{
  "affected": [
    {
      "ranges": [
        {
          "events": [
            {
              "introduced": "68a9e3d07947a4f261dd38463fc71dfb86f6f60e"
            },
            {
              "fixed": "f16949b84e24e17a08d7f234741c1f30b3b3e906"
            }
          ],
          "repo": "https://github.com/libp2p/rust-yamux",
          "type": "GIT"
        }
      ]
    }
  ],
  "aliases": [
    "GHSA-4w32-2493-32g7"
  ],
  "database_specific": {
    "cna_assigner": "GitHub_M",
    "cwe_ids": [
      "CWE-190"
    ],
    "osv_generated_from": "https://github.com/CVEProject/cvelistV5/tree/main/cves/2026/31xxx/CVE-2026-31814.json"
  },
  "details": "Yamux is a stream multiplexer over reliable, ordered connections such as TCP/IP. From 0.13.0 to before 0.13.9, a specially crafted WindowUpdate can cause arithmetic overflow in send-window accounting, which triggers a panic in the connection state machine. This is remotely reachable over a normal network connection and does not require authentication. This vulnerability is fixed in 0.13.9.",
  "id": "CVE-2026-31814",
  "modified": "2026-04-01T23:08:59.175754848Z",
  "published": "2026-03-13T19:19:41.879Z",
  "references": [
    {
      "type": "ADVISORY",
      "url": "https://github.com/CVEProject/cvelistV5/tree/main/cves/2026/31xxx/CVE-2026-31814.json"
    },
    {
      "type": "ADVISORY",
      "url": "https://github.com/libp2p/rust-yamux/security/advisories/GHSA-4w32-2493-32g7"
    },
    {
      "type": "ADVISORY",
      "url": "https://nvd.nist.gov/vuln/detail/CVE-2026-31814"
    }
  ],
  "schema_version": "1.7.3",
  "severity": [
    {
      "score": "CVSS:4.0/AV:N/AC:L/AT:N/PR:N/UI:N/VC:N/VI:N/VA:H/SC:N/SI:N/SA:N",
      "type": "CVSS_V4"
    }
  ],
  "summary": "Yamux remote Panic via malformed WindowUpdate credit"
}