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Maven

GHSA-x7xf-253v-x3w8

HIGH

Improper Restriction of XML External Entity Reference in Apache CXF JAX-RS

Also known asCVE-2016-8739
Published
May 13, 2022
Updated
Feb 22, 2024
Affected
2 pkgs
Patched
2 / 2
Exploits
None indexed

EPSS Exploitation Probability

via FIRST.org ↗
7.3%probability of exploitation in next 30 days
Lower Risk94th percentile+4.64%
1.28%3.76%6.23%8.71%2.7%7.3%Dec 25Apr 26Jun 26

EPSS (Exploit Prediction Scoring System) is a daily probability model maintained by FIRST.org. It estimates the likelihood a CVE will be exploited in production environments within the next 30 days, derived from real-world threat intelligence signals.

Blast Radius

2 pkgs affected
org.apache.cxf:cxf-coreorg.apache.cxf:cxf-core

Real-time download stats are indexed for npm and PyPI packages. This vulnerability affects Maven packages — download data is not available via public APIs for these ecosystems.

Description

The JAX-RS module in Apache CXF prior to 3.0.12 and 3.1.x prior to 3.1.9 provides a number of Atom JAX-RS MessageBodyReaders. These readers use Apache Abdera Parser which expands XML entities by default which represents a major XXE risk.

Affected Packages

2 total 2 fixed
EcosystemPackageVulnerable rangeFix
Mavenorg.apache.cxf:cxf-coreall versions3.0.12
Mavenorg.apache.cxf:cxf-core3.1.0&&< 3.1.93.1.9

Detection & mitigation playbook

Open-source dependency
  1. Detect

    Scan your dependency tree (package-lock.json, pnpm-lock.yaml, requirements.txt, go.sum, etc.) for org.apache.cxf:cxf-core. O3's reachability analysis confirms whether the vulnerable code path is actually invoked in your application, so you act on real exposure instead of every transitive match.

  2. Fix

    Update org.apache.cxf:cxf-core to 3.0.12 or later, then make sure no transitive (indirect) dependency still pins the vulnerable range — O3 confirms GHSA-x7xf-253v-x3w8 is resolved across your whole dependency graph.

  3. Workarounds

    If you can't upgrade right away: gate or disable the affected feature, validate untrusted input at the boundary, and avoid passing attacker-controlled data into the vulnerable path. O3's runtime protection blocks exploitation in production as an interim safeguard until the upgrade lands.

  4. How O3 protects you

    O3 pinpoints whether GHSA-x7xf-253v-x3w8 is reachable in your code and exactly where to fix it, then blocks exploitation in production at runtime until the patched version is deployed.

Tailored to GHSA-x7xf-253v-x3w8. Runtime protection reduces exposure until a permanent patch is applied and verified — it complements patching, it doesn't replace it.

Frequently Asked Questions

The JAX-RS module in Apache CXF prior to 3.0.12 and 3.1.x prior to 3.1.9 provides a number of Atom JAX-RS MessageBodyReaders. These readers use Apache Abdera Parser which expands XML entities by default which represents a major XXE risk.
O3 Security · Impact-Aware SCA

Is GHSA-x7xf-253v-x3w8 in your dependencies?

O3 detects GHSA-x7xf-253v-x3w8 across Maven dependencies and uses function-level reachability to confirm whether the vulnerable code path is actually reachable — not just present. No false positives.