a memory leak in ydb-platform/ydb with use of yajl_tree_parse function from src/yail module, which will cause out-of-memory in server and cause crash.

{
  "id": "cc4182a8e53c398ae838c45894f9e1993f86c53f3bac3a7bd04fdd60440d1503",
  "url": "https://osv.dev/vulnerability/CVE-2026-24825",
  "method": "structured",
  "payload": {
    "kind": "advisory",
    "title": "a memory leak in ydb-platform/ydb with use of yajl_tree_parse function from src/yail module, which will cause out-of-memory in server and cause crash.",
    "summary": "Missing Release of Memory after Effective Lifetime vulnerability in ydb-platform ydb (contrib/libs/yajl modules). This vulnerability is associated with program files yail_tree.C. This issue affects ydb: through 24.4.4.2.",
    "evidence": "osv:CVE-2026-24825",
    "products": [],
    "severity": "medium",
    "structured": {
      "id": "CVE-2026-24825",
      "aliases": [
        "CVE-2026-24825"
      ],
      "metrics": [
        {
          "type": "CVSS_V4",
          "score": "CVSS:4.0/AV:N/AC:L/AT:N/PR:N/UI:N/VC:N/VI:N/VA:L/SC:N/SI:N/SA:L/S:N/AU:Y/R:U/V:D/RE:L/U:Amber"
        }
      ],
      "affected": [
        {
          "ranges": [
            {
              "repo": "https://github.com/ydb-platform/ydb",
              "type": "GIT",
              "events": [
                {
                  "introduced": "0"
                },
                {
                  "last_affected": "fd1e65b06629d970ecd292e285fc34861850c950"
                }
              ],
              "database_specific": {
                "extracted_events": [
                  {
                    "range": [
                      {
                        "introduced": "0"
                      },
                      {
                        "last_affected": "24.4.4.2"
                      }
                    ],
                    "source": "AFFECTED_FIELD",
                    "strategy": "StandardRange"
                  },
                  {
                    "range": [
                      {
                        "introduced": "0"
                      },
                      {
                        "last_affected": "24.4.4.2"
                      }
                    ],
                    "source": "DESCRIPTION"
                  }
                ]
              }
            }
          ],
          "versions": [
            "24.4.4.2",
            "24.4.4.1",
            "24.4.4",
            "24.4.3",
            "24.4.2",
            "24.4.1",
            "24.3.15",
            "24.3.14",
            "24.3.13",
            "24.3.12",
            "24.3.11",
            "24.3.10",
            "24.3.9",
            "24.3.8",
            "24.3.7",
            "24.3.6",
            "24.3.5",
            "24.3.4",
            "24.3.3",
            "CLI_2.10.0",
            "CLI_2.9.0",
            "24.1.1",
            "CLI_2.8.0",
            "CLI_2.7.0",
            "CLI_2.6.0",
            "CLI_2.5.0",
            "CLI_2.4.0",
            "CLI_2.3.0",
            "CLI_2.2.0",
            "CLI_2.1.1",
            "CLI_2.1.0",
            "CLI_2.0.1"
          ],
          "database_specific": {
            "source": "https://storage.googleapis.com/cve-osv-conversion/osv-output/CVE-2026-24825.json"
          }
        }
      ],
      "modified": "2026-10-28T02:30:46.204538405Z",
      "provider": "osv",
      "references": [
        "https://github.com/CVEProject/cvelistV5/tree/main/cves/2026/24xxx/CVE-2026-24825.json",
        "https://nvd.nist.gov/vuln/detail/CVE-2026-24825",
        "https://github.com/ydb-platform/ydb/pull/17570",
        "https://github.com/ydb-platform/ydb"
      ],
      "provider_metadata": {
        "cwe_ids": [
          "CWE-401"
        ],
        "cna_assigner": "GovTech CSG",
        "osv_generated_from": "https://github.com/CVEProject/cvelistV5/tree/main/cves/2026/24xxx/CVE-2026-24825.json"
      }
    },
    "related_cves": [
      {
        "value": "CVE-2026-24825",
        "evidence": "/id"
      }
    ],
    "security_relevant": true,
    "severity_evidence": "/severity/0/score"
  },
  "source_id": "core-osv",
  "document_id": 514196,
  "published_at": "2026-01-27T09:02:51.165+00:00"
}