CVE-2026-75840

HIGHPre-NVD 7.57.5—
EchelonGraph scoreHIGH confidence

Score 7.5 from GitHub Security Advisory (severity: HIGH) published 2026-08-18. a secondary CVSS source baseline 7.5; sources differ by 0.0.

Triggered by: GitHub Security Advisory CVSS
Sources: epss, ghsa, secondary
Trending — 4 sources updated this weekElevated
7.5EG
EchelonGraph verdictPlan a fixSerious severity, but no confirmed exploitation yet.
  • High severity, but no confirmed exploitation yet
CISA-KEV: Not listedEPSS PROB: 0%CVSS: 7.5Exploit: Elevated riskExposed: 0

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

ArcadeDB before 26.8.1 contains an arbitrary file read vulnerability in the GraalVM JavaScript sandbox allowlist enforcement, which uses unescaped regular expressions to validate package names. Attackers with trigger creation privileges can use Java.type() to access java.util.zip.ZipFile or java.util.jar.JarFile classes and read arbitrary files on the host system as the ArcadeDB server process.

CVSS v3
7.5
EG Score
7.5(high)
EG Risk
65(Attend)
EG Risk 65/100SSVC: Attend

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
Severity75% × 45%
Exploitation40% × 40%
Automatability100% × 15%
Action: Remediate soon — notable exploitation risk.
EPSS PROB
0%
EPSS %ILE
24%
KEV
Not listed

Published

August 18, 2026

Last Modified

August 18, 2026

Advisory Details (2)

Auto-updated Aug 18, 2026
🔬 Proof of concept available. Patch available. Sources: github.
generic

ArcadeDB before 26.8.1 Arbitrary File Read via Unescaped Regex | Advisories | VulnCheck

https://www.vulncheck.com/advisories/arcadedb-before-arbitrary-file-read-via-unescaped-regex
github Patch Available🟡 PoC Available

Unescaped Regex in JS Sandbox Package Allowlist Enables Arbitrary Host File Read via Triggers · Advisory · ArcadeData/arcadedb · GitHub

https://github.com/ArcadeData/arcadedb/security/advisories/GHSA-wx28-2265-f788

Vendor Advisories for CVE-2026-75840(1)

These vendors published their own advisory mentioning this CVE — often with vendor-specific remediation steps + affected product lists not in NVD.

Weakness Classification(1)

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

Data Freshness Timeline

(refreshed 16× in last 7d / 16× 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. 2026-08-20 22:56 UTCEPSS rescore
  2. 2026-08-20 15:38 UTCGHSA enrichment
  3. 2026-08-20 03:36 UTCEG score recompute
  4. 2026-08-20 03:36 UTCGHSA enrichment
  5. 2026-08-19 17:04 UTCEPSS rescore
  6. 2026-08-19 15:32 UTCGHSA enrichment
  7. 2026-08-19 03:25 UTCEG score recompute
  8. 2026-08-19 03:25 UTCGHSA enrichment
  9. 2026-08-18 15:22 UTCEG score recompute
  10. 2026-08-18 15:22 UTCGHSA enrichment
  11. 2026-08-18 15:15 UTCEG score recompute
  12. 2026-08-18 15:15 UTCGHSA enrichment
  13. 2026-08-18 12:34 UTCEG score recompute
  14. 2026-08-18 12:34 UTCGHSA enrichment
  15. 2026-08-18 11:29 UTCEG score recompute
  16. 2026-08-18 11:29 UTCMITRE cvelistV5first tracked

Frequently asked(5)

What is CVE-2026-75840?
CVE-2026-75840 is a high vulnerability published on August 18, 2026. ArcadeDB before 26.8.1 contains an arbitrary file read vulnerability in the GraalVM JavaScript sandbox allowlist enforcement, which uses unescaped regular expressions to validate package names. Attackers with trigger creation privileges can use Java.type() to access java.util.zip.ZipFile or…
When was CVE-2026-75840 disclosed?
CVE-2026-75840 was first published in the National Vulnerability Database on August 18, 2026. EchelonGraph re-ingests CVE updates from NVD on a 2-hour cycle, so this page reflects the latest published state.
Is CVE-2026-75840 actively exploited?
CVE-2026-75840 is not currently on CISA's Known Exploited Vulnerabilities catalog. FIRST EPSS estimates a 0% probability of exploitation in the next 30 days, which ranks it in the top 75.7% of all scored CVEs.
What is the CVSS score of CVE-2026-75840?
CVE-2026-75840 has a CVSS v3 base score of 7.5 (NVD).
How do I remediate CVE-2026-75840?
Patch to the fixed version published by the affected vendor. Where vendor advisories exist for CVE-2026-75840, 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

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