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  4. CVE 2026 75845 arcadedb 2642 before 2681 authorization bypass
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Back to active CVEs
Medium · CVSS 6.3CVE-2026-75845

ArcadeDB 26.4.2 before 26.8.1 Authorization Bypass via set_server_setting

Answer in brief

CVE-2026-75845 records a Medium severity (CVSS 6.3) vulnerability in ArcadeDB 26.4.2 before 26.8.1 Authorization Bypass via set_server_setting. The current sources do not mark it as known exploited. The current feed maps ArcadeData/arcadedb (generic). Check affected ranges and fixed versions before updating.

Analysis pending evidence review

HOL Guard separates source facts from reviewed analysis. See the methodology.

Published Aug 18, 2026Updated Sep 8, 2026Source checked Oct 2, 2026First seen by HOL Aug 18, 2026Material review Sep 8, 2026
Upstream Advisory

Key facts

Risk
Medium · CVSS 6.3
Exploitation
Not marked as known exploited
Affected software
1 mapped package or product
Fix availability
Available

Why this deserves its current priority

CVSS is 6.3. The current sources do not mark it as known exploited. Treat this as a source-backed prioritization signal, not a statement about your environment.

Analysis status

Analysis pending evidence review

Factual feed record only; HOL analysis is not approved for indexing. Read the methodology.

Affected scope and exposure questions

The current feed maps ArcadeData/arcadedb (generic). Check affected ranges and fixed versions before updating.

Mapped affected packages and fixed versions
PackageAffected rangeFixed version
ArcadeData/arcadedbgeneric>=26.4.2 <26.8.126.8.1

Recommended response

  1. 1Check inventory. Check lockfiles and deployed manifests for ArcadeData/arcadedb.
  2. 2Review the reported fix. Update ArcadeData/arcadedb to 26.8.1 if you use the affected versions. Test the change in a non-production environment first.

Evidence timeline and material changes

  1. Published upstream

    Aug 18, 2026

    Evidence: source:cvelist:source_dates:source-dates:record

  2. Source modified

    Sep 8, 2026

    Evidence: source:cvelist:source_dates:source-dates:record

  3. First seen by HOL

    Aug 18, 2026

Sources and claim methodology

  • GitHub security advisorygithub.com
  • Source referencevulncheck.com
Upstream source description

ArcadeDB versions 26.4.2 through 26.7.3 contain an authorization bypass vulnerability in the set_server_setting MCP server-level tool. SetServerSettingTool.execute() gates only on the global allowAdmin flag and never checks the caller's role, so in an MCP deployment with allowAdmin=true and a non-root allowedUsers set, any authenticated read-only user can invoke set_server_setting to modify server GlobalConfiguration, enabling configuration tampering or denial of service. The issue is fixed in 26.8.1.

Quoted source text, attributed separately from HOL analysis.

Related CVEs

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  • WordPress ThemeREX Addons plugin <= 2.46.0 - Server Side Request Forgery (SSRF) vulnerabilitySame generic ecosystem
  • WordPress ThemeREX Addons plugin <= 2.46.0 - Cross Site Scripting (XSS) vulnerabilitySame generic ecosystem
  • CISA ADP VulnrichmentSame generic ecosystem
  • Tenda AC9 POST Request fast_setting_internet_set stack-based overflowSame generic ecosystem
  • SourceCodester Student Result Management System Announcement new_announcement.php cross site scriptingSame generic ecosystem

Record context

Vulnerability class
Privilege Escalation
EPSS
Not reported
CWE IDs
CWE-269
Source
CVE List V5
Source checked
Oct 2, 2026
References
2 linked sources
Open source record