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PatchSiren cyber security CVE debrief

CVE-2026-63733 surrealdb CVE debrief

CVE-2026-63733 is a permissions bypass vulnerability in SurrealDB versions before 3.2.0. The vulnerability allows attackers with permission to perform a guarded operation to 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. This vulnerability has a CVSS score of 5.3 and a severity of MEDIUM. Users of SurrealDB versions before 3.2.0 should be aware of this vulnerability and take steps to mitigate it.

Vendor
surrealdb
Product
Unknown
CVSS
MEDIUM 5.3
CISA KEV
Not listed in stored evidence
Original CVE published
2026-07-20
Original CVE updated
2026-07-22
Advisory published
2026-07-20
Advisory updated
2026-07-22

Who should care

Users of SurrealDB versions before 3.2.0 should be aware of this vulnerability and take steps to mitigate it. This includes upgrading to version 3.2.0 or later, and monitoring for suspicious activity. Operators, platform administrators, vulnerability management teams, and security teams should review the vulnerability and take necessary actions to protect their systems.

Technical summary

The vulnerability is caused by a permissions bypass in the PERMISSIONS clause of SurrealDB versions before 3.2.0. Attackers can exploit this vulnerability by embedding data-modifying statements within the PERMISSIONS clause, allowing them to write to tables they lack permission for. This can lead to unintended writes and data corruption. The vulnerability has a CVSS score of 5.3 and a severity of MEDIUM. Users of SurrealDB versions before 3.2.0 should be aware of this vulnerability and take steps to mitigate it, including upgrading to version 3.2.0 or later, and monitoring for suspicious activity. Operators, platform administrators, vulnerability management teams, and security teams should review the vulnerability and take necessary actions to protect their systems. Further verification is recommended to confirm affected scope and severity.

Defensive priority

Medium

Recommended defensive actions

  • Upgrade to SurrealDB version 3.2.0 or later
  • Monitor for suspicious activity
  • Restrict access to sensitive tables
  • Implement additional security measures to prevent data corruption
  • Review compensating controls for exposed systems while remediation is scheduled and verified
  • Check relevant monitoring, detection, and logs for exposed assets that need extra review
  • Track exceptions, retest remediated assets, and close the item only after evidence is documented

Evidence notes

The CVE record was published on 2026-07-20T12:19:42.243Z and was last modified on 2026-07-21T18:37:56.803Z. The NVD entry is currently Awaiting Analysis. This information is based on the CVE record and NVD entry. Further verification is recommended to confirm affected scope and severity.

Sources and references

Verified primary and authoritative sources

  • CVE-2026-63733 CVE Program record

    Publisher, destination, and source semantics verified

    URL: https://www.cve.org/CVERecord?id=CVE-2026-63733

    CVE Program - Official CVE Program record with source-provided CVE metadata.

  • CVE-2026-63733 NVD vulnerability detail

    Publisher, destination, and source semantics verified

    URL: https://nvd.nist.gov/vuln/detail/CVE-2026-63733

    NIST National Vulnerability Database - Official NIST NVD detail page and source-specific vulnerability assessment.

Supplemental references

Methodology and review provenance

AI-assisted synthesis based on stored public vulnerability evidence. System validation, approval state, and publication status do not by themselves establish human review of this revision. PatchSiren helps prioritize defensive review and does not prove exposure or remediation on any system.