{
  "affected": [
    {
      "ranges": [
        {
          "database_specific": {
            "extracted_events": [
              {
                "introduced": "0"
              },
              {
                "fixed": "v2025.08.18.00"
              }
            ],
            "source": [
              "DESCRIPTION",
              "REFERENCES"
            ]
          },
          "events": [
            {
              "introduced": "0"
            },
            {
              "fixed": "57838dc9bbfd17156d482efb83a16ee71612051e"
            },
            {
              "fixed": "479eb5574195764e80e6cedebef669f6baa85083"
            }
          ],
          "repo": "https://github.com/facebook/proxygen",
          "type": "GIT"
        }
      ]
    }
  ],
  "database_specific": {},
  "details": "In proxygen from v2024.10.28.00 until v2026.09.28.00, WebTransportImpl::terminateSessionStreams (WebTransportImpl::destroy in releases before v2025.08.18.00) failed to unregister read callbacks for streams that were no longer open before destroying them. The transport could then invoke a read callback that had been freed.",
  "id": "CVE-2026-91096",
  "modified": "2026-09-30T03:30:47.422365615Z",
  "published": "2026-09-28T21:17:19.313Z",
  "references": [
    {
      "type": "ADVISORY",
      "url": "https://www.facebook.com/security/advisories/cve-2026-91096"
    },
    {
      "type": "FIX",
      "url": "https://github.com/facebook/proxygen/commit/479eb5574195764e80e6cedebef669f6baa85083"
    }
  ]
}