CVE-2026-63762 (GCVE-0-2026-63762)

Vulnerability from cvelistv5 – Published: 2026-07-20 12:04 – Updated: 2026-07-28 01:05
VLAI
Title
SurrealDB before v2.6.1 Denial of Service via scripting
Summary
SurrealDB before v2.6.1 (and before v3.0.0-beta.3) contains a denial of service vulnerability in its embedded JavaScript scripting engine, which is enabled via the --allow-scripting capability (disabled by default). Any user able to execute arbitrary queries — including unauthenticated guests when --allow-guests is enabled — can use built-in string functions to construct a large string and pass it to the JavaScript runtime for compilation, triggering a null pointer dereference in the underlying QuickJS-NG engine. This causes the server process to terminate immediately without graceful shutdown, requiring a manual restart. The issue was fixed by updating the rquickjs dependency from v0.9.0 to v0.11.0.
SSVC
Exploitation: none Automatable: no Technical Impact: partial
CISA Coordinator · CISA-ADP (v2.0.3)
Decision recorded 2026-07-21 15:10 UTC
CWE
  • CWE-476 - NULL Pointer Dereference
References
Impacted products
Vendor Product Version CPE status
surrealdb surrealdb Affected: 0 , < 2.6.1 (semver)
Unaffected: 2.6.1 (semver)
guessed Create a notification for this product.
surrealdb surrealdb Affected: 0 , < 3.0.0-beta.3 (semver)
Unaffected: 3.0.0-beta.3 (semver)
guessed Create a notification for this product.
Date Public
2026-02-12 00:00
Credits
Show details on NVD website

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          "problemTypes": [
            {
              "descriptions": [
                {
                  "cweId": "CWE-476",
                  "description": "NULL Pointer Dereference",
                  "lang": "en",
                  "type": "CWE"
                }
              ]
            }
          ],
          "providerMetadata": {
            "dateUpdated": "2026-07-28T01:05:52.215Z",
            "orgId": "83251b91-4cc7-4094-a5c7-464a1b83ea10",
            "shortName": "VulnCheck"
          },
          "references": [
            {
              "name": "GitHub Security Advisory (GHSA-xx7m-69ff-9crp)",
              "tags": [
                "vendor-advisory"
              ],
              "url": "https://github.com/surrealdb/surrealdb/security/advisories/GHSA-xx7m-69ff-9crp"
            },
            {
              "name": "VulnCheck Advisory: SurrealDB before v2.6.1 Denial of Service via scripting",
              "tags": [
                "third-party-advisory"
              ],
              "url": "https://www.vulncheck.com/advisories/surrealdb-before-denial-of-service-via-scripting"
            }
          ],
          "title": "SurrealDB before v2.6.1 Denial of Service via scripting",
          "x_generator": {
            "engine": "vulncheck-endgame"
          }
        }
      },
      "cveMetadata": {
        "assignerOrgId": "83251b91-4cc7-4094-a5c7-464a1b83ea10",
        "assignerShortName": "VulnCheck",
        "cveId": "CVE-2026-63762",
        "datePublished": "2026-07-20T12:04:51.673Z",
        "dateReserved": "2026-07-18T12:34:08.780Z",
        "dateUpdated": "2026-07-28T01:05:52.215Z",
        "state": "PUBLISHED"
      },
      "dataType": "CVE_RECORD",
      "dataVersion": "5.2"
    }
  }
}



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Forecast uses a logistic model when the trend is rising, or an exponential decay model when the trend is falling. Fitted via linearized least squares.

Sightings

Author Source Type Date Other

Nomenclature

  • Seen: The vulnerability was mentioned, discussed, or observed by the user.
  • Confirmed: The vulnerability has been validated from an analyst's perspective.
  • Published Proof of Concept: A public proof of concept is available for this vulnerability.
  • Exploited: The vulnerability was observed as exploited by the user who reported the sighting.
  • Patched: The vulnerability was observed as successfully patched by the user who reported the sighting.
  • Not exploited: The vulnerability was not observed as exploited by the user who reported the sighting.
  • Not confirmed: The user expressed doubt about the validity of the vulnerability.
  • Not patched: The vulnerability was not observed as successfully patched by the user who reported the sighting.

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Related by attack behaviour

Vulnerabilities whose description is nearest to this one in the vector space of the CIRCL/vulnerability-attack-technique-biencoder model. This is a similarity search over the bi-encoder space (plain cosine), not a classification, and it has no measured accuracy.


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