How severe is CVE-2016-6346?

CVE-2016-6346 has a CVSS score of 7.5/10, rated HIGH. Immediate patching is strongly recommended.

Which packages are affected by CVE-2016-6346?

CVE-2016-6346 affects the following packages: org.jboss.resteasy:resteasy-jaxrs (Maven). Ecosystems affected: Maven.

How do I fix CVE-2016-6346?

Update org.jboss.resteasy:resteasy-jaxrs to 3.0.20.Final or later, then make sure no transitive (indirect) dependency still pins the vulnerable range — O3 confirms CVE-2016-6346 is resolved across your whole dependency graph.

How do I detect CVE-2016-6346 in my Maven dependencies?

Scan your dependency tree (package-lock.json, pnpm-lock.yaml, requirements.txt, go.sum, etc.) for org.jboss.resteasy:resteasy-jaxrs, including transitive dependencies — a direct dependency you never call can still pull in a vulnerable version.

How do I mitigate CVE-2016-6346 if there is no patch (or I can't update yet)?

Cap what an attacker can consume: apply request size, rate and timeout limits in front of the affected component, and run it with memory and CPU limits so exhaustion degrades one worker rather than the whole service.

Is CVE-2016-6346 actively exploited in the wild?

No public exploit code has been indexed for CVE-2016-6346 yet. This does not mean the vulnerability cannot be exploited — absence of public exploits does not imply safety. Apply the recommended fix and use O3 Security to monitor your exposure.

What is the EPSS score for CVE-2016-6346?

CVE-2016-6346 has an EPSS (Exploit Prediction Scoring System) score of 5.6%, placing it in the 93th percentile of all CVEs. EPSS is maintained by FIRST.org and estimates the probability that a vulnerability will be exploited in the wild within the next 30 days. This score indicates relatively lower exploitation probability, though the CVSS severity should still guide your patching priority.

When was CVE-2016-6346 published, and has it been updated?

CVE-2016-6346 was published on September 7, 2016 and was last updated on March 15, 2026. Advisory data evolves as severity scores, affected ranges, and exploit intelligence are revised — always check the latest version of the advisory before acting.

☕

☕ Maven

Not in CISA KEV

HIGH severity

CVE-2016-6346 — resteasy-jaxrs

HIGHFix: resteasy/resteasy#1303

CVE-2016-6346 is a high-severity (CVSS 7.5) vulnerability in org.jboss.resteasy:resteasy-jaxrs. A fix is available for org.jboss.resteasy:resteasy-jaxrs — see the affected versions and patch details below.

Denial of service in JBoss resteasy

Also known asGHSA-wxvr-vqfp-9cqw

Published

Sep 7, 2016

Updated

Mar 15, 2026

Affected

1 pkg

Patched

1 / 1

Exploits

None indexed

Exploitation data as of Nov 3, 2026 · OSV.dev, NVD, FIRST.org (EPSS)

EPSS Exploitation Probability

via FIRST.org ↗

5.6%probability of exploitation in next 30 days

Lower Risk0.00%

Lower risk than most CVEs93th percentile — riskier than 93% of all scored CVEsHighest risk

Probability of exploitation in the next 30 days, from FIRST.org EPSS.

How urgent is this, really

Where this sits among everything scored

Real-World Exposure

1 pkg affected

☕org.jboss.resteasy:resteasy-jaxrs

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

RESTEasy enables GZIPInterceptor, which allows remote attackers to cause a denial of service via unspecified vectors.

Affected Packages

1 total 1 fixed

Ecosystem	Package	Vulnerable range	Fix
☕Maven	`org.jboss.resteasy:resteasy-jaxrs`	all versions	3.0.20.Final`org.jboss.resteasy:resteasy-jaxrs:3.0.20.Final`

Affected Products

1 product · 1 configurations

Application

resteasyredhat

all

Detection & mitigation playbook

Open-source dependency

Detect
Scan your dependency tree (package-lock.json, pnpm-lock.yaml, requirements.txt, go.sum, etc.) for org.jboss.resteasy:resteasy-jaxrs, including transitive dependencies — a direct dependency you never call can still pull in a vulnerable version.
Fix
Update org.jboss.resteasy:resteasy-jaxrs to 3.0.20.Final or later, then make sure no transitive (indirect) dependency still pins the vulnerable range — O3 confirms CVE-2016-6346 is resolved across your whole dependency graph.
Workarounds
Cap what an attacker can consume: apply request size, rate and timeout limits in front of the affected component, and run it with memory and CPU limits so exhaustion degrades one worker rather than the whole service.

Fixing This On Your OS

If you run this on a Linux distribution, patch through your package manager against the distro's own security advisory below — it tracks the exact backported fix for your release, which can ship on a different timeline (and sometimes a different severity) than the upstream project.

Red HatModerate

This issue was fixed in EAP 7.1.0, but was not fixed in 7.0.7 On Red Hat Satellite 6.5 this issue is fixed through the candlepin package update (candlepin 2.5.8), which contains a non-vulnerable version of RESTEasy.

Product	Fixed in	Advisory
Red Hat JBoss BPMS 6.4	see advisory	RHSA-2017:1675
Red Hat JBoss BRMS 6.4	see advisory	RHSA-2017:1676
Red Hat JBoss BRMS 7.0	see advisory	RHSA-2018:2143
Red Hat JBoss EAP 7	see advisory	RHSA-2018:0003
Red Hat JBoss Enterprise Application Platform 6.4	see advisory	RHSA-2017:0517
Red Hat JBoss Enterprise Application Platform 6.4 for RHEL 5	`apache-cxf-0:2.7.18-6.SP5_redhat_1.1.ep6.el5`	RHSA-2017:0826
Red Hat JBoss Enterprise Application Platform 6.4 for RHEL 6	`apache-cxf-0:2.7.18-6.SP5_redhat_1.1.ep6.el6`	RHSA-2017:0827
Red Hat JBoss Enterprise Application Platform 6.4 for RHEL 6	`jboss-ec2-eap-0:7.5.14-2.Final_redhat_2.ep6.el6`	RHSA-2017:0829

Frequently Asked Questions

RESTEasy enables GZIPInterceptor, which allows remote attackers to cause a denial of service via unspecified vectors.

O3 Security · Impact-Aware SCA

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