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Advisory record · GHSA-6wxg-wh7f-rqpr

XML External Entity (XXE) vulnerability in apoc.import.graphml

CVSS 5.9 MediumEPSS 0.0089 · 59th percentile

Published by the GitHub Advisory Database at 16 Feb 2023, 20:46 UTC. agentprime has not analysed this yet, so whether it affects any app is not known.

PackageEcosystemAffectedFixed in
org.neo4j.procedure:apoc-coreMaven>=5.0.0, <5.5.0 || <4.4.0.145.5.0, 4.4.0.14
Identifiers
GHSA-6wxg-wh7f-rqpr · CVE-2023-23926
Weakness (CWE)
CWE-611
Tags
Published
16 Feb 2023
Updated
10 Sept 2026

Machine-written summary

Summary written by Claude Haiku from the source advisory. Not reviewed by a person.

The apoc-core Maven package (org.neo4j.procedure), versions from 5.0.0 before 5.5.0 and versions before 4.4.0.14, has an XML External Entity vulnerability in the apoc.import.graphml procedure. An attacker who can run this procedure can read local files and cause the server to crash with malformed XML. Upgrade to version 5.5.0 or 4.4.0.14. If you cannot upgrade, restrict which procedures can run using the Neo4j procedure allowlist setting.

Written 2 Nov 2026.

Not analysed yet

We haven’t published our analysis of this Advisory yet. Once a person has reviewed it, this page will say what’s vulnerable, what has to be true for your app to be affected, and how to check.

Severity and exploitation

ScoreRatingCVSSVectorSource
5.9 Medium 3.1 CVSS:3.1/AV:N/AC:H/PR:L/UI:N/S:U/C:L/I:N/A:H CNA (GitHub_M)
  • CISA KEV Not listed.
  • EPSS 0.0089, the 59th percentile, on 10 Nov 2026: FIRST’s estimate of the chance of exploitation in the next 30 days.

Timeline

  1. 31 Oct 2026, 14:18 UTC First seen by agentprime
  2. 31 Oct 2026, 14:18 UTC Confirmed by OSV

Sources

Facts on this page come from the GitHub Advisory Database (CC-BY 4.0), OSV and the other sources listed, as published. We don’t reproduce full advisory descriptions, which can contain exploit code.