{
  "affected": [
    {
      "ranges": [
        {
          "database_specific": {
            "extracted_events": [
              {
                "introduced": "1.7.14"
              },
              {
                "fixed": "1.7.18"
              }
            ],
            "source": "AFFECTED_FIELD"
          },
          "events": [
            {
              "introduced": "22769b30dd782ca7925b356c18471b7bd70ed437"
            },
            {
              "fixed": "785b77ccb27162506c888cb62657cd7117d23126"
            }
          ],
          "repo": "https://github.com/klever-io/klever-go",
          "type": "GIT"
        }
      ]
    }
  ],
  "aliases": [
    "GHSA-hf2g-6j7h-98wg"
  ],
  "database_specific": {
    "cna_assigner": "GitHub_M",
    "cwe_ids": [
      "CWE-400",
      "CWE-770"
    ],
    "osv_generated_from": "https://github.com/CVEProject/cvelistV5/tree/main/cves/2026/52xxx/CVE-2026-52879.json"
  },
  "details": "Klever-Go is the Go implementation of the Klever blockchain protocol. In versions 1.7.14 through 1.7.17, the direct-message ingress handler spawns a new goroutine for every incoming direct message before the processor-level antiflood layer makes any admission decision, with no semaphore, throttler, or bound on the number of concurrent in-flight spawns. Because the antiflood check runs inside the spawned goroutine rather than before it, a single connected peer can open a direct-send stream and send a stream of well-formed messages to force unbounded goroutine creation, where each goroutine allocates its own stack and holds a message reference until processing completes, adding scheduler and garbage-collection pressure faster than the runtime can drain it. This lets one peer degrade the node's availability and its ability to process legitimate traffic, resulting in a remotely triggerable denial of service. The issue is fixed in 1.7.18.",
  "id": "CVE-2026-52879",
  "modified": "2026-08-09T03:30:23.675760058Z",
  "published": "2026-08-07T22:36:53.980Z",
  "references": [
    {
      "type": "WEB",
      "url": "https://github.com/klever-io/klever-go/releases/tag/v1.7.18"
    },
    {
      "type": "ADVISORY",
      "url": "https://github.com/CVEProject/cvelistV5/tree/main/cves/2026/52xxx/CVE-2026-52879.json"
    },
    {
      "type": "ADVISORY",
      "url": "https://github.com/klever-io/klever-go/security/advisories/GHSA-hf2g-6j7h-98wg"
    },
    {
      "type": "ADVISORY",
      "url": "https://nvd.nist.gov/vuln/detail/CVE-2026-52879"
    }
  ],
  "schema_version": "1.8.0",
  "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": "Klever-Go: Unbounded goroutine spawn on direct-message ingress enables peer-driven DoS"
}