CVE-2026-63740Network attack vector

Data disclosure via forward array index removal

Published Jul 20, 2026 · Updated Jul 20, 2026

Incorrect authorization in SurrealDB before 3.1.4 allows remote authenticated users to read denied array elements via SELECT queries. In doc/reduce.rs, doc/output.rs, and exec/operators/scan/pipeline.rs, forward removal of denied indexes shifts later array positions and leaves elements unfiltered. Record-scope access to a SELECT-readable table with field.* rules is required; the flaw discloses array values but does not alter data or privileges.

CVSS severity7.1
High
EPSS probability0.36%
Next 30 days · Sep 16, 2026
Known exploitationUnconfirmed
Based on sourced intelligence
Hinoki checkNot available
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Summary

What happened

Incorrect authorization in SurrealDB before 3.1.4 allows remote authenticated users to read denied array elements via SELECT queries. In doc/reduce.rs, doc/output.rs, and exec/operators/scan/pipeline.rs, forward removal of denied indexes shifts later array positions and leaves elements unfiltered. Record-scope access to a SELECT-readable table with field.* rules is required; the flaw discloses array values but does not alter data or privileges.

The record

CVE
CVE-2026-63740
Published
Jul 20, 2026
Updated
Jul 20, 2026
Vendor
SurrealDB
Product
SurrealDB
Classifications
CWE-863, T1213
Attack vector
network
Privileges
authenticated

Timeline

How it unfolded

  1. Jul 20, 2026CVE publishedPublication date reported by the CVE source.
  2. Jul 20, 2026Record updatedLatest update available in the CVE record.

Exploitability

Present is not the same as exploitable

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Is a vulnerable build present?

Compare these published version ranges with your installed build and any vendor patches.

  1. Affected versionversion=0 <3.1.4

What conditions does exploitation require?

Attack vectornetwork
Required privilegesauthenticated

What is affected?

SurrealDB · SurrealDBversion=0 <3.1.4

Published CVSS scores

7.1VulnCheckCVSS:4.0/AV:N/AC:L/AT:N/PR:L/UI:N/VC:H/VI:N/VA:N/SC:N/SI:N/SA:N
6.5VulnCheckCVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:U/C:H/I:N/A:N

CVSS describes severity. EPSS estimates exploitation probability.

Attacks

What attackers are doing with it

Daily unique IPs observed by Shadowserver honeypots for known exploited vulnerabilities (KEVs). Missing observations do not establish an absence of attacks.

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No observations available

Sep 10, 2026Sep 16, 2026
Latest reporting daySep 16, 2026
Latest daily unique IPsUnavailable
Prior 30-day averageUnavailable
SourceShadowserver honeypots (KEV)
Vectornetwork
Privilegesauthenticated
Known exploitationUnconfirmed
Public exploitUnconfirmed

Weakness, pattern, technique

CWE-863Incorrect Authorization
T1213Data from Information Repositories

Public exploit references

No public exploit references are available in this record.

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Technologies

Your stack

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Your stack

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