CVE-2016-4425

Jansson 2.7 and earlier allows context-dependent attackers to cause a denial of service (deep...

7.5 HighFix available

Jansson 2.7 and earlier allows context-dependent attackers to cause a denial of service (deep recursion, stack consumption, and crash) via crafted JSON data.

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: None
Integrity: None
Availability: High

Exploit likelihood

1.89%Up 0.8 points since Feb 4, 2022

What each source reports

CVE List 6.5

Jansson 2.7 and earlier allows context-dependent attackers to cause a denial of service (deep recursion, stack consumption, and crash) via crafted JSON data.

Record: CVE-2016-4425
CVSS 3.1: 6.5 MediumCVSS:3.1/AV:N/AC:L/PR:N/UI:R/S:U/C:N/I:N/A:H
Weakness: CWE-674
Updated: 2026-11-02

EUVDEUVD-2016-5424 6.5

Jansson 2.7 and earlier allows context-dependent attackers to cause a denial of service (deep recursion, stack consumption, and crash) via crafted JSON data.

Record: EUVD-2016-5424
CVSS 3.1: 6.5 MediumCVSS:3.1/AV:N/AC:L/PR:N/UI:R/S:U/C:N/I:N/A:H
Updated: 2026-11-02

GitHub AdvisoriesGHSA-rf62-m3fm-w623 7.5

Jansson 2.7 and earlier allows context-dependent attackers to cause a denial of service (deep...

Jansson 2.7 and earlier allows context-dependent attackers to cause a denial of service (deep recursion, stack consumption, and crash) via crafted JSON data.

Record: GHSA-rf62-m3fm-w623
CVSS 3.0: 7.5 HighCVSS:3.0/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H
Weakness: CWE-20, CWE-674
Updated: 2026-11-02

NVD 6.5

Jansson 2.7 and earlier allows context-dependent attackers to cause a denial of service (deep recursion, stack consumption, and crash) via crafted JSON data.

Record: CVE-2016-4425
CVSS 3.1: 6.5 MediumCVSS:3.1/AV:N/AC:L/PR:N/UI:R/S:U/C:N/I:N/A:H
CVSS 3.0: 7.5 HighCVSS:3.0/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H
CVSS 2.0: 5.0 MediumAV:N/AC:L/Au:N/C:N/I:N/A:P
Weakness: CWE-20, CWE-674
Updated: 2026-11-02

OSV 7.5

Jansson 2.7 and earlier allows context-dependent attackers to cause a denial of service (deep recursion, stack consumption, and crash) via crafted JSON data.

Record: CVE-2016-4425
CVSS 3.0: 7.5 HighCVSS:3.0/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H
Updated: 2026-11-02

OSVDEBIAN-CVE-2016-4425 7.5

Jansson 2.7 and earlier allows context-dependent attackers to cause a denial of service (deep recursion, stack consumption, and crash) via crafted JSON data.

Record: DEBIAN-CVE-2016-4425
CVSS 3.0: 7.5 HighCVSS:3.0/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H
Updated: 2026-11-02

OSVUBUNTU-CVE-2016-4425 6.5

Jansson 2.7 and earlier allows context-dependent attackers to cause a denial of service (deep recursion, stack consumption, and crash) via crafted JSON data.

Record: UBUNTU-CVE-2016-4425
CVSS 3.1: 6.5 MediumCVSS:3.1/AV:N/AC:L/PR:N/UI:R/S:U/C:N/I:N/A:H
CVSS 3.0: 7.5 HighCVSS:3.0/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H
Updated: 2026-11-02

OSVMGASA-2016-0198 No score

Updated jansson packages fix CVE-2016-4425

Updated jansson packages fix security vulnerability:

Gustavo Grieco discovered that jansson did not limit the recursion depth when parsing JSON arrays and objects. This could allow remote attackers to cause a denial of service (crash) via stack exhaustion, using crafted JSON data (CVE-2016-4425).

Record: MGASA-2016-0198
Updated: 2026-11-02

Affected products

jansson project jansson

Affected packages

Affected packages
Package	Affected	Fixed
`jansson` Debian:12	before 2.7-5	2.7-5
`jansson` Debian:13	before 2.7-5	2.7-5
`jansson` Debian:14	before 2.7-5	2.7-5
`jansson` Debian:7	before 2.3.1-2+deb7u1, plus listed versions 2.3.1-2	2.3.1-2+deb7u1
`jansson` Debian:8	before 2.7-1+deb8u1, plus listed versions 2.7-1	2.7-1+deb8u1
`jansson` Mageia:5	before 2.4-4.1.mga5	2.4-4.1.mga5
`jansson` Ubuntu:14.04:LTS	before 2.5-2ubuntu0.1, plus listed versions 2.4-12.5-12.5-1ubuntu12.5-2	2.5-2ubuntu0.1
`jansson` Ubuntu:16.04:LTS	before 2.7-3ubuntu0.1, plus listed versions 2.7-1ubuntu12.7-3	2.7-3ubuntu0.1

History

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

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

In short

CVE-2016-4425 is a high vulnerability (CVSS 7.5) in Jansson Project Jansson, published May 13, 2016. No source lists public exploit code. EPSS puts the chance of exploitation in the next 30 days at 1.89%, the 79th percentile. Fixed in jansson 2.7-5.

References

Show 9 moreShow less