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CVE-2026-63739 surrealdb CVE debrief

CVE-2026-63739 is an arbitrary file read vulnerability in SurrealDB before 3.1.5. The vulnerability exists in the DEFINE ANALYZER mapper filter and allows database users with EDITOR or OWNER roles to read files accessible to the SurrealDB process. Attackers can specify arbitrary file paths in the mapper filter and retrieve file contents through query error messages when the SURREAL_FILE_ALLOWLIST is empty or not configured. This vulnerability has a CVSS score of 8.3, indicating high severity. Users of SurrealDB versions before 3.1.5 should be aware of this vulnerability and take steps to mitigate it.

Vendor
surrealdb
Product
Unknown
CVSS
HIGH 8.3
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 3.1.5 should be aware of this vulnerability and take steps to mitigate it. This includes restricting access to the SurrealDB process and configuring the SURREAL_FILE_ALLOWLIST. Operators, platform administrators, vulnerability management teams, and security teams should review their deployments and take necessary actions to protect against this vulnerability.

Technical summary

The vulnerability exists in the DEFINE ANALYZER mapper filter of SurrealDB before 3.1.5. It allows database users with EDITOR or OWNER roles to read files accessible to the SurrealDB process by specifying arbitrary file paths in the mapper filter. The file contents can be retrieved through query error messages when the SURREAL_FILE_ALLOWLIST is empty or not configured. The CVSS score for this vulnerability is 8.3, indicating a high severity. Users should restrict access to the SurrealDB process and configure the SURREAL_FILE_ALLOWLIST to prevent exploitation.

Defensive priority

High priority should be given to patching SurrealDB versions before 3.1.5. Users should restrict access to the SurrealDB process and configure the SURREAL_FILE_ALLOWLIST to prevent exploitation.

Recommended defensive actions

  • Patch SurrealDB to version 3.1.5 or later
  • Restrict access to the SurrealDB process
  • Configure the SURREAL_FILE_ALLOWLIST
  • 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
  • Confirm whether affected product deployments exist in managed environments and assign an owner for follow-up

Evidence notes

The CVE record was published on 2026-07-20T12:19:43.143Z and was last modified on 2026-07-21T18:37:56.803Z. The NVD entry is currently Awaiting Analysis. This vulnerability affects SurrealDB versions before 3.1.5, and users should verify their deployments and review official advisories for affected scope and severity.

Sources and references

Verified primary and authoritative sources

  • CVE-2026-63739 CVE Program record

    Publisher, destination, and source semantics verified

    URL: https://www.cve.org/CVERecord?id=CVE-2026-63739

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

  • CVE-2026-63739 NVD vulnerability detail

    Publisher, destination, and source semantics verified

    URL: https://nvd.nist.gov/vuln/detail/CVE-2026-63739

    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.