{
  "containers": {
    "cna": {
      "affected": [
        {
          "product": "MongoDB",
          "vendor": "unknown",
          "versions": [
            {
              "status": "affected",
              "version": "unknown"
            }
          ]
        }
      ],
      "credits": [
        {
          "lang": "en",
          "type": "finder",
          "value": "Ron E"
        }
      ],
      "descriptions": [
        {
          "lang": "en",
          "value": "This integer underflow vulnerability enables heap metadata corruption and\ninformation disclosure through carefully crafted LMDB dump files.\n\n*Impact:*\n\n   - *Denial of Service*: Immediate crash (confirmed)\n   - *Information Disclosure*: Heap metadata leak via OOB read\n\nRoot Cause:The readline() function fails to validate that the input line\nlength is non-zero before performing decrement operations, causing integer\nunderflow. An attacker can craft a malicious LMDB dump file containing\nempty lines that trigger the vulnerability when processed by mdb_load:\n*Output:*\n\n./mdb_load -T /tmp/lmdb_asan \u003c\n/root/wiredtiger/third_party/openldap_liblmdb/findings/default/crashes/id:000007,sig:06,src:000012+000030,time:43032,execs:522id:000007,sig:06,src:000012+000030,time:43032,execs:52230,op:splice,rep:13\nmdb_load.c:214:9: runtime error: addition of unsigned offset to\n0x521000000100 overflowed to 0x5210000000ff\nSUMMARY: UndefinedBehaviorSanitizer: undefined-behavior mdb_load.c:214:9\n_______________________________________________\nSent through the Full Disclosure mailing list\nhttps://nmap.org/mailman/listinfo/fulldisclosure\nWeb Archives \u0026 RSS: https://seclists.org/fulldisclosure/"
        }
      ],
      "providerMetadata": {
        "dateUpdated": "2026-09-09T13:42:56Z",
        "orgId": "4e2abfbf-4a2a-4b76-a4e0-d77c18ba156c",
        "shortName": "VULNARCHIVE"
      },
      "references": [
        {
          "tags": [
            "technical-description"
          ],
          "url": "https://vuln.freearchive.org/archive/full-disclosure/2026/Jan/8"
        },
        {
          "tags": [
            "technical-description"
          ],
          "url": "https://seclists.org/fulldisclosure/2026/Jan/8"
        },
        {
          "url": "https://nmap.org/mailman/listinfo/fulldisclosure"
        },
        {
          "url": "https://seclists.org/fulldisclosure/"
        }
      ],
      "source": {
        "defect": [
          "https://seclists.org/fulldisclosure/2026/Jan/8"
        ],
        "discovery": "EXTERNAL"
      },
      "title": "MongoDB v8.3.0 Integer Underflow in LMDB mdb_load",
      "x_gcve": [
        {
          "recordType": "advisory",
          "relationships": [],
          "vulnId": "GCVE-1988-2026-0318",
          "x_vulnarchive": {
            "archiveUrl": "https://vuln.freearchive.org/archive/full-disclosure/2026/Jan/8",
            "automated": true,
            "contentSha256": "f6ee6532880b5db59db360c75f13190709bcbbdb9839409a725973fc38fef448",
            "evidenceScore": 7,
            "messageId": "",
            "originalUrl": "https://seclists.org/fulldisclosure/2026/Jan/8",
            "policy": "vulnarchive-1",
            "sourceFormat": "text/html",
            "sourcePublishedAt": "2026-01-01T04:17:45Z"
          }
        }
      ]
    }
  },
  "cveMetadata": {
    "assignerOrgId": "4e2abfbf-4a2a-4b76-a4e0-d77c18ba156c",
    "assignerShortName": "VULNARCHIVE",
    "datePublished": "2026-09-09T13:42:56Z",
    "dateUpdated": "2026-09-09T13:42:56Z",
    "state": "PUBLISHED",
    "vulnId": "GCVE-1988-2026-0318"
  },
  "dataType": "CVE_RECORD",
  "dataVersion": "5.2"
}