How should we interpret CVSS severity scores?

CVSS estimates technical severity, but it does not automatically equal business risk. Prioritize using context like internet exposure, asset criticality, known exploitation, and whether compensating controls exist. A Medium CVSS on an exposed production system can be more urgent than a Critical on an isolated non-production host.

Vulnerability Database

Q: What is a Vulnerability (CVE) and why does it matter?

A security vulnerability is a weakness in software, hardware, or configuration that can be exploited to compromise confidentiality, integrity, or availability. Many vulnerabilities are tracked as CVEs (Common Vulnerabilities and Exposures), which provide a standardized identifier so teams can coordinate patching, mitigation, and risk assessment across tools and vendors.

Q: What's the difference between a vulnerability, an exploit, and a zero-day?

A vulnerability is the underlying weakness. An exploit is the method or code used to take advantage of it. A zero-day is a vulnerability that is unknown to the vendor or has no publicly available fix when attackers begin using it. Risk increases sharply when exploitation becomes reliable or widespread.

Q: Why do vulnerabilities keep reappearing in our environment?

Recurring findings usually come from incomplete asset discovery, inconsistent patch management, inherited images, and configuration drift. In modern environments, you also need to watch the software supply chain: dependencies, containers, build pipelines, and third-party services can reintroduce the same weakness even after you patch a single host.

Q: How do we prioritize remediation without burning out the team?

Use a repeatable triage model: focus first on externally exposed assets, high-value systems (identity, VPN, email, production), vulnerabilities with known exploits, and issues that enable remote code execution or privilege escalation. Then enforce patch SLAs and track progress so remediation is steady, not reactive.

Q: How can SynScan help reduce vulnerability risk over time?

SynScan combines attack surface monitoring and continuous security auditing to keep your inventory current, flag high-impact vulnerabilities early, and help you turn raw findings into a practical remediation plan.

362,557

Total vulnerabilities in the database

SurrealDB: Arbitrary file read via DEFINE ANALYZER mapper() filter — surrealdb

Generation of Error Message Containing Sensitive Information

SurrealDB's full-text search lets you define a text analyzer whose mapper filter loads a term-mapping file from disk (DEFINE ANALYZER ... FILTERS mapper('<path>')). A database user with the EDITOR or OWNER role could point that filter at any file the SurrealDB process can read and have its content returned in the query's error message.

File access is meant to be restricted by the SURREAL_FILE_ALLOWLIST setting, but an empty allowlist applied no restriction at all — and empty is the default.

Impact

The file is read with the privileges of the SurrealDB process, so a database EDITOR or OWNER user can disclose the contents of any file the process can access. Only the first line of the file is returned, except for files with no newlines.

However recovering the process's command line and environment could expose startup root credentials (--user / --pass) and secret environment variables, escalating a single-database role toward full control of the instance.

The read on the underlying filesystem is bounded by what the SurrealDB process can reach — any file readable by the OS user it runs as — so the impact scales with how the process is run and what is mounted into it.

Patches

A patch has been included in SurrealDB 3.1.5.

File access is now secure by default. check_is_path_allowed denies every path when no SURREAL_FILE_ALLOWLIST is configured, so the mapper filter cannot open any file unless the operator has explicitly allowed its directory. Analyzer parse errors no longer include the contents of the mapped file, only the line number.

Workarounds

Users unable to upgrade are advised to consider the following:

Set SURREAL_FILE_ALLOWLIST to a directory that contains only the intended mapping files; this confines the mapper filter to that path. On affected versions the allowlist must be non-empty to have any effect.
Grant the EDITOR and OWNER database roles only to trusted principals.
Avoid supplying secrets — including the root credentials — on the command line or through environment variables; prefer mounted files with least-privilege permissions.

References

SurrealQL Documentation — DEFINE ANALYZER
SurrealDB Documentation — Capabilities
Related earlier advisory: GHSA-2cvj-g5r5-jrrg local file read of 2-column TSV files via analyzers
https://github.com/surrealdb/surrealdb/pull/5600
fix(iam): deny filesystem access by default and stop leaking file content in analyzer errors

Acknowledgements

Thanks to Jan Kahmen (@kah-ja) for finding and reporting this issue.

Published: Jun 19, 2026
Updated: Jun 20, 2026
GHSA: GHSA-cc8f-fcx3-gpjr
Severity: High
Exploit:
CISA KEV:

CVSS v3:

Severity: High
Score: 7.7
AV:N/AC:L/PR:L/UI:N/S:C/C:H/I:N/A:N

CWEs:

OWASP TOP 10:

Affected Software
References

Software	From	Fixed in
surrealdb	-	3.1.5

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Frequently Asked Questions

What is a Vulnerability (CVE) and why does it matter?

A security vulnerability is a weakness in software, hardware, or configuration that can be exploited to compromise confidentiality, integrity, or availability. Many vulnerabilities are tracked as CVEs (Common Vulnerabilities and Exposures), which provide a standardized identifier so teams can coordinate patching, mitigation, and risk assessment across tools and vendors.

CVSS (Common Vulnerability Scoring System) estimates technical severity, but it doesn't automatically equal business risk. Prioritize using context like internet exposure, affected asset criticality, known exploitation (proof-of-concept or in-the-wild), and whether compensating controls exist. A "Medium" CVSS on an exposed, production system can be more urgent than a "Critical" on an isolated, non-production host.

A vulnerability is the underlying weakness. An exploit is the method or code used to take advantage of it. A zero-day is a vulnerability that is unknown to the vendor or has no publicly available fix when attackers begin using it. In practice, risk increases sharply when exploitation becomes reliable or widespread.

Recurring findings usually come from incomplete Asset Discovery, inconsistent patch management, inherited images, and configuration drift. In modern environments, you also need to watch the software supply chain: dependencies, containers, build pipelines, and third-party services can reintroduce the same weakness even after you patch a single host. Unknown or unmanaged assets (often called Shadow IT) are a common reason the same issues resurface.

Use a simple, repeatable triage model: focus first on externally exposed assets, high-value systems (identity, VPN, email, production), vulnerabilities with known exploits, and issues that enable remote code execution or privilege escalation. Then enforce patch SLAs and track progress using consistent metrics so remediation is steady, not reactive.

SynScan combines attack surface monitoring and continuous security auditing to keep your inventory current, flag high-impact vulnerabilities early, and help you turn raw findings into a practical remediation plan.