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CVE-2021-42767

29
FAUCET Score

CVE-2021-42767 is a critical directory traversal vulnerability affecting the apoc plugins in Neo4j Graph database versions prior to 4.4.0.1. This flaw allows unauthenticated attackers to read arbitrary local files and, in some cases, create new files on the affected system. With a CVSS score of 9.1 (CRITICAL), it presents a high risk due to its network-based attack vector, low attack complexity, and high impact on confidentiality and integrity. Despite its severity, there is currently no public exploit code (Metasploit, Nuclei, ExploitDB) available, and it is not listed on CISA's KEV catalog, indicating no known active exploitation. Community discussion and media coverage for this CVE are also minimal.

Impacted Technologies

VendorProductVersion(s)CPE
< 3.5.0.17CPE matchmatch criteria
cpe:2.3:a:neo4j:awesome_procedures:*:*:*:*:*:neo4j:*:*
>= 4.2.0.0, < 4.2.10CPE matchmatch criteria
cpe:2.3:a:neo4j:awesome_procedures:*:*:*:*:*:neo4j:*:*
>= 4.3.0.0, < 4.3.0.4CPE matchmatch criteria
cpe:2.3:a:neo4j:awesome_procedures:*:*:*:*:*:neo4j:*:*
>= 4.4.0.0, < 4.4.0.1CPE matchmatch criteria
cpe:2.3:a:neo4j:awesome_procedures:*:*:*:*:*:neo4j:*:*

CVSS Data

CVSS version used by this source: 3.1

9.1CRITICAL

CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:N

Attack Vector
NETWORK
Attack Complexity
LOW
Privileges Required
NONE
User Interaction
NONE
Scope
UNCHANGED
Confidentiality Impact
HIGH
Integrity Impact
HIGH
Availability Impact
NONE
Exploitability Score
3.9
Impact Score
5.2
CvssVersion
3.1

Exploit Intelligence

EPSS Score
1.53%
Probability of exploitation in next 30 days
EPSS Percentile
72.1%
Percentile rank of EPSS score among Peer Group
As of 2026-07-27
Model: v2026.06.15
This CVE's current EPSS score of 0.0153 is in the 59th percentile among its peer group of 36,862 CVEs.

Social Chatter

The average CVE in this peer group has 0.0 Twitter, 0.1 Reddit, 0.3 Bluesky, 0.3 Mastodon, and 2.4 GitHub mentions.

Media Mentions

No media coverage found for this CVE.

The average CVE in this peer group has 0.3 InfoSec Media, 0.0 Vendor Blog, and 0.0 Security Researcher mentions.

Remediation

Patch Available

Vendor Patches (4)

mavenpatch availablevia ghsa
Product: org.neo4j.procedure:apocFixed in: 3.5.17
mavenpatch availablevia ghsa
Product: org.neo4j.procedure:apocFixed in: 4.2.10
mavenpatch availablevia ghsa
Product: org.neo4j.procedure:apocFixed in: 4.3.0.4
mavenpatch availablevia ghsa
Product: org.neo4j.procedure:apocFixed in: 4.4.0.1

Vendor Advisories (1)

mavenGHSA-4mpj-488r-vh6mcritical

Neo4j Graph Database vulnerable to Path Traversal

Feb 1, 2022

References

github.com / neo4j-contrib/neo4j-apoc-procedures/security/advisories/GHSA-4mpj-488r-vh6m
Third Party Advisory
neo4j.com
ProductVendor Advisory