "value": "CVE-2026-91990",
        "evidence": "/upstream"
      }
    ],
    "security_relevant": true,
    "severity_evidence": "/severity/0/score"
  },
  "source_id": "core-osv",
  "document_id": 378989,
  "published_at": "2026-10-14T10:32:14+00:00"
}