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Advisory record · GHSA-xw5h-cmh3-8j6j

Apache CXF has Improper Restriction of XML External Entity Reference

CVSS 9.8 CriticalCriticalEPSS 0.0053 · 45th percentile

Critical, because:

  • CVSS score 9.8: 9.0 or more.

How we decide what’s critical

Published by the GitHub Advisory Database at 12 Jun 2026, 12:31 UTC. agentprime has not analysed this yet, so whether it affects any app is not known.

PackageEcosystemAffectedFixed in
org.apache.cxf:cxf-coreMaven>=4.2.0, <4.2.2 || >=4.0.0, <4.1.7 || <3.6.124.2.2, 4.1.7, 3.6.12
Identifiers
GHSA-xw5h-cmh3-8j6j · CVE-2026-49875
Weakness (CWE)
CWE-611
Tags
Published
12 Jun 2026
Updated
26 Oct 2026

Machine-written summary

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

Apache CXF's cxf-core package, versions from 4.2.0 before 4.2.2, from 4.0.0 before 4.1.7, and before 3.6.12, is vulnerable to XML external entity resolution. The source gives few details on the exact trigger or what an attacker gains, but the advisory is rated critical. Upgrade cxf-core to 4.2.2, 4.1.7, or 3.6.12, depending on your release line.

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
9.8 Critical 3.1 CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H GitHub Advisory Database
  • CISA KEV Not listed.
  • EPSS 0.0053, the 45th percentile, on 5 Nov 2026: FIRST’s estimate of the chance of exploitation in the next 30 days.

Timeline

  1. 31 Oct 2026, 14:16 UTC First seen by agentprime
  2. 31 Oct 2026, 14:16 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.