Predictive Vulnerability Intelligence.

Product

  • Product
  • Pricing
  • Documentation

Company

  • About
  • Partnerships
  • Blog
  • Support

Legal

  • Terms
  • Privacy
  • Data Licensing

© 2026 FAUCET Technologies LLC. All rights reserved.

CVE-2013-6371

17
FAUCET Score

CVE-2013-6371 describes a denial-of-service vulnerability in the hash functionality of json-c versions prior to 0.12, affecting products like Fedora. Attackers can exploit this by submitting crafted JSON data, leading to excessive CPU consumption due to hash collisions. This vulnerability has a CVSS score of 5.0, indicating a medium severity with a network attack vector, low attack complexity, and potential for partial availability impact. There is no evidence of active exploitation, no known exploit code in Metasploit or ExploitDB, and minimal community discussion or media coverage.

Impacted Technologies

VendorProductVersion(s)CPE
< 0.12-20140410CPE matchmatch criteria
cpe:2.3:a:json-c:json-c:*:*:*:*:*:*:*:*
20CPE matchmatch criteria
cpe:2.3:o:fedoraproject:fedora:20:*:*:*:*:*:*:*

CVSS Data

CVSS version used by this source: 2.0

5.0MEDIUM

AV:N/AC:L/Au:N/C:N/I:N/A:P

Confidentiality Impact
NONE
Integrity Impact
NONE
Availability Impact
PARTIAL
Access Vector
NETWORK
Access Complexity
LOW
Authentication
NONE
Exploitability Score
10.0
Impact Score
2.9
CvssVersion
2.0

Exploit Intelligence

EPSS Score
3.03%
Probability of exploitation in next 30 days
EPSS Percentile
86.1%
Percentile rank of EPSS score among Peer Group
As of 2026-07-26
Model: v2026.06.15
This CVE's current EPSS score of 0.0303 is in the 80th percentile among its peer group of 23,701 CVEs.

Social Chatter

The average CVE in this peer group has 0.0 Twitter, 0.0 Reddit, 0.1 Bluesky, 0.0 Mastodon, and 0.4 GitHub mentions.

Media Mentions

No media coverage found for this CVE.

The average CVE in this peer group has 0.0 InfoSec Media, 0.0 Vendor Blog, and 0.0 Security Researcher mentions.

Remediation

Patch Available

Vendor Patches (3)

github_advisorypatch availablevia nvd_reference
View patch
redhatpatch availablevia redhat_api
Product: Red Hat Enterprise Linux 7Fixed in: json-c-0:0.11-4.el7_0
View patch
redhatno patchvia redhat_api
Product: Red Hat Software CollectionsFixed in: php55-php-pecl-jsonc

Vendor Advisories (1)

redhatCVE-2013-6371Moderate

json-c: hash collision DoS

Apr 9, 2014

References

lists.fedoraproject.org / pipermail/package-announce/2014-April/131845.html
Third Party Advisory
bugzilla.redhat.com / show_bug.cgi
Issue Tracking
secunia.com / advisories/57791
Permissions RequiredThird Party Advisory
exchange.xforce.ibmcloud.com / vulnerabilities/92541
VDB Entry
github.com / json-c/json-c/commit/64e36901a0614bf64a19bc3396469c66dcd0b015
Issue TrackingPatch
mandriva.com / security/advisories
Broken Link
oracle.com / technetwork/topics/security/bulletinoct2015-2511968.html
Third Party Advisory
securityfocus.com / bid/66715
Third Party AdvisoryVDB Entry