CVE-2016-3720

jackson-dataformat-xml vulnerable to XML external entity (XXE)

9.8 CriticalFix available

XML external entity (XXE) vulnerability in XmlMapper in the Data format extension for Jackson (aka jackson-dataformat-xml) allows attackers to have unspecified impact via unknown vectors.

Attack profile

How easy it is to exploit

Attack vector: Network
Complexity: Low
Privileges needed: None
User interaction: None

What an attacker can affect

Confidentiality: High
Integrity: High
Availability: High

Exploit likelihood

2.78%Up 1.9 points since Feb 4, 2022

What each source reports

NVD Score used 9.8

XML external entity (XXE) vulnerability in XmlMapper in the Data format extension for Jackson (aka jackson-dataformat-xml) allows attackers to have unspecified impact via unknown vectors.

Record: CVE-2016-3720
CVSS 3.1: 9.8 CriticalCVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H
CVSS 2.0: 7.5 HighAV:N/AC:L/Au:N/C:P/I:P/A:P
Updated: 2026-11-02

CVE List No score

XML external entity (XXE) vulnerability in XmlMapper in the Data format extension for Jackson (aka jackson-dataformat-xml) allows attackers to have unspecified impact via unknown vectors.

Record: CVE-2016-3720
Updated: 2026-11-02

EUVDEUVD-2018-0616 No score

XML external entity (XXE) vulnerability in XmlMapper in the Data format extension for Jackson (aka jackson-dataformat-xml) allows attackers to have unspecified impact via unknown vectors.

Record: EUVD-2018-0616
Updated: 2026-11-03

GitHub AdvisoriesGHSA-hmq6-frv3-4727 9.8

jackson-dataformat-xml vulnerable to XML external entity (XXE)

XML external entity (XXE) vulnerability in XmlMapper in the Data format extension for Jackson (aka jackson-dataformat-xml) allows attackers to have unspecified impact via unknown vectors.

Record: GHSA-hmq6-frv3-4727
CVSS 3.1: 9.8 CriticalCVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H
Weakness: CWE-611
Updated: 2026-11-02

OSV 9.8

XML external entity (XXE) vulnerability in XmlMapper in the Data format extension for Jackson (aka jackson-dataformat-xml) allows attackers to have unspecified impact via unknown vectors.

Record: CVE-2016-3720
CVSS 3.1: 9.8 CriticalCVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H
Updated: 2026-11-02

OSVDEBIAN-CVE-2016-3720 9.8

XML external entity (XXE) vulnerability in XmlMapper in the Data format extension for Jackson (aka jackson-dataformat-xml) allows attackers to have unspecified impact via unknown vectors.

Record: DEBIAN-CVE-2016-3720
CVSS 3.1: 9.8 CriticalCVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H
Updated: 2026-11-02

OSVGHSA-hmq6-frv3-4727 9.8

jackson-dataformat-xml vulnerable to XML external entity (XXE)

XML external entity (XXE) vulnerability in XmlMapper in the Data format extension for Jackson (aka jackson-dataformat-xml) allows attackers to have unspecified impact via unknown vectors.

Record: GHSA-hmq6-frv3-4727
CVSS 3.1: 9.8 CriticalCVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H
Weakness: CWE-611
Updated: 2026-11-02

OSVUBUNTU-CVE-2016-3720 9.8

XML external entity (XXE) vulnerability in XmlMapper in the Data format extension for Jackson (aka jackson-dataformat-xml) allows attackers to have unspecified impact via unknown vectors.

Record: UBUNTU-CVE-2016-3720
CVSS 3.1: 9.8 CriticalCVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H
Updated: 2026-11-02

OSVMGASA-2016-0175 No score

Updated jackson-dataformat-xml packages fix CVE-2016-3720

Updated jackson-dataformat-xml packages fix security vulnerability:

It was reported that XmlMapper in jackson-dataformat-xml is vulnerable to XXE attack ("Improper Restriction of XML External Entity Reference") (CVE-2016-3720).

Record: MGASA-2016-0175
Updated: 2026-11-02

Affected products

Affected packages

Affected packages
Package	Affected	Fixed
`com.fasterxml.jackson.dataformat:jackson-dataformat-xml` Maven	before 2.7.4	2.7.4
`jackson-dataformat-xml` Debian:12	before 2.7.4-1	2.7.4-1
`jackson-dataformat-xml` Debian:13	before 2.7.4-1	2.7.4-1
`jackson-dataformat-xml` Debian:14	before 2.7.4-1	2.7.4-1
`com.fasterxml.jackson.dataformat:jackson-dataformat-xml` Maven	before 2.7.4, plus listed versions 2.0.02.0.0-RC12.0.0-RC22.0.0-RC32.0.1 Show 45 moreShow less 2.0.22.0.32.0.42.0.52.0.62.1.02.1.12.1.22.1.32.1.42.1.52.2.02.2.0-rc12.2.12.2.22.2.32.2.42.3.02.3.0-rc12.3.12.3.22.3.32.3.42.3.52.4.02.4.0-rc22.4.0-rc32.4.12.4.22.4.32.4.42.4.52.4.62.5.02.5.0-rc12.5.12.5.22.5.32.5.42.5.52.6.02.6.0-rc12.6.0-rc22.6.0-rc32.6.0-rc4	2.7.4
`jackson-dataformat-xml` Mageia:5	before 2.4.3-3.1.mga5	2.4.3-3.1.mga5
`jackson-dataformat-xml` Ubuntu:16.04:LTS	All versions, plus listed versions 2.5.3+dfsg-1	None known

History

History
Recorded	Changed	Sources
Nov 3, 2026	aliases	EUVD
Nov 2, 2026	first indexed	CVE List, GitHub Advisories, NVD, OSV

Dates are when Every CVE recorded each change. Upstream dates may differ.

In short

CVE-2016-3720 is a critical vulnerability (CVSS 9.8) in Fasterxml Jackson-dataformat-xml, published May 13, 2016. No source lists public exploit code. EPSS puts the chance of exploitation in the next 30 days at 2.78%, the 86th percentile. Fixed in com.fasterxml.jackson.dataformat:jackson-dataformat-xml 2.7.4.

References

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Left out here: 15 versions. The JSON record has them.