CVE-2025-71395Network attack vector

Authenticated service crash via unbounded regex replacement

Published Jul 18, 2026 · Updated Jul 18, 2026

Memory exhaustion in SurrealDB before 2.2.2 allows remote authenticated users to crash the database server with a crafted query. The string::replace function performs regex replacement without limiting the resulting string length, causing unbounded memory allocation. Access to authenticated query execution is required; exploitation exhausts server memory and crashes the SurrealDB instance.

CVSS severity7.1
High
EPSS probability0.25%
Next 30 days · Sep 16, 2026
Known exploitationUnconfirmed
Based on sourced intelligence
Hinoki checkNot available
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Summary

What happened

Memory exhaustion in SurrealDB before 2.2.2 allows remote authenticated users to crash the database server with a crafted query. The string::replace function performs regex replacement without limiting the resulting string length, causing unbounded memory allocation. Access to authenticated query execution is required; exploitation exhausts server memory and crashes the SurrealDB instance.

The record

CVE
CVE-2025-71395
Published
Jul 18, 2026
Updated
Jul 18, 2026
Vendor
SurrealDB
Product
SurrealDB
Classifications
CWE-789, 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

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

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-789Memory Allocation with Excessive Size Value
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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