Red Hat Security Advisory: Red Hat OpenStack Platform 18.0 (python-h11) security update

{
  "id": "3fb341e2d2e91eb2b682faaece09cffa3885c23a4ec0ebe9f464e2e1069bf705",
  "url": "https://osv.dev/vulnerability/RHSA-2025%3A7535",
  "method": "structured",
  "payload": {
    "kind": "advisory",
    "title": "Red Hat Security Advisory: Red Hat OpenStack Platform 18.0 (python-h11) security update",
    "summary": "Red Hat Security Advisory: Red Hat OpenStack Platform 18.0 (python-h11) security update",
    "evidence": "osv:RHSA-2025:7535",
    "products": [
      {
        "name": {
          "value": "python-h11",
          "evidence": "/affected/0/package/name"
        },
        "prerequisites": [],
        "fixed_versions": [
          {
            "value": "0:0.12.0-4.el9ost",
            "evidence": "/affected/0/ranges"
          }
        ],
        "affected_versions": []
      },
      {
        "name": {
          "value": "python3-h11",
          "evidence": "/affected/1/package/name"
        },
        "prerequisites": [],
        "fixed_versions": [
          {
            "value": "0:0.12.0-4.el9ost",
            "evidence": "/affected/1/ranges"
          }
        ],
        "affected_versions": []
      }
    ],
    "severity": "high",
    "structured": {
      "id": "RHSA-2025:7535",
      "aliases": [
        "RHSA-2025:7535"
      ],
      "metrics": [
        {
          "type": "CVSS_V3",
          "score": "CVSS:3.1/AV:N/AC:H/PR:N/UI:N/S:U/C:H/I:H/A:N"
        }
      ],
      "affected": [
        {
          "ranges": [
            {
              "type": "ECOSYSTEM",
              "events": [
                {
                  "introduced": "0"
                },
                {
                  "fixed": "0:0.12.0-4.el9ost"
                }
              ]
            }
          ],
          "package": {
            "name": "python-h11",
            "purl": "pkg:rpm/redhat/python-h11",
            "ecosystem": "Red Hat:openstack:18.0::el9"
          },
          "database_specific": {
            "source": "https://security.access.redhat.com/data/osv/RHSA-2025:7535.json"
          }
        },
        {
          "ranges": [
            {
              "type": "ECOSYSTEM",
              "events": [
                {
                  "introduced": "0"
                },
                {
                  "fixed": "0:0.12.0-4.el9ost"
                }
              ]
            }
          ],
          "package": {
            "name": "python3-h11",
            "purl": "pkg:rpm/redhat/python3-h11",
            "ecosystem": "Red Hat:openstack:18.0::el9"
          },
          "database_specific": {
            "source": "https://security.access.redhat.com/data/osv/RHSA-2025:7535.json"
          }
        }
      ],
      "modified": "2026-10-16T10:09:18Z",
      "provider": "osv",
      "upstream": [
        "CVE-2025-43859"
      ],
      "references": [
        "https://access.redhat.com/errata/RHSA-2025:7535",
        "https://access.redhat.com/security/updates/classification/#important",
        "https://bugzilla.redhat.com/show_bug.cgi?id=2362162",
        "https://security.access.redhat.com/data/csaf/v2/advisories/2025/rhsa-2025_7535.json",
        "https://access.redhat.com/security/cve/CVE-2025-43859",
        "https://www.cve.org/CVERecord?id=CVE-2025-43859",
        "https://nvd.nist.gov/vuln/detail/CVE-2025-43859",
        "https://github.com/python-hyper/h11/commit/114803a29ce50116dc47951c690ad4892b1a36ed",
        "https://github.com/python-hyper/h11/security/advisories/GHSA-vqfr-h8mv-ghfj"
      ]
    },
    "related_cves": [
      {
        "value": "CVE-2025-43859",
        "evidence": "/upstream"
      }
    ],
    "security_relevant": true,
    "severity_evidence": "/severity/0/score"
  },
  "source_id": "core-osv",
  "document_id": 339352,
  "published_at": "2025-05-14T10:06:53+00:00"
}