CVE catalog
CVE-2013-6401
jansson: CVE-2013-6401
- Severity
- Medium
- Published
- Source
- [NVD] · [CVE record]
- EPSS
- 2.01% · Oct 25, 2026
Jansson, possibly 2.4 and earlier, does not restrict the ability to trigger hash collisions predictably, which allows context-dependent attackers to cause a denial of service (CPU consumption) via a crafted JSON document.
Vulnerable and fixed packages
Distribution-reported package versions and fixes. These do not depend on matching against the OpenFactory package catalog.
| Distribution | Package | Release | Version | Status |
|---|---|---|---|---|
| Debian | jansson | sid | 2.15.1-1 | fixed |
| Debian | jansson | forky | 2.15.1-1 | fixed |
| Debian | jansson | trixie | 2.14-2 | fixed |
| Debian | jansson | bookworm | 2.14-2 | fixed |
| Ubuntu | jansson | 14.04 | 2.4-1 | vulnerable |
| Ubuntu | jansson | 14.04 | 2.5-1 | vulnerable |
| Ubuntu | jansson | 14.04 | 2.5-1ubuntu1 | vulnerable |
| Ubuntu | jansson | 14.04 | 2.5-2 | vulnerable |
| Ubuntu | jansson | 14.04 | 2.5-2ubuntu0.1 | fixed |
Fixed-version evidence
| Distribution | Package | Type | Release | Fixed version | Urgency | Origin | Bugs |
|---|---|---|---|---|---|---|---|
| Debian | jansson | source | sid | 2.6-1 | not yet assigned | Not reported | [738647] |
| Debian | jansson | source | forky | 2.6-1 | not yet assigned | Not reported | [738647] |
| Debian | jansson | source | trixie | 2.6-1 | not yet assigned | Not reported | [738647] |
| Debian | jansson | source | bookworm | 2.6-1 | not yet assigned | Not reported | [738647] |
| Ubuntu | jansson | deb | 14.04 | 2.5-2ubuntu0.1 | Not reported | UBUNTU-CVE-2013-6401 | Not reported |
OpenFactory catalog packages
[Debian 12 (Bookworm)]
- [libjansson4]Fixed
Source package: [jansson]
Details (2)
2.14-2· amd64 · bookwormFixed · Fixed:
2.6-1dsa · jansson · debian · bookworm; dsa · jansson · debian · 12
2.14-2· arm64 · bookwormFixed · Fixed:
2.6-1dsa · jansson · debian · bookworm; dsa · jansson · debian · 12
- [libjansson-dev]Fixed
Source package: [jansson]
Details (2)
2.14-2· amd64 · bookwormFixed · Fixed:
2.6-1dsa · jansson · debian · bookworm; dsa · jansson · debian · 12
2.14-2· arm64 · bookwormFixed · Fixed:
2.6-1dsa · jansson · debian · bookworm; dsa · jansson · debian · 12
- [libjansson-doc]Fixed
Source package: [jansson]
Details (2)
2.14-2· all · bookwormFixed · Fixed:
2.6-1dsa · jansson · debian · bookworm; dsa · jansson · debian · 12
2.14-2· all · bookwormFixed · Fixed:
2.6-1dsa · jansson · debian · bookworm; dsa · jansson · debian · 12
[Debian 13 (Trixie)]
- [libjansson4]Fixed
Source package: [jansson]
Details (2)
2.14-2+b3· amd64 · trixieFixed · Fixed:
2.6-1dsa · jansson · debian · 13
2.14-2+b3· arm64 · trixieFixed · Fixed:
2.6-1dsa · jansson · debian · 13
- [libjansson-dev]Fixed
Source package: [jansson]
Details (2)
2.14-2+b3· amd64 · trixieFixed · Fixed:
2.6-1dsa · jansson · debian · 13
2.14-2+b3· arm64 · trixieFixed · Fixed:
2.6-1dsa · jansson · debian · 13
- [libjansson-doc]Fixed
Source package: [jansson]
Details (2)
2.14-2· all · trixieFixed · Fixed:
2.6-1dsa · jansson · debian · 13
2.14-2· all · trixieFixed · Fixed:
2.6-1dsa · jansson · debian · 13
Observed:
References
- [https://ftp.suse.com/pub/projects/security/csaf/opensuse-su-2024_10331-1.json]
- [https://osv.dev/vulnerability/DEBIAN-CVE-2013-6401]
- [https://osv.dev/vulnerability/UBUNTU-CVE-2013-6401]
- [https://security-tracker.debian.org/tracker/CVE-2013-6401]
- [https://wid.cert-bund.de/.well-known/csaf/white/2025/wid-sec-w-2025-2843.json]
[CERT-Bund public advisories] · [Debian Security Tracker] · [FIRST EPSS] · [OSV Package Vulnerability Database] · [SUSE security advisories and VEX]