Vulnerability-Lookup

CVE-2026-63733 (GCVE-0-2026-63733)

Vulnerability from cvelistv5 – Published: 2026-07-20 12:04 – Updated: 2026-07-28 01:05

Title

SurrealDB before 3.2.0 Permissions Bypass via PERMISSIONS Clause

Summary

SurrealDB versions before 3.2.0 contain a permissions bypass vulnerability where data-modifying statements within PERMISSIONS clauses execute with enforcement disabled. Attackers with permission to perform a guarded operation can write to tables they lack permission for by embedding CREATE, UPDATE, DELETE, or UPSERT statements in the PERMISSIONS clause, causing unintended writes and data corruption.

Severity

5.3 (Medium)


                        
                          CVSS:4.0/AV:N/AC:L/AT:N/PR:L/UI:N/VC:N/VI:L/VA:N/SC:N/SI:N/SA:N

4.3 (Medium)


                        
                          CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:U/C:N/I:L/A:N

SSVC

Exploitation: none Automatable: no Technical Impact: partial

CISA Coordinator · CISA-ADP (v2.0.3)

Decision recorded 2026-07-20 16:08 UTC

CWE

CWE-863 - Incorrect Authorization

Assigner

VulnCheck mitre root

References

2 references

URL	Tags
https://github.com/surrealdb/surrealdb/security/a…	vendor-advisory
https://www.vulncheck.com/advisories/surrealdb-be…	third-party-advisory

Impacted products

1 product

Vendor	Product	Version	CPE status
surrealdb	surrealdb	Affected: 0 , < 3.2.0 (semver) Unaffected: 3.2.0 (semver) cpe:2.3:a:surrealdb:surrealdb::::::::

Date Public

2026-07-02 00:00

Credits

sondt99

Show details on NVD website

JSON

To clipboard

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FKIE_CVE-2026-63733

Vulnerability from fkie_nvd - Published: 2026-07-20 12:19 - Updated: 2026-07-22 15:53

Severity

4.3 (Medium) - CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:U/C:N/I:L/A:N
6.5 (Medium) - CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:U/C:N/I:H/A:N

Summary

References

	URL	Tags
	disclosure@vulncheck.com	https://github.com/surrealdb/surrealdb/security/advisories/GHSA-66r2-5gwj-gxm2	Vendor Advisory, Mitigation
	disclosure@vulncheck.com	https://www.vulncheck.com/advisories/surrealdb-before-permissions-bypass-via-permissions-clause	Third Party Advisory

Impacted products

	Vendor	Product	Version
	surrealdb	surrealdb	*

JSON

To clipboard

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          "vectorString": "CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:U/C:N/I:H/A:N",
          "version": "3.1"
        },
        "exploitabilityScore": 2.8,
        "impactScore": 3.6,
        "source": "nvd@nist.gov",
        "type": "Primary"
      }
    ],
    "cvssMetricV40": [
      {
        "cvssData": {
          "Automatable": "NOT_DEFINED",
          "Recovery": "NOT_DEFINED",
          "Safety": "NOT_DEFINED",
          "attackComplexity": "LOW",
          "attackRequirements": "NONE",
          "attackVector": "NETWORK",
          "availabilityRequirement": "NOT_DEFINED",
          "baseScore": 5.3,
          "baseSeverity": "MEDIUM",
          "confidentialityRequirement": "NOT_DEFINED",
          "exploitMaturity": "NOT_DEFINED",
          "integrityRequirement": "NOT_DEFINED",
          "modifiedAttackComplexity": "NOT_DEFINED",
          "modifiedAttackRequirements": "NOT_DEFINED",
          "modifiedAttackVector": "NOT_DEFINED",
          "modifiedPrivilegesRequired": "NOT_DEFINED",
          "modifiedSubAvailabilityImpact": "NOT_DEFINED",
          "modifiedSubConfidentialityImpact": "NOT_DEFINED",
          "modifiedSubIntegrityImpact": "NOT_DEFINED",
          "modifiedUserInteraction": "NOT_DEFINED",
          "modifiedVulnAvailabilityImpact": "NOT_DEFINED",
          "modifiedVulnConfidentialityImpact": "NOT_DEFINED",
          "modifiedVulnIntegrityImpact": "NOT_DEFINED",
          "privilegesRequired": "LOW",
          "providerUrgency": "NOT_DEFINED",
          "subAvailabilityImpact": "NONE",
          "subConfidentialityImpact": "NONE",
          "subIntegrityImpact": "NONE",
          "userInteraction": "NONE",
          "valueDensity": "NOT_DEFINED",
          "vectorString": "CVSS:4.0/AV:N/AC:L/AT:N/PR:L/UI:N/VC:N/VI:L/VA:N/SC:N/SI:N/SA:N/E:X/CR:X/IR:X/AR:X/MAV:X/MAC:X/MAT:X/MPR:X/MUI:X/MVC:X/MVI:X/MVA:X/MSC:X/MSI:X/MSA:X/S:X/AU:X/R:X/V:X/RE:X/U:X",
          "version": "4.0",
          "vulnAvailabilityImpact": "NONE",
          "vulnConfidentialityImpact": "NONE",
          "vulnIntegrityImpact": "LOW",
          "vulnerabilityResponseEffort": "NOT_DEFINED"
        },
        "source": "disclosure@vulncheck.com",
        "type": "Secondary"
      }
    ],
    "ssvcV203": [
      {
        "source": "134c704f-9b21-4f2e-91b3-4a467353bcc0",
        "ssvcData": {
          "id": "CVE-2026-63733",
          "options": [
            {
              "exploitation": "none"
            },
            {
              "automatable": "no"
            },
            {
              "technicalImpact": "partial"
            }
          ],
          "role": "CISA Coordinator",
          "timestamp": "2026-07-20T16:08:58.958087Z",
          "version": "2.0.3"
        }
      }
    ]
  },
  "published": "2026-07-20T12:19:42.243",
  "references": [
    {
      "source": "disclosure@vulncheck.com",
      "tags": [
        "Vendor Advisory",
        "Mitigation"
      ],
      "url": "https://github.com/surrealdb/surrealdb/security/advisories/GHSA-66r2-5gwj-gxm2"
    },
    {
      "source": "disclosure@vulncheck.com",
      "tags": [
        "Third Party Advisory"
      ],
      "url": "https://www.vulncheck.com/advisories/surrealdb-before-permissions-bypass-via-permissions-clause"
    }
  ],
  "sourceIdentifier": "disclosure@vulncheck.com",
  "vulnStatus": "Analyzed",
  "weaknesses": [
    {
      "description": [
        {
          "lang": "en",
          "value": "CWE-863"
        }
      ],
      "source": "disclosure@vulncheck.com",
      "type": "Secondary"
    }
  ]
}

GHSA-66R2-5GWJ-GXM2

Vulnerability from github – Published: 2026-09-04 20:50 – Updated: 2026-09-04 20:50

Summary

SurrealDB: Writes in a PERMISSIONS clause bypass table permissions

Details

A PERMISSIONS ... WHERE clause is evaluated with permission enforcement disabled, so it can't recurse into its own checks. But the clause could also contain data-modifying statements, and these ran with enforcement still off — so evaluating a permission check could write to tables the caller cannot write.

For example:

DEFINE TABLE post PERMISSIONS FOR update
    WHERE (CREATE log SET at = time::now()) OR true;

Any user allowed to update a post now also creates a log record, even with no permission on log. The clause is evaluated once per matched record, so one statement can cause several writes.

Impact

Only databases with a PERMISSIONS clause that contains a write are affected; FULL, NONE, and read-only clauses are not.

What an attacker can do:

With permission to perform the guarded operation (a low-privileged or record user is enough), write to tables in their own database that their permissions would otherwise forbid, by triggering an operation the clause guards.
Cause several writes from a single statement — the clause is evaluated once per matched record.
Trigger unintended events, cascades, or data corruption on those tables.

What it can't do:

Escape the caller's own namespace and database — a permission clause cannot switch namespace or database.
Perform root- or namespace-level actions such as creating users; the caller's role still applies.
Read hidden data — this is an integrity issue, not disclosure.

Patches

Permission clauses must now be read-only: defining or importing one that contains a write is rejected, and any write attempted while a clause is evaluated is blocked at runtime, including writes reached through a called function. Read-only clauses are unaffected.

Versions 3.2.0 and later are not affected by this issue.

Workarounds

Users unable to patch should consider the following workarounds:

Review your PERMISSIONS clauses and remove any containing CREATE, UPDATE, DELETE, RELATE, INSERT, or UPSERT.
Limit who can define schema and vet imported data — such a clause must be defined before it can be triggered.

Resources

DEFINE TABLE … PERMISSIONS
DEFINE FIELD
fix(core): reject writes in PERMISSIONS clauses and block writes during permission evaluation (included in SurrealDB 3.2.0)

Acknowledgements

Thank you to sondt99 for reporting this issue.

Severity

4.3 (Medium)


                  
                    CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:U/C:N/I:L/A:N

Show details on source website

JSON

To clipboard

{
  "affected": [
    {
      "package": {
        "ecosystem": "crates.io",
        "name": "surrealdb-core"
      },
      "ranges": [
        {
          "events": [
            {
              "introduced": "0"
            },
            {
              "fixed": "3.2.0"
            }
          ],
          "type": "ECOSYSTEM"
        }
      ]
    }
  ],
  "aliases": [
    "CVE-2026-63733"
  ],
  "database_specific": {
    "cwe_ids": [
      "CWE-863"
    ],
    "github_reviewed": true,
    "github_reviewed_at": "2026-09-04T20:50:40Z",
    "nvd_published_at": null,
    "severity": "MODERATE"
  },
  "details": "A `PERMISSIONS ... WHERE` clause is evaluated with permission enforcement disabled, so it can\u0027t recurse into its own checks. But the clause could also contain data-modifying statements, and these ran with enforcement still off \u2014 so evaluating a permission check could write to tables the caller cannot write.\n\nFor example:\n\n```surql\nDEFINE TABLE post PERMISSIONS FOR update\n    WHERE (CREATE log SET at = time::now()) OR true;\n```\n\nAny user allowed to update a `post` now also creates a `log` record, even with no permission on `log`. The clause is evaluated once per matched record, so one statement can cause several writes.\n\n### Impact\n\nOnly databases with a `PERMISSIONS` clause that contains a write are affected; `FULL`, `NONE`, and read-only clauses are not.\n\nWhat an attacker **can** do:\n\n- With permission to perform the guarded operation (a low-privileged or record user is enough), write to tables in their own database that their permissions would otherwise forbid, by triggering an operation the clause guards.\n- Cause several writes from a single statement \u2014 the clause is evaluated once per matched record.\n- Trigger unintended events, cascades, or data corruption on those tables.\n\nWhat it **can\u0027t** do:\n\n- Escape the caller\u0027s own namespace and database \u2014 a permission clause cannot switch namespace or database.\n- Perform root- or namespace-level actions such as creating users; the caller\u0027s role still applies.\n- Read hidden data \u2014 this is an integrity issue, not disclosure.\n\n### Patches\n\nPermission clauses must now be read-only: defining or importing one that contains a write is rejected, and any write attempted while a clause is evaluated is blocked at runtime, including writes reached through a called function. Read-only clauses are unaffected.\n\n- Versions 3.2.0 and later are not affected by this issue.\n\n### Workarounds\n\nUsers unable to patch should consider the following workarounds:\n\n- Review your `PERMISSIONS` clauses and remove any containing `CREATE`, `UPDATE`, `DELETE`, `RELATE`, `INSERT`, or `UPSERT`.\n- Limit who can define schema and vet imported data \u2014 such a clause must be defined before it can be triggered.\n\n### Resources\n\n- [DEFINE TABLE \u2026 PERMISSIONS](https://surrealdb.com/docs/surrealql/statements/define/table)\n- [DEFINE FIELD](https://surrealdb.com/docs/surrealql/statements/define/field)\n- `fix(core): reject writes in PERMISSIONS clauses and block writes during permission evaluation` (included in SurrealDB 3.2.0)\n\n### Acknowledgements\n\nThank you to [sondt99](https://github.com/sondt99) for reporting this issue.",
  "id": "GHSA-66r2-5gwj-gxm2",
  "modified": "2026-09-04T20:50:40Z",
  "published": "2026-09-04T20:50:40Z",
  "references": [
    {
      "type": "WEB",
      "url": "https://github.com/surrealdb/surrealdb/security/advisories/GHSA-66r2-5gwj-gxm2"
    },
    {
      "type": "ADVISORY",
      "url": "https://nvd.nist.gov/vuln/detail/CVE-2026-63733"
    },
    {
      "type": "WEB",
      "url": "https://github.com/surrealdb/surrealdb/commit/1e4c3d743e1591f14f340cb627e56d98b6bd7fd7"
    },
    {
      "type": "WEB",
      "url": "https://github.com/surrealdb/surrealdb/commit/afea699dfb3c8f274ab36861f8a95f5e98d82f1b"
    },
    {
      "type": "PACKAGE",
      "url": "https://github.com/surrealdb/surrealdb"
    },
    {
      "type": "WEB",
      "url": "https://github.com/surrealdb/surrealdb/releases/tag/v3.2.0"
    },
    {
      "type": "WEB",
      "url": "https://www.vulncheck.com/advisories/surrealdb-before-permissions-bypass-via-permissions-clause"
    }
  ],
  "schema_version": "1.4.0",
  "severity": [
    {
      "score": "CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:U/C:N/I:L/A:N",
      "type": "CVSS_V3"
    }
  ],
  "summary": "SurrealDB: Writes in a PERMISSIONS clause bypass table permissions"
}

GHSA-6G69-7XMF-H2X7

Vulnerability from github – Published: 2026-07-20 12:33 – Updated: 2026-09-04 20:49

Withdrawn 2026-09-04

Summary

Duplicate Advisory: Writes in a PERMISSIONS clause bypass table permissions

Details

Duplicate Advisory

This advisory has been withdrawn because it is a duplicate of GHSA-66r2-5gwj-gxm2. This link is maintained to preserve external references.

Original Description

Severity

4.3 (Medium)


                  
                    CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:U/C:N/I:L/A:N

5.3 (Medium)


                  
                    CVSS:4.0/AV:N/AC:L/AT:N/PR:L/UI:N/VC:N/VI:L/VA:N/SC:N/SI:N/SA:N

Show details on source website

JSON

To clipboard

{
  "affected": [
    {
      "database_specific": {
        "last_known_affected_version_range": "\u003c 3.2.0"
      },
      "package": {
        "ecosystem": "crates.io",
        "name": "surrealdb"
      },
      "ranges": [
        {
          "events": [
            {
              "introduced": "0"
            }
          ],
          "type": "ECOSYSTEM"
        }
      ]
    }
  ],
  "aliases": [],
  "database_specific": {
    "cwe_ids": [
      "CWE-863"
    ],
    "github_reviewed": true,
    "github_reviewed_at": "2026-09-04T20:49:44Z",
    "nvd_published_at": "2026-07-20T12:19:42Z",
    "severity": "MODERATE"
  },
  "details": "## Duplicate Advisory\n\nThis advisory has been withdrawn because it is a duplicate of\u00a0GHSA-66r2-5gwj-gxm2. This link is maintained to preserve external references.\n\n## Original Description\nSurrealDB versions before 3.2.0 contain a permissions bypass vulnerability where data-modifying statements within PERMISSIONS clauses execute with enforcement disabled. Attackers with permission to perform a guarded operation can write to tables they lack permission for by embedding CREATE, UPDATE, DELETE, or UPSERT statements in the PERMISSIONS clause, causing unintended writes and data corruption.",
  "id": "GHSA-6g69-7xmf-h2x7",
  "modified": "2026-09-04T20:49:44Z",
  "published": "2026-07-20T12:33:08Z",
  "references": [
    {
      "type": "WEB",
      "url": "https://github.com/surrealdb/surrealdb/security/advisories/GHSA-66r2-5gwj-gxm2"
    },
    {
      "type": "ADVISORY",
      "url": "https://nvd.nist.gov/vuln/detail/CVE-2026-63733"
    },
    {
      "type": "WEB",
      "url": "https://www.vulncheck.com/advisories/surrealdb-before-permissions-bypass-via-permissions-clause"
    }
  ],
  "schema_version": "1.4.0",
  "severity": [
    {
      "score": "CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:U/C:N/I:L/A:N",
      "type": "CVSS_V3"
    },
    {
      "score": "CVSS:4.0/AV:N/AC:L/AT:N/PR:L/UI:N/VC:N/VI:L/VA:N/SC:N/SI:N/SA:N/E:X/CR:X/IR:X/AR:X/MAV:X/MAC:X/MAT:X/MPR:X/MUI:X/MVC:X/MVI:X/MVA:X/MSC:X/MSI:X/MSA:X/S:X/AU:X/R:X/V:X/RE:X/U:X",
      "type": "CVSS_V4"
    }
  ],
  "summary": "Duplicate Advisory: Writes in a PERMISSIONS clause bypass table permissions",
  "withdrawn": "2026-09-04T20:49:44Z"
}

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.

Detection rules are retrieved from Rulezet.

The MITRE ATT&CK techniques below are AI-generated suggestions, inferred from the description of the vulnerability by the CIRCL/vulnerability-attack-technique-classification-roberta-base model, served locally by ML-Gateway. They have not been verified by an analyst and are provided for guidance only.
The approach is described in our paper Mapping CVEs to MITRE ATT&CK Techniques: A Curated Gold-Set Classifier and the Limits of LLM-Assisted Label Expansion.
Browse all ATT&CK techniques and the vulnerabilities related to each.

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.

Action not permitted

CVE-2026-63733 (GCVE-0-2026-63733)

FKIE_CVE-2026-63733

GHSA-66R2-5GWJ-GXM2

Impact

Patches

Workarounds

Resources

Acknowledgements

GHSA-6G69-7XMF-H2X7

Duplicate Advisory

Original Description

Tags

Sightings

Nomenclature

Related by attack behaviour