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No exploitation reportedFix available

CVE-2016-6347

No exploitation reported by the sources we read.

  • Published2017-04-20
  • Fixed in3.1.0.CR1 · 3.0.20.Final
  • WeaknessCWE-79

Am I affected?

With a domain, we read the version its public headers and pages expose. A distribution build can carry the fix under an older number.

Description

Cross-site scripting (XSS) vulnerability in the default exception handler in RESTEasy allows remote attackers to inject arbitrary web script or HTML via unspecified vectors.

Timeline

dates in UTC
  1. 2017-04-2017:59CVE publishedNVD

Versions per branch

OSV · NVD
resteasy-client
BranchAffectedFixed in
3.1≥ 3.1.0.Beta1, < 3.1.0.CR13.1.0.CR1
3.0< 3.0.20.Final3.0.20.Final
Redhat resteasy
BranchAffectedFixed in
—all versionsno fix published

as publishedRanges as NVD and OSV publish them; a distribution’s build can be fixed under an older number.

Distribution builds and vendor advisories

Packages from OSV.dev and products from the vendors' CSAF advisories.

version not verifiedVersions not verified: read as OSV.dev and the vendors publish them, not checked against each vendor's release list.

Packages

  • resteasyUbuntu:Pro:16.04:LTSall versions · fixed in 3.0.6-3ubuntu0.1~esm1
  • resteasy3.0Ubuntu:Pro:20.04:LTSall versions · fixed in 3.0.26-1ubuntu0.1~esm1
  • resteasy3.0Ubuntu:Pro:18.04:LTSall versions · fixed in 3.0.26-1~18.04.1~esm1
  • resteasy3.0Ubuntu:24.04:LTSall versions · fixed in 3.0.26-6ubuntu0.24.04.1
  • resteasy3.0Ubuntu:22.04:LTSall versions · fixed in 3.0.26-3ubuntu0.1
  • resteasy3.0Debian:14all versions · fixed in 3.0.26-1
  • resteasy3.0Debian:13all versions · fixed in 3.0.26-1
  • resteasy3.0Debian:12all versions · fixed in 3.0.26-1

Vendor advisories

  • CVE-2016-6347 Red Hat Product Security22 known affected

    RESTEasy: Use of the default exception handler in RESTEasy can lead to reflected XSS attack

    resteasy-base as a component of Red Hat Enterprise Linux 7 · resteasy-base-atom-provider as a component of Red Hat Enterprise Linux 7 · resteasy-base-client as a component of Red Hat Enterprise Linux 7 · +19 more

Full record on NVD

Fix

  1. Update resteasy-client to 3.1.0.CR1 · 3.0.20.Final
  2. No fix available, says the vendor Red Hat Product Security CVE-2016-6347 · 3 productsAffected
  3. No fix planned, says the vendor Red Hat Product Security CVE-2016-6347 · 19 productsWill not fix

Detection

Nuclei template
none so far
ProjectDiscovery
Exploit-DB
no entry
Exploit-DB
Proof of concept
Metasploit modules
none listed
Metasploit Framework

Sources

  • NVDCVSS 3.06.1read 2026-10-23
  • NVDCVSS 2.04.3read 2026-10-23
  • NVDweakness (CWE)CWE-79read 2026-10-23
  • FIRST EPSSEPSS score1.9 %2026-11-12
  • OSVaffected packages—
  • GitHub AdvisoriesadvisoryMODERATE2022-07-06

Identifiers

Technical details

CVSS v3 Vector
CVSS:3.0/AV:N/AC:L/PR:N/UI:R/S:C/C:L/I:L/A:N
Published
2017-04-20
Last Modified
2026-06-17
NVD status
Modified
GitHub Advisory
GHSA-r346-rmrg-qpgh

Frequently asked questions

What is CVE-2016-6347?

Cross-site scripting (XSS) vulnerability in the default exception handler in RESTEasy allows remote attackers to inject arbitrary web script or HTML via unspecified vectors.

Is CVE-2016-6347 actively exploited?

Active exploitation of CVE-2016-6347 has not been confirmed. Its EPSS score was 1.9% on 2026-11-12, the estimated probability of exploitation in the next 30 days.

What is the CVSS score for CVE-2016-6347?

CVE-2016-6347 has a CVSS v3 base score of 6.1 (MEDIUM severity), with vector string CVSS:3.0/AV:N/AC:L/PR:N/UI:R/S:C/C:L/I:L/A:N.

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