{
  "affected": [
    {
      "ranges": [
        {
          "database_specific": {
            "extracted_events": [
              {
                "introduced": "9.1.0"
              },
              {
                "last_affected": "9.1.0"
              }
            ],
            "source": [
              "AFFECTED_FIELD",
              "REFERENCES"
            ]
          },
          "events": [
            {
              "introduced": "c9e8005e9d0ec817e26c7db318861cb821409249"
            },
            {
              "fixed": "b349fe2821e3998534b1454c1b64a478daf8c6b7"
            }
          ],
          "repo": "https://github.com/valkey-io/valkey",
          "type": "GIT"
        }
      ],
      "versions": [
        "9.1.0"
      ]
    }
  ],
  "database_specific": {
    "cna_assigner": "VulDB",
    "cwe_ids": [
      "CWE-119",
      "CWE-415"
    ],
    "osv_generated_from": "https://github.com/CVEProject/cvelistV5/tree/main/cves/2026/82xxx/CVE-2026-82677.json"
  },
  "details": "A vulnerability was determined in valkey-io valkey 9.1.0. Impacted is the function moduleTimerHandler of the file src/module.c of the component Module Timer Subsystem. This manipulation causes double free. The attack can be initiated remotely. The exploit has been publicly disclosed and may be utilized. Patch name: b349fe2821e3998534b1454c1b64a478daf8c6b7. To fix this issue, it is recommended to deploy a patch.",
  "id": "CVE-2026-82677",
  "modified": "2026-09-02T03:30:57.000305231Z",
  "published": "2026-08-31T10:00:15.053Z",
  "references": [
    {
      "type": "WEB",
      "url": "https://github.com/valkey-io/valkey/"
    },
    {
      "type": "ADVISORY",
      "url": "https://github.com/CVEProject/cvelistV5/tree/main/cves/2026/82xxx/CVE-2026-82677.json"
    },
    {
      "type": "ADVISORY",
      "url": "https://nvd.nist.gov/vuln/detail/CVE-2026-82677"
    },
    {
      "type": "ADVISORY",
      "url": "https://vuldb.com/cve/CVE-2026-82677"
    },
    {
      "type": "ADVISORY",
      "url": "https://vuldb.com/submit/893959"
    },
    {
      "type": "ADVISORY",
      "url": "https://vuldb.com/vuln/397172"
    },
    {
      "type": "REPORT",
      "url": "https://github.com/valkey-io/valkey/issues/4200"
    },
    {
      "type": "REPORT",
      "url": "https://vuldb.com/vuln/397172/cti"
    },
    {
      "type": "FIX",
      "url": "https://github.com/valkey-io/valkey/commit/b349fe2821e3998534b1454c1b64a478daf8c6b7"
    },
    {
      "type": "FIX",
      "url": "https://github.com/valkey-io/valkey/pull/4211"
    },
    {
      "type": "EVIDENCE",
      "url": "https://github.com/user-attachments/files/30118801/PoC.zip"
    }
  ],
  "schema_version": "1.9.0",
  "severity": [
    {
      "score": "CVSS:4.0/AV:N/AC:L/AT:N/PR:H/UI:P/VC:N/VI:N/VA:L/SC:N/SI:N/SA:N/E:P",
      "type": "CVSS_V4"
    }
  ],
  "summary": "valkey-io valkey Module Timer module.c moduleTimerHandler double free"
}