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          "lang": "en",
          "value": "libp2p is a JavaScript implementation of the libp2p networking stack. Prior to version 4.2.9, the reservation refresh path in reservation-store.ts reuses the same retimeableSignal but unconditionally registers another abort listener on every refresh. As a result, a remote peer can repeatedly send valid RESERVE requests for the same reservation, causing unbounded listener and closure growth in @libp2p/circuit-relay-v2 relay servers and leading to denial of service. This issue is fixed in version 4.2.9."
        }
      ],
      "metrics": [
        {
          "cvssV3_1": {
            "attackComplexity": "LOW",
            "attackVector": "NETWORK",
            "availabilityImpact": "HIGH",
            "baseScore": 7.5,
            "baseSeverity": "HIGH",
            "confidentialityImpact": "NONE",
            "integrityImpact": "NONE",
            "privilegesRequired": "NONE",
            "scope": "UNCHANGED",
            "userInteraction": "NONE",
            "vectorString": "CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H",
            "version": "3.1"
          }
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      ],
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            {
              "cweId": "CWE-400",
              "description": "CWE-400: Uncontrolled Resource Consumption",
              "lang": "en",
              "type": "CWE"
            }
          ]
        },
        {
          "descriptions": [
            {
              "cweId": "CWE-772",
              "description": "CWE-772: Missing Release of Resource after Effective Lifetime",
              "lang": "en",
              "type": "CWE"
            }
          ]
        }
      ],
      "providerMetadata": {
        "dateUpdated": "2026-08-24T21:06:39.909Z",
        "orgId": "a0819718-46f1-4df5-94e2-005712e83aaa",
        "shortName": "GitHub_M"
      },
      "references": [
        {
          "name": "https://github.com/libp2p/js-libp2p/security/advisories/GHSA-x787-gh7p-hmq7",
          "tags": [
            "x_refsource_CONFIRM"
          ],
          "url": "https://github.com/libp2p/js-libp2p/security/advisories/GHSA-x787-gh7p-hmq7"
        },
        {
          "name": "https://github.com/libp2p/js-libp2p/commit/4bb8fbe8d3f3590e4af51a1f5f7de56fffa5804d",
          "tags": [
            "x_refsource_MISC"
          ],
          "url": "https://github.com/libp2p/js-libp2p/commit/4bb8fbe8d3f3590e4af51a1f5f7de56fffa5804d"
        },
        {
          "name": "https://github.com/libp2p/js-libp2p/releases/tag/circuit-relay-v2-v4.2.9",
          "tags": [
            "x_refsource_MISC"
          ],
          "url": "https://github.com/libp2p/js-libp2p/releases/tag/circuit-relay-v2-v4.2.9"
        }
      ],
      "source": {
        "advisory": "GHSA-x787-gh7p-hmq7",
        "discovery": "UNKNOWN"
      },
      "title": "libp2p: Circuit relay v2 server reservation refresh leaks abort listeners and allows remote resource exhaustion"
    }
  },
  "cveMetadata": {
    "assignerOrgId": "a0819718-46f1-4df5-94e2-005712e83aaa",
    "assignerShortName": "GitHub_M",
    "cveId": "CVE-2026-77384",
    "datePublished": "2026-08-24T21:06:39.909Z",
    "dateReserved": "2026-08-20T19:36:13.806Z",
    "dateUpdated": "2026-08-24T21:06:39.909Z",
    "state": "PUBLISHED"
  },
  "dataType": "CVE_RECORD",
  "dataVersion": "5.2",
  "vulnerability-lookup:meta": {
    "nvd": "{\"cve\":{\"id\":\"CVE-2026-77384\",\"sourceIdentifier\":\"security-advisories@github.com\",\"published\":\"2026-08-24T22:17:19.650\",\"lastModified\":\"2026-08-24T22:17:19.650\",\"vulnStatus\":\"Received\",\"cveTags\":[],\"descriptions\":[{\"lang\":\"en\",\"value\":\"libp2p is a JavaScript implementation of the libp2p networking stack. Prior to version 4.2.9, the reservation refresh path in reservation-store.ts reuses the same retimeableSignal but unconditionally registers another abort listener on every refresh. As a result, a remote peer can repeatedly send valid RESERVE requests for the same reservation, causing unbounded listener and closure growth in @libp2p/circuit-relay-v2 relay servers and leading to denial of service. This issue is fixed in version 4.2.9.\"}],\"affected\":[{\"source\":\"security-advisories@github.com\",\"affectedData\":[{\"vendor\":\"libp2p\",\"product\":\"js-libp2p\",\"versions\":[{\"version\":\"\u003e= 2.1.5, \u003c 4.2.9\",\"status\":\"affected\"}]}]}],\"metrics\":{\"cvssMetricV31\":[{\"source\":\"security-advisories@github.com\",\"type\":\"Secondary\",\"cvssData\":{\"version\":\"3.1\",\"vectorString\":\"CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H\",\"baseScore\":7.5,\"baseSeverity\":\"HIGH\",\"attackVector\":\"NETWORK\",\"attackComplexity\":\"LOW\",\"privilegesRequired\":\"NONE\",\"userInteraction\":\"NONE\",\"scope\":\"UNCHANGED\",\"confidentialityImpact\":\"NONE\",\"integrityImpact\":\"NONE\",\"availabilityImpact\":\"HIGH\"},\"exploitabilityScore\":3.9,\"impactScore\":3.6}]},\"weaknesses\":[{\"source\":\"security-advisories@github.com\",\"type\":\"Primary\",\"description\":[{\"lang\":\"en\",\"value\":\"CWE-400\"},{\"lang\":\"en\",\"value\":\"CWE-772\"}]}],\"references\":[{\"url\":\"https://github.com/libp2p/js-libp2p/commit/4bb8fbe8d3f3590e4af51a1f5f7de56fffa5804d\",\"source\":\"security-advisories@github.com\"},{\"url\":\"https://github.com/libp2p/js-libp2p/releases/tag/circuit-relay-v2-v4.2.9\",\"source\":\"security-advisories@github.com\"},{\"url\":\"https://github.com/libp2p/js-libp2p/security/advisories/GHSA-x787-gh7p-hmq7\",\"source\":\"security-advisories@github.com\"}]}}"
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}