CVE-2021-42767

CRITICALNVD 9.19.1—
EchelonGraph scoreMEDIUM confidence

This critical-severity CVE scores 9.1 under NVD CVSS v3. EPSS exploit probability: 1.5%, top 28% 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, nvd
Trending — 3 sources updated this week
9.1
EchelonGraph verdictPlan a fixSerious severity, but no confirmed exploitation yet.
  • High severity, but no confirmed exploitation yet
CISA-KEV: Not listedEPSS: 2%CVSS: 9.1Exploit: NoneExposed: 0

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

A directory traversal vulnerability in the apoc plugins in Neo4J Graph database before 4.4.0.1 allows attackers to read local files, and sometimes create local files. This is fixed in 3.5.17, 4.2.10, 4.3.0.4, and 4.4.0.1.

CVSS v3
9.1
EG Score
9.1(medium)
EG Risk
46(Track)
EG Risk 46/100SSVC: 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
Severity91% × 45%
Exploitation2% × 40%
Automatability30% × 15%
Action: Routine — remediate on your standard cadence.
EPSS
72.1%
KEV
Not listed

Published

March 1, 2022

Last Modified

November 21, 2024

Advisory Details (2)

Auto-updated Jul 19, 2026
🔬 Proof of concept available. Patch available. Sources: github.
generic

Neo4j Graph Intelligence Platform

https://neo4j.com
github Patch Available🟡 PoC Available

Path traversal in several apoc.* functions · Advisory · neo4j-contrib/neo4j-apoc-procedures · GitHub

https://github.com/neo4j-contrib/neo4j-apoc-procedures/security/advisories/GHSA-4mpj-488r-vh6m

Affected Packages

(1 across 1 ecosystem)
Maven(1)
PackageVulnerable rangeFixed inDependents
org.neo4j.procedure:apoc4.4.0.04.4.0.1—

Weakness Classification(1)

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

Data Freshness Timeline

(refreshed 13× in last 7d / 51× 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.

Showing the most recent 100 of 107 total refreshes for this CVE.

  1. 2026-07-23 02:04 UTCEG score recompute
  2. 2026-07-22 22:51 UTCEG score recompute
  3. 2026-07-22 14:06 UTCEPSS rescore
  4. 2026-07-21 15:22 UTCEPSS rescore
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  11. 2026-07-17 21:29 UTCOSV refresh
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  1. 2026-07-07 13:43 UTCEPSS rescore
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  45. 2026-06-12 23:10 UTCEPSS rescore
  46. 2026-06-12 08:06 UTCOSV refresh
  47. 2026-06-11 13:58 UTCEPSS rescore
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  49. 2026-06-10 22:16 UTCEPSS rescore
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  74. 2026-05-27 13:39 UTCEPSS rescore
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Related CVEs(same CWE)

Frequently asked(5)

What is CVE-2021-42767?
CVE-2021-42767 is a critical vulnerability published on March 1, 2022. A directory traversal vulnerability in the apoc plugins in Neo4J Graph database before 4.4.0.1 allows attackers to read local files, and sometimes create local files. This is fixed in 3.5.17, 4.2.10, 4.3.0.4, and 4.4.0.1.
When was CVE-2021-42767 disclosed?
CVE-2021-42767 was first published in the National Vulnerability Database on March 1, 2022, with the most recent update on November 21, 2024. EchelonGraph re-ingests CVE updates from NVD on a 2-hour cycle, so this page reflects the latest published state.
Is CVE-2021-42767 actively exploited?
CVE-2021-42767 is not currently on CISA's Known Exploited Vulnerabilities catalog. FIRST EPSS estimates a 72.1% percentile likelihood of exploitation in the next 30 days — higher percentiles indicate greater predicted risk.
What is the CVSS score of CVE-2021-42767?
CVE-2021-42767 has a CVSS v3 base score of 9.1 (NVD).
How do I remediate CVE-2021-42767?
Patch to the fixed version published by the affected vendor. Where vendor advisories exist for CVE-2021-42767, 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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