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Surrealdb EUVDEUVD-2026-45934

| CVE-2026-63763 HIGH
Authorization Bypass Through User-Controlled Key (CWE-639)
2026-07-20 disclosure@vulncheck.com GHSA-5w8c-cvwv-f5px
7.5
CVSS 4.0 · Vendor: vulncheck
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Vulnerability Assessment

Weakness
CWE
OWASP Top 10:2025
A01:2025 - Broken Access Control
ASVS 5.0
V8 - Authorization Object-level authorization, IDOR prevention
This Week Schedule remediation this week. Why: HIGH severity (CVSS 7.0-8.9).
Patch available 0.2% exploitation probability (EPSS)

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AnalysisAIv1 – Jul 20, 2026

Confused-deputy privilege escalation in SurrealDB before 2.5.0 and before 3.0.0-beta.3 lets a low-privileged user (e.g. the database editor role) plant futures, functions, or closures inside record fields that later execute in the security context of whoever reads or writes the record. When a root owner or namespace admin touches the poisoned field, the attacker's logic runs with elevated permissions, enabling creation of a root owner and full server takeover. There is no public exploit identified at time of analysis, no KEV listing, and no EPSS score supplied, so risk assessment rests on the vendor advisory and CVSS 4.0 signals rather than observed exploitation.

Affected VersionsENISA

surrealdb 0 <2.5.0
surrealdb 0 <3.0.0-beta.3

Affected Packages

cargo surrealdb fix: 2.5.0, 3.0.0-beta.3

Source: OSV (Open Source Vulnerabilities)

Affects your stack

Affects 1 package in cargo

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  • Exploit and PoC references, threat intelligence from 22 sources

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Severity by source

Vendor (vulncheck) PRIMARY 7.5 HIGH
CVSS:4.0/AV:N/AC:L/AT:P/PR:L/UI:P/VC:H/VI:H/VA:H/SC:N/SI:N/SA:N

Primary rating from Vendor (vulncheck) · only source for this CVE.

CVSS VectorVendor: vulncheck

Attack Vector
Network
Attack Complexity
Low
Attack Requirements
Present
Privileges Required
Low
User Interaction
Passive
Vulnerable system: Confidentiality
High
Vulnerable system: Integrity
High
Vulnerable system: Availability
High
Subsequent system: Confidentiality
None
Subsequent system: Integrity
None
Subsequent system: Availability
None

Lifecycle Timeline

2
Patch available
Jul 20, 2026 - 15:33 EUVD
CVE Published
Jul 20, 2026 - 12:19 cve.org
HIGH 7.5

DescriptionCVE.org

SurrealDB before 2.5.0 and before 3.0.0-beta.3 contains a confused deputy privilege escalation vulnerability. Unprivileged users (e.g., those with the database editor role) can create or modify fields containing futures, functions, or closures. Because these are executed in the context of the invoking/querying user rather than their creator, an attacker can plant malicious logic that executes with a higher-privileged user's permissions when that user reads or writes the affected record. This can lead to full privilege escalation, including creation of a root owner and server takeover.

Executive ViewAI

Why It Matters

SurrealDB contains a privilege escalation vulnerability (CVE-2026-63763, CVSS 7.5) that allows any authenticated database editor user to escalate to root owner and achieve complete server takeover. No public exploit has been identified at time of analysis, but the potential impact is total compromise of the SurrealDB system. Organizations relying on SurrealDB face critical risk if any database editor account is compromised or if any insider with that role acts maliciously.

Recommended Action

Within 24 hours: Audit all SurrealDB instances and immediately restrict database editor role to only absolutely essential users with formal justification; enable comprehensive access logging and review existing logs for suspicious activity from low-privileged accounts. Within 7 days: Implement network segmentation to restrict SurrealDB access to internal trusted networks only; require multi-factor authentication on all database administrative accounts; establish daily monitoring of vendor advisories for patch availability. Within 30 days: Monitor for SurrealDB vendor patch release and maintain change management readiness to upgrade immediately upon availability; evaluate alternative database solutions if your risk profile requires taking SurrealDB offline; test and execute upgrade plan within 48 hours of patch release with full validation in staging first.

Business Impact: Severe
Compensating Controls

No vendor-released patch identified at time of analysis. Immediate mitigations: Restrict database editor role access to only absolutely essential personnel and require formal business justification; implement network segmentation to limit SurrealDB accessibility; require multi-factor authentication for administrative access; enable and actively monitor all database audit logs for privilege escalation attempts; consider air-gapping vulnerable SurrealDB instances from untrusted applications or users; prepare data migration plan to alternative database solutions if risk tolerance requires operational restriction until patch availability.

Threat Intelligence Overview

EPSS Score
0.2%
Top 85% exploitable
Data Quality
6 sources
Confidence: High

How this decision was reached

The engine reads each signal below and applies a fixed list of rules from top to bottom. The first rule that matches sets the recommended action – like a statement, every line is shown.

SignalValue
Severity HIGH
CISA KEV No
Public POC No
EPSS 0.2%
Patch available Yes
Active threat No
Deciding rule
HIGH severity (CVSS 7.0-8.9)
What every action level means
Emergency Immediate action required. Criteria: CRITICAL + in CISA KEV (actively exploited) without patch, OR CRITICAL + EPSS > 30% without patch, OR CRITICAL + active threat signals without patch.
Act Now Prioritize within 24-48h. Criteria: in KEV with patch available, OR CRITICAL + public POC, OR HIGH + EPSS > 10%, OR CRITICAL + active threat, OR any CRITICAL severity.
This Week Schedule remediation this week. Criteria: HIGH severity (CVSS 7.0-8.9). Patch within normal change window.
This Month Plan within 30 days. Criteria: MEDIUM severity (CVSS 4.0-6.9), lower exploitation probability. Include in regular patch cycle.
Monitor Track and reassess. Criteria: LOW severity (CVSS 0.1-3.9), minimal exploitation risk. No immediate action needed.

SSVC AssessmentENISA

SSVC Decision
Scheduled
Exploitation
None
System Exposure· derived
Open
Automatable
No
Human Impact
Very High
Technical Impact
Total

Priority Score

38
Low Medium High Critical
KEV: 0
EPSS: 0
CVSS: +38
PoC: 0
Weaponized: 0
Threat intel: 0
Gov advisory: 0

Attack Technique

Authentication bypass attacks exploit flaws in the verification mechanisms that control access to systems and applications.

Privilege escalation occurs when an attacker leverages flaws in access control mechanisms to gain permissions beyond what they were originally granted.

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