Jansson 2.7 and earlier allows context-dependent attackers to cause a denial of service…
Priority MEDIUM 62CWE-674Published · Updated
Key facts
- Attack vector
- Network
- Privileges required
- None
- User interaction
- Required
- Attack complexity
- Low
- Impact type
- Denial of service
- Confidentiality · integrity · availability
- None · None · High
- Fix status
- No fix listed
Attack profile from CVSS 3.1 · CISA ADP. Fix status from CNA and Red Hat. Impact type from CWE-674.
Summary
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.
Why it matters now
Exploitation Proof of concept CISA SSVC · not in CISA KEV
EPSS 0.01894 79th percentileScored 2026-11-07
Fix No fix listed No fixed version in the sources yet
SSVC decision points
CISA ADP · SSVC 2.0.3
- Exploitation
- Poc
- Automatable
- No
- Technical impact
- Partial
The decision (Track, Attend, Act) also depends on your mission and well-being impact; see CISA's SSVC guide.
Affected products
| Vendor | Product | Affected versions | Fixed in | Status | Source |
|---|---|---|---|---|---|
| — | — | all versions | — | No fix listed | CNA |
- — Vendor— Affected all versions Fixed in — No fix listed CNA
CPE configurations NVD · 1
| CPE | Versions | Role | Vendor |
|---|---|---|---|
| cpe:2.3:a:jansson_project:jansson:*:*:*:*:*:*:*:* | up to 2.7 | Vulnerable | Jansson Project |
- cpe:2.3:a:jansson_project:jansson:*:*:*:*:*:*:*:* Versions up to 2.7 Vulnerable ·Jansson Project
Remediation
No fixed version listed by the sources yet.
Vendor assessments
Red Hat
Red Hat rating: Moderate. Red Hat's page for this CVE →
| Product | Status | Plan or fix |
|---|---|---|
| Red Hat Enterprise Linux 7 | Affected | No fix yet |
Timeline
- 2026-10-02 Threatist record created from CVE-2016-4425
- 2026-10-03 Alias added: GHSA-rf62-m3fm-w623
References
Advisory 1
Other 4
- [oss-security] 20160503 Re: CVE Request: Jansson: stack exhaustion parsing a JSON file
- [oss-security] 20160501 CVE Request: Jansson: stack exhaustion parsing a JSON file
- [oss-security] 20160502 Re: CVE Request: Jansson: stack exhaustion parsing a JSON file
- https://github.com/akheron/jansson/pull/284/commits/64ce0ad3731ebd77e02897b07920eadd0e2cc318
More Jansson Project Jansson vulnerabilities
- TI-2020-18608 An issue was discovered in Jansson through 2.13.1. CVSS 3.1HIGH 7.5
- TI-2013-05357 Jansson, possibly 2.4 and earlier, does not restrict the ability to trigger hash… CVSS 2.0MEDIUM 5.0
Sources
- CVE-2016-4425 · CVE Program
- CVE-2016-4425 · NVD
- FIRST EPSS
- GHSA-rf62-m3fm-w623 · GitHub Advisory Database · CC BY 4.0
- CVE-2016-4425 · Red Hat security data · CC BY 4.0
This product uses the NVD API but is not endorsed or certified by the NVD. Sources and licences