NVD / CVE Program· CNA VulnCheck

CVE-2026-75852: ArcadeDB MongoDB wire protocol authentication bypass cross-database

Noroxi assessment

Priority: Monitor (action score 37/100)

The sources we track (CISA KEV, Exploit-DB, Metasploit, Nuclei, GitHub) show no public exploit code or exploitation in the wild.
Probability of exploitation in the next 30 days: 0.66% (FIRST EPSS); higher than 51.5% of all records.
Anyone who can reach it over the internet can trigger it. No account or password is required. No user action is required. No special conditions are required; it is repeatable.
According to CISA the attack is automatable: targets can be found by mass scanning.
Fixed version: ArcadeData arcadedb 26.8.1.

Low priority for now. Upgrade to ArcadeData arcadedb 26.8.1 or later.

Generated automatically from the record's data: CVSS (NVD and CNA), CISA KEV and SSVC, FIRST EPSS, exploit sources, fixed versions. How we calculate it

Primary sources: NVD · CVE.org · FIRST EPSS

ArcadeDB versions before 26.8.1 fail to enforce SASL authentication on data commands in the MongoDB wire-protocol plugin. Unauthenticated attackers can issue insert, find, update, delete, and create commands against any database by connecting to port 27017 without credentials.

CriticalCVSS 9.3 · v4.0—No exploit Fix available

Published: Aug 18, 2026
Updated: Oct 22, 2026
EPSS: 0.6% · 51th percentile
CWE: CWE-306

Report tools

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Action score

Monitor

Low priority for now.

CVSS: 37 / 40 · 9.3 / 10
CISA KEV: 0 / 30 · Not listed
EPSS: 0 / 30 · 0.6%

CISA SSVC decision

Exploitation: none
Automatable: yes
Technical impact: total

Vulnrichment: CISA's decision-tree inputs.

CNA vs NVD score

NVD: —
CNA · VulnCheck: 9.3; NVD has not scored this yet; the score shown is the CNA’s.

CVSS:4.0/AV:N/AC:L/AT:N/PR:N/UI:N/VC:H/VI:H/VA:H/SC:N/SI:N/SA:N

The score given by the assigning authority versus NVD’s independent score. A gap means the severity is contested.

Get told when this record changes

Not in KEV: no record of exploitation in the wild
No public exploit code on record
A fix has been released

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Noroxi analysis

What does it mean in your environment?

The assessment above is generated automatically from the record's data; it doesn't know your environment. Our team verifies on your systems whether this vulnerability is actually exploitable and which mitigation is enough.

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Affected systems

Is your version affected?

Pick the product and type the version you run. It's compared with this record's version ranges in your browser; the version isn't sent anywhere.

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Versions reported by the vendor

Affected version ranges reported by the assigning authority (VulnCheck). Independent of NVD's CPE analysis and usually ahead of it.

ArcadeData arcadedb
- 26.8.1not affected
- before 26.8.1affected · semver

Same product

arcadedata: all records

Other highest-scoring records for the same primary product.

CVE-2026-75854ArcadeDB Redis Wire-Protocol Plugin Missing Authentication
37Monitor
CVE-2026-75851ArcadeDB before 26.8.1 Authentication Bypass via Async Command
37Monitor
CVE-2026-75843ArcadeDB before 26.8.1 Privilege Escalation via gRPC Transaction
37Monitor

Published before and after this one in the same product

← EarlierCVE-2026-75846Aug 18, 2026 · ArcadeDB before 26.8.1 Unauthorized Function Deletion via DELETE FUNCTION
28Monitor
← EarlierCVE-2026-75850Aug 18, 2026 · ArcadeDB before 26.8.1 Per-Type ACL Bypass via Batch Handlers
9Monitor
Later →CVE-2026-75853Aug 18, 2026 · ArcadeDB Gremlin Wire Protocol Authorization Bypass Cross-Database
34Monitor

Remediation

Which version to upgrade to

Fix versions compiled from the vendor, package registries and Microsoft. Verify the vendor's note before upgrading.

Product / package	Fixed version	Source
ArcadeData arcadedb	26.8.1	Vendor (CNA)

Exploit status

No known public exploit

No public exploit has been observed yet. That doesn't mean you're safe, only that the bar is a little higher.

Research context

For pentesters and researchers: attack profile, score disagreement, timeline, patch commits, credits, variant and chain candidates, bug bounty scope. All derived from existing data; no exploit code.

Timeline

From publication to today: proof of concept, Metasploit module, CISA KEV and fix record. Dates are as reported by the sources.

No dated events beyond publication.

EPSS, last 120 days

FIRST EPSS daily score; only changes of 0.01 or more are recorded (step chart).

Patch and commit links

Commit, PR and diff links among the references. A starting point for patch-diffing and variant hunting; fixes, not exploits.

No commit or PR link among the references.

Credits

All researchers

Finders, reporters and analysts named in the CNA record. Click a name for that researcher’s other records.

chow8386reporter
manus-usereporter

Variant candidates

Same product, same weakness class, within 18 months. If the patch missed the root cause, the sibling bug is here.

CVE-2026-758540 days apartArcadeDB Redis Wire-Protocol Plugin Missing Authentication
37Monitor
CVE-2026-6857816 days apartArcadeDB before 26.7.3 Authentication Bypass via MCP Transport
30Monitor

Chain candidates

An authentication bypass and a privilege-requiring bug in the same product, published close together: combined they may become an unauthenticated path.

CVE-2026-762241 days apartArcadeDB before 26.8.1 Remote Code Execution via Groovy Fallback
34Monitor
CVE-2026-758420 days apartArcadeDB before 26.8.1 Arbitrary File Read via LOAD CSV
33Monitor
CVE-2026-758550 days apartArcadeDB before 26.8.1 Path Traversal via create/drop database
33Monitor
CVE-2026-758440 days apartArcadeDB before 26.8.1 SSRF via IMPORT DATABASE validator bypass
28Monitor

Bug bounty scope

No known public program.

Source: bounty-targets-data (public HackerOne, Bugcrowd, Intigriti, YesWeHack listings).

Technical details

Attack conditions

Anyone who can reach it over the internet can trigger it.
No account or password is required.
No user action is required.
No special conditions are required; it is repeatable.

If successful

Confidentiality
Integrity
Availability

Attack vector: Network
Attack complexity: Low
Privileges required: None
User interaction: None
Scope: X

Weakness class (CWE)

CWE-306 · Missing Authentication for Critical Function

CVSS vector

CVSS:4.0/AV:N/AC:L/AT:N/PR:N/UI:N/VC:H/VI:H/VA:H/SC:N/SI:N/SA:N/E:X/CR:X/IR:X/AR:X/MAV:X/MAC:X/MAT:X/MPR:X/MUI:X/MVC:X/MVI:X/MVA:X/MSC:X/MSI:X/MSA:X/S:X/AU:X/R:X/V:X/RE:X/U:X

nvd-secondary

Root cause

A function added for development or support ships to production without authentication. It often relies on the assumption that it is “only reachable from the internal network.”

The bug in code

The whole CWE-306 class

A representative example of this vulnerability class. Not the vendor's source code; it shows the faulty pattern and its fix.

Vulnerable

1// Added for the support team
2app.post("/maintenance/reset", resetDevice);

Fixed

1if (config.maintenanceEnabled) {
2  app.post(
3    "/maintenance/reset",
4    requireSession, requireRole("admin"), resetDevice
5  );
6}

Attack context

MITRE CAPEC attack patterns and ATT&CK techniques for this weakness class (CWE). A starting point for detection rules and threat hunting.

Attack patterns (CAPEC)

ATT&CK techniques

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Change log

Fix✗ → ✓Sep 28, 2026, 10:10 PM UTC

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References

github.com/ArcadeData/arcadedb/security/advisories/GHSA-fq9c-x968-g278

Show all references (1 more)

www.vulncheck.com/advisories/arcadedb-mongodb-wire-protocol-authentication-bypass-cross-database

Vendor advisories and official records. Exploit/PoC links are deliberately left out.

All records