CVE-2013-6371

The hash functionality in json-c before 0.12 allows context-dependent attackers to cause a denial of service (CPU consumption) via crafted JSON data, involving collisions.

Published: 2014-04-22 Last update: 2026-06-16 Assigner: [email protected] Source: [email protected]
NVD Status：Modified，CVE State: published
View at NVD, CVE.org, EUVD

CVE-2013-6371 is rated Moderate Risk (53.1/100): CVSS Medium severity, with medium exploitation likelihood (EPSS 3.23%). EPSS rose +2.84% over the last day, indicating growing attacker interest. Review affected assets and schedule remediation.

Risk is dynamic; we continuously reassess and refresh what is shown on this page as upstream context changes.

Exploit prediction scoring system (EPSS) score for CVE-2013-6371

EPSS lead: Daily EPSS estimates relative likelihood of exploitation; percentile ranks this CVE among scored vulnerabilities (higher = more severe relative rank).

# Date Old EPSS score New EPSS score Delta (New - Old)
1 2026-06-15 0.38% 3.23% +2.84%
2 2026-02-20 0.57% 0.38% -0.19%
3 2025-11-04 — 0.57% —

Full EPSS history (15 records total)

Common vulnerability scoring system (CVSS) metrics for CVE-2013-6371

CVSS metrics for this CVE.

Base score Version Severity Vector Exploitability Impact Score source
5.0 2.0 MEDIUM
AV:N/AC:L/Au:N/C:N/I:N/A:P Click to expand
Access vector (AV:N)
Can be exploited remotely over network reachability.
Access complexity (AC:L)
Exploitation conditions are straightforward and predictable.
Authentication (AU:N)
No authentication is required.
Confidentiality impact (C:N)
No confidentiality impact.
Integrity impact (I:N)
No integrity impact.
Availability impact (A:P)
Partial availability impact.
 10.0 2.9 [email protected]

Weakness enumeration for CVE-2013-6371

OS Trackers for CVE-2013-6371

vendor priority summary link
debian not yet assigned CVE-2013-6371 not yet assigned priority: Debian including 1 source packages (json-c), 5 status rows across 5 suites (bookworm, bullseye, forky, sid, trixie): resolved 5. https://security-tracker.debian.org/tracker/CVE-2013-6371
redhat medium — https://access.redhat.com/security/cve/CVE-2013-6371
suse medium CVE-2013-6371 severity moderate: SUSE including 361 source package names (amazon/suse-sles-15-sp1-chost-byos-v20210304-hvm-ssd-x86_64, amazon/suse-sles-15-sp1-chost-byos-v20220127-hvm-ssd-x86_64, …), 502 product×package rows across 61 product lines (HPE Helion OpenStack 8, SUSE Liberty Linux 7, … (61 product lines)): Fixed 290, Known Affected 157, Known Not Affected 55. https://www.suse.com/security/cve/CVE-2013-6371/
ubuntu medium CVE-2013-6371 medium priority: Ubuntu including 1 source packages (json-c), 6 status rows across 6 suites (lucid, precise, quantal, saucy, trusty, upstream): released 4, ignored 2. https://ubuntu.com/security/CVE-2013-6371

Affected software / configurations for CVE-2013-6371

Vendor Product Version Raw CPE
json-c json-c < 0.12-20140410 cpe:2.3:a:json-c:json-c:*:*:*:*:*:*:*:*
fedoraproject fedora 20 cpe:2.3:o:fedoraproject:fedora:20:*:*:*:*:*:*:*

References for CVE-2013-6371

cvelogic Threat Intelligence