jansson: hash table collisions CPU usage DoS
Published Mar 20, 2014
5.0
MEDIUMCVSS 2.0
EPSS 1.97%
Description
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.
Affected products
No data.
- ≤ 2.4
- 2.0
- 2.0.1
- 2.1
- 2.2
- 2.2.1
- 2.3
- 2.3.1
No data.
Red Hat Enterprise Linux 7
jansson
Not affected
| Product | Package | State | Advisory |
|---|---|---|---|
| Red Hat Enterprise Linux 7 | jansson | Not affected | n/a |
No package ranges for this CVE.
Remediation
No remediation recorded yet.
Metrics
No CVSS v4.0 score for this CVE.
No CVSS v3.1 score for this CVE.
No CVSS v3.0 score for this CVE.
AV:N/AC:L/Au:N/C:N/I:N/A:P
This CVE is not in the KEV list.
No CISA SSVC assessment for this CVE yet.
Estimated probability of exploitation in the wild in the next 30 days (FIRST EPSS). As of Oct 1, 2026.
Score over time
2022–2026- EPSS v2
- EPSS v3
- EPSS v4
- EPSS v5
Percentile over time
- EPSS v2
- EPSS v3
- EPSS v4
- EPSS v5
Table of values (10 key points)
Flat stretches are collapsed; showing up to 120 newest points.
| Date | Score | Percentile | Model |
|---|---|---|---|
| Oct 1, 2026 | 1.97% (0.01969) | 79.67th | v5 (v2026.06.15) |
| Jun 15, 2026 | 1.95% (0.01952) | 77.56th | v5 (v2026.06.15) |
| Mar 17, 2025 | 0.34% (0.00341) | 54.59th | v4 (v2025.03.14) |
| Dec 12, 2024 | 0.15% (0.00155) | 53.18th | v3 (v2023.03.01) |
| Jun 14, 2024 | 0.15% (0.00155) | 52.00th | v3 (v2023.03.01) |
| Mar 7, 2023 | 0.15% (0.00155) | 49.98th | v3 (v2023.03.01) |
| Mar 6, 2023 | 1.02% (0.01018) | 40.69th | v2 (v2022.01.01) |
| Sep 10, 2022 | 1.02% (0.01018) | 38.88th | v2 (v2022.01.01) |
| Apr 1, 2022 | 1.02% (0.01018) | 36.86th | v2 (v2022.01.01) |
| Feb 4, 2022 | 1.02% (0.01018) | 19.50th | v2 (v2022.01.01) |
References (7)
- http://comments.gmane.org/gmane.comp.security.oss.general/12099 mailing-listx_refsource_MLIST
- http://lists.opensuse.org/opensuse-updates/2014-03/msg00057.html vendor-advisoryx_refsource_SUSE
- https://access.redhat.com/security/cve/CVE-2013-6401 Vendor Advisory
- https://bugzilla.redhat.com/show_bug.cgi?id=1035538 x_refsource_CONFIRMIssue Tracking
- https://github.com/akheron/jansson/commit/8f80c2d83808150724d31793e6ade92749b1faa4 x_refsource_CONFIRM
- https://nvd.nist.gov/vuln/detail/CVE-2013-6401
- https://www.cve.org/CVERecord?id=CVE-2013-6401
| Link | Providers | Tags |
|---|---|---|
| http://comments.gmane.org/gmane.comp.security.oss.general/12099 | mailing-listx_refsource_MLIST | |
| http://lists.opensuse.org/opensuse-updates/2014-03/msg00057.html | vendor-advisoryx_refsource_SUSE | |
| https://access.redhat.com/security/cve/CVE-2013-6401 | Vendor Advisory | |
| https://bugzilla.redhat.com/show_bug.cgi?id=1035538 | x_refsource_CONFIRMIssue Tracking | |
| https://github.com/akheron/jansson/commit/8f80c2d83808150724d31793e6ade92749b1faa4 | x_refsource_CONFIRM | |
| https://nvd.nist.gov/vuln/detail/CVE-2013-6401 | ||
| https://www.cve.org/CVERecord?id=CVE-2013-6401 |
Change history (0)
No recorded changes yet.