{
  "affected": [
    {
      "ranges": [
        {
          "database_specific": {
            "extracted_events": [
              {
                "introduced": "5.0.0"
              },
              {
                "fixed": "5.0.23"
              },
              {
                "introduced": "6.0.0"
              },
              {
                "fixed": "6.0.19"
              },
              {
                "introduced": "7.0.0"
              },
              {
                "fixed": "7.0.19"
              },
              {
                "introduced": "8.0.0"
              },
              {
                "fixed": "8.0.9"
              }
            ],
            "source": "AFFECTED_FIELD"
          },
          "events": [
            {
              "introduced": "cf70b858ed344a941fac8fa8deb6def3327d464f"
            },
            {
              "fixed": "baf656acc36fe00a0c1058ce28213272ac777549"
            },
            {
              "introduced": "129e30f07db92e60fba1d330f08b9607156dcd60"
            },
            {
              "fixed": "d8bef500d01b74b370cfc86e5b07d32ed2baf11e"
            },
            {
              "introduced": "75c9c8e2d5c34c68df8484ad113beb1624bfe3f2"
            },
            {
              "fixed": "52b8fca89b0515b14e421644f5acf92da978f002"
            },
            {
              "introduced": "fe29bbede69bbe8c54c29ffc0a4c3c32ca1b9475"
            },
            {
              "fixed": "7c79c83bc3e57d5f0b57e52b84ac9dcf3869a4aa"
            }
          ],
          "repo": "https://github.com/cometd/cometd",
          "type": "GIT"
        }
      ]
    }
  ],
  "aliases": [
    "GHSA-cqgj-h8vf-4w59"
  ],
  "database_specific": {
    "cna_assigner": "GitHub_M",
    "cwe_ids": [
      "CWE-400"
    ],
    "osv_generated_from": "https://github.com/CVEProject/cvelistV5/tree/main/cves/2025/53xxx/CVE-2025-53114.json"
  },
  "details": "CometD is a scalable comet implementation for web messaging. In versions 5.0.0 through 5.0.22, 6.0.0 through 6.0.18, 7.0.0 through 7.0.18, and 8.0.0 through 8.0.8, bad clients that always send a fixed batch value when the server is using the acknowledgement extension may cause the unacknowledged message queue to grow indefinitely, eventually causing an `OutOfMemoryError`. Versions 5.0.23, 6.0.19, 7.0.19, and 8.0.9 patch the issue. As a workaround, disable the acknowledgement extension.",
  "id": "CVE-2025-53114",
  "modified": "2026-08-12T03:51:20.800088047Z",
  "published": "2026-06-18T16:25:47.388Z",
  "references": [
    {
      "type": "WEB",
      "url": "https://github.com/cometd/cometd/discussions/2116"
    },
    {
      "type": "ADVISORY",
      "url": "https://github.com/CVEProject/cvelistV5/tree/main/cves/2025/53xxx/CVE-2025-53114.json"
    },
    {
      "type": "ADVISORY",
      "url": "https://github.com/cometd/cometd/security/advisories/GHSA-cqgj-h8vf-4w59"
    },
    {
      "type": "ADVISORY",
      "url": "https://nvd.nist.gov/vuln/detail/CVE-2025-53114"
    },
    {
      "type": "REPORT",
      "url": "https://github.com/cometd/cometd/issues/2117"
    },
    {
      "type": "FIX",
      "url": "https://github.com/cometd/cometd/pull/2118"
    },
    {
      "type": "FIX",
      "url": "https://github.com/cometd/cometd/pull/2168"
    },
    {
      "type": "FIX",
      "url": "https://github.com/cometd/cometd/pull/2169"
    }
  ],
  "schema_version": "1.9.0",
  "severity": [
    {
      "score": "CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H",
      "type": "CVSS_V3"
    }
  ],
  "summary": "CometD has acknowledgement extension out of memory"
}