CVE-2025-71391Network attack vector

Authenticated database crash via uncaught JSON conversion

Published Jul 18, 2026 · Updated Jul 18, 2026

Uncaught exception handling in SurrealDB before 2.2.2 allows remote authenticated users to crash the database through the /sql endpoint. The net module converts a crafted query result containing a null byte to JSON for the HTTP response without catching the resulting exception. Any authenticated user able to submit arbitrary SurrealQL can terminate the instance, interrupting the database and applications that depend on it.

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

What happened

Uncaught exception handling in SurrealDB before 2.2.2 allows remote authenticated users to crash the database through the /sql endpoint. The net module converts a crafted query result containing a null byte to JSON for the HTTP response without catching the resulting exception. Any authenticated user able to submit arbitrary SurrealQL can terminate the instance, interrupting the database and applications that depend on it.

The record

CVE
CVE-2025-71391
Published
Jul 18, 2026
Updated
Jul 18, 2026
Vendor
SurrealDB
Product
SurrealDB
Classifications
CWE-248, T1499.004
Attack vector
network
Privileges
authenticated

Timeline

How it unfolded

  1. Jul 18, 2026CVE publishedPublication date reported by the CVE source.
  2. Jul 18, 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 <2.0.5
  2. Affected versionversion=0 <2.1.5
  3. Affected versionversion=0 <2.2.2

What conditions does exploitation require?

Attack vectornetwork
Required privilegesauthenticated

What is affected?

SurrealDB · SurrealDBversion=0 <2.0.5; version=0 <2.1.5; version=0 <2.2.2

Published CVSS scores

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

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.

Daily unique IPsNo honeypot observations are available for this CVE in the selected window.

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-248Uncaught Exception
T1499.004Application or System Exploitation

Public exploit references

No public exploit references are available in this record.

Labels summarize the accepted research assessment. They do not indicate a test against your environment.

Technologies

Your stack

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Your stack

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