CVE-2026-47735Public exploitNetwork attack vector

Authenticated file disclosure via unchecked DuckDB I/O

Published Aug 21, 2026 · Updated Aug 25, 2026

Path traversal in Basekick Labs Arc before 2026.06.1 allows remote authenticated users to read arbitrary local files through SQL queries. ValidateSQLRequest denylisted only two functions, while RBAC inspected only FROM and JOIN, leaving DuckDB I/O functions in SELECT unchecked. Any token, including one with no permissions, can expose token hashes, configuration secrets, environment data, or cross-tenant files; SSRF also occurs when httpfs is loaded.

CVSS severity7.1
High
EPSS probability0.29%
Next 30 days · Sep 16, 2026
Known exploitationUnconfirmed
Based on sourced intelligence
Hinoki checkNot available
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Summary

What happened

Path traversal in Basekick Labs Arc before 2026.06.1 allows remote authenticated users to read arbitrary local files through SQL queries. ValidateSQLRequest denylisted only two functions, while RBAC inspected only FROM and JOIN, leaving DuckDB I/O functions in SELECT unchecked. Any token, including one with no permissions, can expose token hashes, configuration secrets, environment data, or cross-tenant files; SSRF also occurs when httpfs is loaded.

The record

CVE
CVE-2026-47735
Published
Aug 21, 2026
Updated
Aug 25, 2026
Vendor
Basekick Labs
Product
Arc
Classifications
CWE-22, CWE-918, CWE-200, T1005, T1555
Attack vector
network
Privileges
authenticated

Timeline

How it unfolded

  1. Aug 21, 2026CVE publishedPublication date reported by the CVE source.
  2. Aug 25, 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=< 2026.06.1

What conditions does exploitation require?

Attack vectornetwork
Required privilegesauthenticated

What is affected?

Basekick Labs · Arcversion=< 2026.06.1

Published CVSS scores

7.1GitHub CNACVSS:4.0/AV:N/AC:L/AT:N/PR:L/UI:N/VC:H/VI:N/VA:N/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 exploitPublished

Weakness, pattern, technique

CWE-22Improper Limitation of a Pathname to a Restricted Directory ('Path Traversal')
CWE-918Server-Side Request Forgery (SSRF)
CWE-200Exposure of Sensitive Information to an Unauthorized Actor
T1005Data from Local System
T1555Credentials from Password Stores

Public exploit references

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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