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SurrealDB before 2.2.2 Memory Exhaustion via string::replace

Type: advisorySources: OSV

SurrealDB versions before 2.2.2 contain a memory exhaustion vulnerability in the string::replace function that fails to restrict resulting string length when using regex patterns. An authenticated attacker can craft a malicious query to exhaust server memory through unbounded string allocations, causing denial of service.

Products
Not specified
Affected versions
Not specified
Fixed versions
Not specified
CVEs
CVE-2025-71395
Confirmed fixed CVEs
Not specified
Updated in this feed
5 Nov 2026, 18:18 UTC · Revision 1

Source evidence

SurrealDB before 2.2.2 Memory Exhaustion via string::replace

core-osv · Original source

Published 18 Jul 2026, 13:10 UTC

SurrealDB versions before 2.2.2 contain a memory exhaustion vulnerability in the string::replace function that fails to restrict resulting string length when using regex patterns. An authenticated attacker can craft a malicious query to exhaust server memory through unbounded string allocations, causing denial of service.

osv:CVE-2025-71395
Complete source record
{
  "id": "27e05152dbd6473ac95f93dde3e3f3e20d6735d48d41c751f6e4015371421002",
  "url": "https://osv.dev/vulnerability/CVE-2025-71395",
  "method": "structured",
  "payload": {
    "kind": "advisory",
    "title": "SurrealDB before 2.2.2 Memory Exhaustion via string::replace",
    "summary": "SurrealDB versions before 2.2.2 contain a memory exhaustion vulnerability in the string::replace function that fails to restrict resulting string length when using regex patterns. An authenticated attacker can craft a malicious query to exhaust server memory through unbounded string allocations, causing denial of service.",
    "evidence": "osv:CVE-2025-71395",
    "products": [],
    "severity": "high",
    "structured": {
      "id": "CVE-2025-71395",
      "aliases": [
        "CVE-2025-71395",
        "GHSA-3633-g6mg-p6qq"
      ],
      "metrics": [
        {
          "type": "CVSS_V4",
          "score": "CVSS:4.0/AV:N/AC:L/AT:N/PR:L/UI:N/VC:N/VI:N/VA:H/SC:N/SI:N/SA:N"
        }
      ],
      "affected": [
        {
          "ranges": [
            {
              "repo": "https://github.com/surrealdb/surrealdb",
              "type": "GIT",
              "events": [
                {
                  "introduced": "0"
                },
                {
                  "fixed": "a83e960ee5513a3e39c88f312fabba83f8e15322"
                },
                {
                  "introduced": "3fe28f57517a5d3255cdbb479c815d8021abf92a"
                },
                {
                  "fixed": "b0a15fa3a19ebe2785115c9948dfbde00399adc8"
                },
                {
                  "introduced": "0ee8dc2c3ec8e883038d0ee00bbce6a6126fe655"
                },
                {
                  "fixed": "e25952a66567ef303ad94908d04146e44a068d01"
                }
              ],
              "database_specific": {
                "extracted_events": [
                  {
                    "cpe": "cpe:2.3:a:surrealdb:surrealdb:*:*:*:*:*:*:*:*",
                    "range": [
                      {
                        "introduced": "0"
                      },
                      {
                        "fixed": "2.0.5"
                      }
                    ],
                    "source": "CPE_RANGE"
                  },
                  {
                    "cpe": "cpe:2.3:a:surrealdb:surrealdb:*:*:*:*:*:*:*:*",
                    "range": [
                      {
                        "introduced": "2.1.0"
                      },
                      {
                        "fixed": "2.1.5"
                      }
                    ],
                    "source": "CPE_RANGE"
                  },
                  {
                    "cpe": "cpe:2.3:a:surrealdb:surrealdb:*:*:*:*:*:*:*:*",
                    "range": [
                      {
                        "introduced": "2.2.0"
                      },
                      {
                        "fixed": "2.2.2"
                      }
                    ],
                    "source": "CPE_RANGE"
                  }
                ]
              }
            }
          ],
          "versions": [
            "v2.2.1",
            "v2.1.4",
            "v2.0.4",
            "v2.2.0",
            "v2.1.3",
            "v2.1.2",
            "v2.1.1",
            "v2.1.0",
            "v2.0.3",
            "v2.0.2",
            "v2.0.1",
            "v2.0.0",
            "v2.0.0-beta.3",
            "v2.0.0-beta.2",
            "v2.0.0-beta.1",
            "v2.0.0-alpha.9",
            "v2.0.0-alpha.8",
            "v2.0.0-alpha.7",
            "v2.0.0-alpha.6",
            "v2.0.0-alpha.5",
            "v2.0.0-alpha.4",
            "v2.0.0-alpha.3",
            "v2.0.0-alpha.2",
            "v2.0.0-alpha.1",
            "v1.0.0",
            "v1.0.0-beta.12",
            "v1.0.0-beta.11",
            "v1.0.0-beta.10",
            "v1.0.0-beta.9+20230402",
            "v1.0.0-beta.9",
            "v1.0.0-beta.8",
            "v1.0.0-beta.7",
            "v1.0.0-beta.6",
            "v1.0.0-beta.5",
            "v1.0.0-beta.4",
            "v1.0.0-beta.3",
            "v1.0.0-beta.2",
            "v1.0.0-beta.1",
            "v0.3.0",
            "v0.1.30",
            "v0.1.29",
            "v0.1.28",
            "v0.1.27",
            "v0.1.26",
            "v0.1.25",
            "v0.1.24",
            "v0.1.23",
            "v0.1.22",
            "v0.1.21",
            "v0.1.20",
            "v0.1.19",
            "v0.1.18",
            "v0.1.17",
            "v0.1.16",
            "v0.1.15",
            "v0.1.14",
            "v0.1.13",
            "v0.1.12",
            "v0.1.11",
            "v0.1.10",
            "v0.1.9",
            "v0.1.8",
            "v0.1.7",
            "v0.1.6",
            "v0.1.5",
            "v0.1.4",
            "v0.1.3",
            "v0.1.2",
            "v0.1.1",
            "v0.1.0"
          ],
          "database_specific": {
            "source": "https://storage.googleapis.com/cve-osv-conversion/osv-output/CVE-2025-71395.json"
          }
        }
      ],
      "modified": "2026-10-31T02:30:26.151635913Z",
      "provider": "osv",
      "references": [
        "https://github.com/CVEProject/cvelistV5/tree/main/cves/2025/71xxx/CVE-2025-71395.json",
        "https://github.com/surrealdb/surrealdb/security/advisories/GHSA-3633-g6mg-p6qq",
        "https://nvd.nist.gov/vuln/detail/CVE-2025-71395",
        "https://www.vulncheck.com/advisories/surrealdb-before-memory-exhaustion-via-string-replace"
      ],
      "provider_metadata": {
        "cwe_ids": [
          "CWE-789"
        ],
        "cna_assigner": "VulnCheck",
        "osv_generated_from": "https://github.com/CVEProject/cvelistV5/tree/main/cves/2025/71xxx/CVE-2025-71395.json"
      }
    },
    "related_cves": [
      {
        "value": "CVE-2025-71395",
        "evidence": "/id"
      }
    ],
    "security_relevant": true,
    "severity_evidence": "/severity/0/score"
  },
  "source_id": "core-osv",
  "document_id": 512652,
  "published_at": "2026-07-18T13:10:13.744+00:00"
}