CVE-2026-63758Network attack vector

Authenticated subscription disruption via missing ownership check

Published Jul 20, 2026 · Updated Jul 20, 2026

Missing authorization in SurrealDB before 3.1.0 allows remote authenticated users to terminate other users' live query subscriptions. The KILL implementation in core/src/expr/statements/kill.rs deletes the resolved live-query entry after checking database access but never compares the requester with the query owner. Exploitation requires database-level access and knowledge of the randomly generated target UUID; the bounded consequence is silent interruption of that subscription.

CVSS severity5.3
Medium
EPSS probability0.31%
Next 30 days · Sep 16, 2026
Known exploitationUnconfirmed
Based on sourced intelligence
Hinoki checkNot available
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Summary

What happened

Missing authorization in SurrealDB before 3.1.0 allows remote authenticated users to terminate other users' live query subscriptions. The KILL implementation in core/src/expr/statements/kill.rs deletes the resolved live-query entry after checking database access but never compares the requester with the query owner. Exploitation requires database-level access and knowledge of the randomly generated target UUID; the bounded consequence is silent interruption of that subscription.

The record

CVE
CVE-2026-63758
Published
Jul 20, 2026
Updated
Jul 20, 2026
Vendor
SurrealDB
Product
SurrealDB
Classifications
CWE-862, T1499.004
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 <3.1.0

What conditions does exploitation require?

Attack vectornetwork
Required privilegesauthenticated

What is affected?

SurrealDB · SurrealDBversion=0 <3.1.0

Published CVSS scores

5.3VulnCheckCVSS:4.0/AV:N/AC:L/AT:N/PR:L/UI:N/VC:N/VI:L/VA:L/SC:N/SI:N/SA:N
5.4SurrealDBCVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:U/C:N/I:L/A:L

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-862Missing Authorization
T1499.004Application or System Exploitation Abuse

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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