HTTP/2 servers could end up crashing due to inadvertently modifying its HPACK encoder concurrently

{
  "id": "64a0d4c7f514b0fb27285ba43643add50dc01b4433c0dc3a22fdcf7544c5c749",
  "url": "https://osv.dev/vulnerability/CLEANSTART-2026-HB55333",
  "method": "structured",
  "payload": {
    "kind": "advisory",
    "title": "HTTP/2 servers could end up crashing due to inadvertently modifying its HPACK encoder concurrently",
    "summary": "CVE-2026-97032 affects multiple packages. HTTP/2 servers could end up crashing due to inadvertently modifying its HPACK encoder concurrently. See references for individual vulnerability details.",
    "evidence": "osv:CLEANSTART-2026-HB55333",
    "products": [
      {
        "name": {
          "value": "vault",
          "evidence": "/affected/0/package/name"
        },
        "prerequisites": [],
        "fixed_versions": [
          {
            "value": "2.0.4-r7",
            "evidence": "/affected/0/ranges"
          }
        ],
        "affected_versions": []
      },
      {
        "name": {
          "value": "vault",
          "evidence": "/affected/1/package/name"
        },
        "prerequisites": [],
        "fixed_versions": [
          {
            "value": "2.0.4-r7",
            "evidence": "/affected/1/ranges"
          }
        ],
        "affected_versions": []
      },
      {
        "name": {
          "value": "ollama-cuda",
          "evidence": "/affected/2/package/name"
        },
        "prerequisites": [],
        "fixed_versions": [
          {
            "value": "0.33.3-r2",
            "evidence": "/affected/2/ranges"
          }
        ],
        "affected_versions": []
      },
      {
        "name": {
          "value": "ollama-cuda",
          "evidence": "/affected/3/package/name"
        },
        "prerequisites": [],
        "fixed_versions": [
          {
            "value": "0.33.3-r2",
            "evidence": "/affected/3/ranges"
          }
        ],
        "affected_versions": []
      }
    ],
    "severity": "unknown",
    "structured": {
      "id": "CLEANSTART-2026-HB55333",
      "aliases": [
        "CLEANSTART-2026-HB55333"
      ],
      "affected": [
        {
          "ranges": [
            {
              "type": "ECOSYSTEM",
              "events": [
                {
                  "introduced": "0"
                },
                {
                  "fixed": "2.0.4-r7"
                }
              ]
            }
          ],
          "package": {
            "name": "vault",
            "purl": "pkg:apk/cleanstart/vault?arch=aarch64",
            "ecosystem": "CleanStart"
          },
          "database_specific": {
            "source": "https://github.com/cleanstart-dev/cleanstart-security-advisories/blob/main/advisories/2026/CLEANSTART-2026-HB55333.json"
          }
        },
        {
          "ranges": [
            {
              "type": "ECOSYSTEM",
              "events": [
                {
                  "introduced": "0"
                },
                {
                  "fixed": "2.0.4-r7"
                }
              ]
            }
          ],
          "package": {
            "name": "vault",
            "purl": "pkg:apk/cleanstart/vault?arch=x86_64",
            "ecosystem": "CleanStart"
          },
          "database_specific": {
            "source": "https://github.com/cleanstart-dev/cleanstart-security-advisories/blob/main/advisories/2026/CLEANSTART-2026-HB55333.json"
          }
        },
        {
          "ranges": [
            {
              "type": "ECOSYSTEM",
              "events": [
                {
                  "introduced": "0"
                },
                {
                  "fixed": "0.33.3-r2"
                }
              ]
            }
          ],
          "package": {
            "name": "ollama-cuda",
            "purl": "pkg:apk/cleanstart/ollama-cuda?arch=x86_64",
            "ecosystem": "CleanStart"
          },
          "database_specific": {
            "source": "https://github.com/cleanstart-dev/cleanstart-security-advisories/blob/main/advisories/2026/CLEANSTART-2026-HB55333.json"
          }
        },
        {
          "ranges": [
            {
              "type": "ECOSYSTEM",
              "events": [
                {
                  "introduced": "0"
                },
                {
                  "fixed": "0.33.3-r2"
                }
              ]
            }
          ],
          "package": {
            "name": "ollama-cuda",
            "purl": "pkg:apk/cleanstart/ollama-cuda?arch=aarch64",
            "ecosystem": "CleanStart"
          },
          "database_specific": {
            "source": "https://github.com/cleanstart-dev/cleanstart-security-advisories/blob/main/advisories/2026/CLEANSTART-2026-HB55333.json"
          }
        }
      ],
      "modified": "2026-10-28T00:45:06.660885014Z",
      "provider": "osv",
      "upstream": [
        "CVE-2026-97032"
      ],
      "references": [
        "https://github.com/cleanstart-dev/cleanstart-security-advisories/tree/main/advisories/2026/CLEANSTART-2026-HB55333.json",
        "https://osv.dev/vulnerability/CVE-2026-97032",
        "https://nvd.nist.gov/vuln/detail/CVE-2026-97032"
      ],
      "provider_metadata": {}
    },
    "related_cves": [
      {
        "value": "CVE-2026-97032",
        "evidence": "/upstream"
      }
    ],
    "security_relevant": true,
    "severity_evidence": null
  },
  "source_id": "core-osv",
  "document_id": 486166,
  "published_at": "2026-10-28T00:38:19.12912+00:00"
}