CVE-2026-65831

HIGHPre-NVD 7.77.7—
EchelonGraph scoreMEDIUM confidence

This high-severity CVE scores 7.7 under a secondary CVSS source (NVD's own analysis pending). EPSS exploit probability: 0.6%, top 54% of all CVEs by exploit prediction. GitHub Security Advisory data not yet ingested — confidence will rise once GHSA publishes (typical lag: hours to days for open-source ecosystem CVEs; never for infrastructure-only CVEs).

Triggered by: NVD CVSS baseline
Sources: epss, secondary
7.7EG
EchelonGraph verdictPlan a fixSerious severity, but no confirmed exploitation yet.
  • High severity, but no confirmed exploitation yet
CISA-KEV: Not listedEPSS PROB: 1%CVSS: 7.7Exploit: None knownExposed: 0

No vendor fix yet — apply a workaround or compensating control (WAF / firewall / segmentation) and watch for a patch.

ArcadeDB is a Multi-Model DBMS. Prior to 26.7.1, a reader-role user can submit POST /api/v1/command/{database} with language: js because PolyglotQueryEngine.command, PolyglotQueryEngine.analyze, and PolyglotQueryEngine.registerFunctions do not enforce database-administrator authorization. GraalPolyglotEngine also permits scripts to bypass the allowedPackages whitelist by reflecting from the bound database object through database.getClass().getClassLoader().loadClass to arbitrary host classes. These cooperating defects allow a read-only database user to read arbitrary host files outside the database scope. Process creation is already blocked, so OS command execution is not confirmed. The issue is distinct from CVE-2026-44221, CVE-2026-54076, and CVE-2026-54077. This issue is fixed in version 26.7.1.

CVSS v3
7.7
EG Score
7.7(medium)
EG Risk
35(Track)
EG Risk 35/100SSVC: Track

EG Risk is EchelonGraph's 0–100 priority score: it fuses intrinsic severity with real-world exploitation and automatability so you can rank equal-severity CVEs and fix the most dangerous first. Higher = act sooner. Distinct from the 0–10 EG Score (severity).

How it’s computed
Severity77% × 45%
Exploitation1% × 40%
Automatability0% × 15%
Action: Routine — remediate on your standard cadence.
EPSS PROB
1%
EPSS %ILE
46%
KEV
Not listed

Published

September 15, 2026

Last Modified

September 15, 2026

Advisory Details (3)

Auto-updated Sep 15, 2026
Patch available. Sources: github_commit, github_release, github.
github_release Patch Available

26.7.1

Patch available: ArcadeData/arcadedb 26.7.1

https://github.com/ArcadeData/arcadedb/releases/tag/26.7.1
github_commit

commit 8ca396c07e47 (ArcadeData/arcadedb)

Fix landed in ArcadeData/arcadedb commit 8ca396c07e47 — awaiting tagged release

https://github.com/ArcadeData/arcadedb/commit/8ca396c07e471a0b97fee075eeb956b5e24a23be
github Patch Available

Privilege escalation via reader role in /api/v1/command JS scripting language — arbitrary host file read · Advisory · ArcadeData/arcadedb · GitHub

https://github.com/ArcadeData/arcadedb/security/advisories/GHSA-48qw-824m-86pr

Affected Packages

(1 across 1 ecosystem)
Maven(1)
PackageVulnerable rangeFixed inDependents
com.arcadedb:arcadedb-server21.10.1 ... 26.6.1 (57 versions)26.7.1—

Weakness Classification(2)

MITRE Common Weakness Enumeration — the root-cause categories this CVE belongs to.

Data Freshness Timeline

(refreshed 10× in last 7d / 17× in last 30d)

Each row is a source pipeline that fetched or updated this CVE on that date, with what changed. For example, "NVD update" means NVD published or revised its analysis for this CVE; "MITRE cvelistV5" means we ingested or refreshed it from the CNA feed. Most recent first.

  1. 2026-09-25 00:00 UTCEG score recompute
  2. 2026-09-23 21:29 UTCEG score recompute
  3. 2026-09-23 17:54 UTCEPSS rescore
  4. 2026-09-22 19:18 UTCEG score recompute
  5. 2026-09-22 06:05 UTCEG score recompute
  6. 2026-09-21 03:32 UTCEG score recompute
  7. 2026-09-20 20:16 UTCEPSS rescore
  8. 2026-09-20 01:20 UTCEG score recompute
  9. 2026-09-18 23:07 UTCEG score recompute
  10. 2026-09-18 19:28 UTCEPSS rescore
  11. 2026-09-17 20:55 UTCEG score recompute
  12. 2026-09-16 18:43 UTCEG score recompute
  13. 2026-09-16 14:08 UTCEPSS rescore
  14. 2026-09-15 16:32 UTCEG score recompute
  15. 2026-09-15 15:48 UTCEG score recompute
  16. 2026-09-15 15:23 UTCEG score recompute
  17. 2026-09-15 15:22 UTCMITRE cvelistV5first tracked

Related CVEs(same product + same CWE)

Same product

2 shown

Maven:com.arcadedb:arcadedb-server

Frequently asked(5)

What is CVE-2026-65831?
CVE-2026-65831 is a high vulnerability published on September 15, 2026. ArcadeDB is a Multi-Model DBMS. Prior to 26.7.1, a reader-role user can submit POST /api/v1/command/{database} with language: js because PolyglotQueryEngine.command, PolyglotQueryEngine.analyze, and PolyglotQueryEngine.registerFunctions do not enforce database-administrator authorization.…
When was CVE-2026-65831 disclosed?
CVE-2026-65831 was first published in the National Vulnerability Database on September 15, 2026. EchelonGraph re-ingests CVE updates from NVD on a 2-hour cycle, so this page reflects the latest published state.
Is CVE-2026-65831 actively exploited?
CVE-2026-65831 is not currently on CISA's Known Exploited Vulnerabilities catalog. FIRST EPSS estimates a 1% probability of exploitation in the next 30 days, which ranks it in the top 53.7% of all scored CVEs.
What is the CVSS score of CVE-2026-65831?
CVE-2026-65831 has a CVSS v3 base score of 7.7 (NVD).
How do I remediate CVE-2026-65831?
Patch to the fixed version published by the affected vendor. Where vendor advisories exist for CVE-2026-65831, EchelonGraph cross-links them in the Vendor Advisories panel below — those typically contain the canonical remediation steps, fixed version numbers, and any vendor-specific mitigations.

Dependency Blast Radius

See which npm, PyPI, Go, and Maven packages are affected by CVE-2026-65831

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