CVE-2018-1000820
XML External Entity (XXE) vulnerability in neo4j.procedure:apoc
neo4j-contrib neo4j-apoc-procedures version before commit 45bc09c contains a XML External Entity (XXE) vulnerability in XML Parser that can result in Disclosure of confidential data, denial of service, SSRF, port scanning. This vulnerability appears to have been fixed in after commit 45bc09c.
Attack profile
How easy it is to exploit
- Attack vector
- Network
- Complexity
- Low
- Privileges needed
- None
- User interaction
- None
What an attacker can affect
- Confidentiality
- High
- Integrity
- High
- Availability
- High
Exploit likelihood
What each source reports
NVD Score used
neo4j-contrib neo4j-apoc-procedures version before commit 45bc09c contains a XML External Entity (XXE) vulnerability in XML Parser that can result in Disclosure of confidential data, denial of service, SSRF, port scanning. This vulnerability appears to have been fixed in after commit 45bc09c.
- Record
CVE-2018-1000820- CVSS 3.0
- 10.0 Critical
CVSS:3.0/AV:N/AC:L/PR:N/UI:N/S:C/C:H/I:H/A:H - CVSS 2.0
- 7.5 High
AV:N/AC:L/Au:N/C:P/I:P/A:P - Weakness
- CWE-611
- Updated
- 2026-11-02
CVE List No score
neo4j-contrib neo4j-apoc-procedures version before commit 45bc09c contains a XML External Entity (XXE) vulnerability in XML Parser that can result in Disclosure of confidential data, denial of service, SSRF, port scanning. This vulnerability appears to have been fixed in after commit 45bc09c.
- Record
CVE-2018-1000820- Updated
- 2026-11-02
EUVDEUVD-2018-0819 No score
neo4j-contrib neo4j-apoc-procedures version before commit 45bc09c contains a XML External Entity (XXE) vulnerability in XML Parser that can result in Disclosure of confidential data, denial of service, SSRF, port scanning. This vulnerability appears to have been fixed in after commit 45bc09c.
- Record
EUVD-2018-0819- Updated
- 2026-11-03
GitHub AdvisoriesGHSA-r2pp-x4mm-4999
XML External Entity (XXE) vulnerability in neo4j.procedure:apoc
neo4j-contrib neo4j-apoc-procedures version before commit 45bc09c contains a XML External Entity (XXE) vulnerability in XML Parser that can result in Disclosure of confidential data, denial of service, SSRF, port scanning. This vulnerability appears to have been fixed in after commit 45bc09c.
- Record
GHSA-r2pp-x4mm-4999- CVSS 3.0
- 10.0 Critical
CVSS:3.0/AV:N/AC:L/PR:N/UI:N/S:C/C:H/I:H/A:H - Weakness
- CWE-611
- Updated
- 2026-11-02
OSV
neo4j-contrib neo4j-apoc-procedures version before commit 45bc09c contains a XML External Entity (XXE) vulnerability in XML Parser that can result in Disclosure of confidential data, denial of service, SSRF, port scanning. This vulnerability appears to have been fixed in after commit 45bc09c.
- Record
CVE-2018-1000820- CVSS 3.0
- 10.0 Critical
CVSS:3.0/AV:N/AC:L/PR:N/UI:N/S:C/C:H/I:H/A:H - Updated
- 2026-11-02
OSVGHSA-r2pp-x4mm-4999
XML External Entity (XXE) vulnerability in neo4j.procedure:apoc
neo4j-contrib neo4j-apoc-procedures version before commit 45bc09c contains a XML External Entity (XXE) vulnerability in XML Parser that can result in Disclosure of confidential data, denial of service, SSRF, port scanning. This vulnerability appears to have been fixed in after commit 45bc09c.
- Record
GHSA-r2pp-x4mm-4999- CVSS 3.0
- 10.0 Critical
CVSS:3.0/AV:N/AC:L/PR:N/UI:N/S:C/C:H/I:H/A:H - Weakness
- CWE-611
- Updated
- 2026-11-02
Affected products
Affected packages
| Package | Affected | Fixed |
|---|---|---|
org.neo4j.procedure:apocMaven |
through 3.4.0.3 | 3.4.0.4 |
org.neo4j.procedure:apocMaven |
before 3.4.0.4, plus listed versions 1.0.01.0.0-RC11.1.03.0.4.13.0.4.2 Show 21 moreShow less3.0.8.43.0.8.53.1.0.23.1.0.33.1.0.43.1.0.53.1.2.53.1.3.73.1.3.83.1.3.93.2.0.13.2.0.43.2.3.53.2.3.63.3.0.13.3.0.23.3.0.33.3.0.43.4.0.13.4.0.23.4.0.3 |
3.4.0.4 |
History
| Recorded | Changed | Sources |
|---|---|---|
| aliases | EUVD | |
| first indexed | CVE List, GitHub Advisories, NVD, OSV |
Dates are when Every CVE recorded each change. Upstream dates may differ.
In short
CVE-2018-1000820 is a critical vulnerability (CVSS 10.0) in Neo4j Awesome Procedures On Cyper, published December 20, 2018. No source lists public exploit code. EPSS puts the chance of exploitation in the next 30 days at 1.87%, the 79th percentile. Fixed in org.neo4j.procedure:apoc 3.4.0.4.