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CVE-2013-6461

18
FAUCET Score

CVE-2013-6461 describes a denial-of-service (DoS) vulnerability in Nokogiri gem versions 1.5.x and 1.6.x, affecting products like Debian and Red Hat, due to a failure to properly limit XML entity parsing. This medium-severity vulnerability (CVSS 6.5) can be triggered remotely with low attack complexity, requiring user interaction, and primarily impacts availability. There is no evidence of active exploitation, public exploit code (Metasploit, Nuclei, ExploitDB), or significant community discussion or media coverage, suggesting it is not widely targeted.

Impacted Technologies

VendorProductVersion(s)CPE
>= 1.5.0, < 1.5.11CPE matchmatch criteria
cpe:2.3:a:nokogiri:nokogiri:*:*:*:*:*:*:*:*
>= 1.6.0, < 1.6.1CPE matchmatch criteria
cpe:2.3:a:nokogiri:nokogiri:*:*:*:*:*:*:*:*
8.0CPE matchmatch criteria
cpe:2.3:o:debian:debian_linux:8.0:*:*:*:*:*:*:*
9.0CPE matchmatch criteria
cpe:2.3:o:debian:debian_linux:9.0:*:*:*:*:*:*:*
10.0CPE matchmatch criteria
cpe:2.3:o:debian:debian_linux:10.0:*:*:*:*:*:*:*

CVSS Data

CVSS version used by this source: 3.1

6.5MEDIUM

CVSS:3.1/AV:N/AC:L/PR:N/UI:R/S:U/C:N/I:N/A:H

Attack Vector
NETWORK
Attack Complexity
LOW
Privileges Required
NONE
User Interaction
REQUIRED
Scope
UNCHANGED
Confidentiality Impact
NONE
Integrity Impact
NONE
Availability Impact
HIGH
Exploitability Score
2.8
Impact Score
3.6
CvssVersion
3.1

Exploit Intelligence

EPSS Score
2.19%
Probability of exploitation in next 30 days
EPSS Percentile
80.6%
Percentile rank of EPSS score among Peer Group
As of 2026-07-27
Model: v2026.06.15
This CVE's current EPSS score of 0.0219 is in the 91st percentile among its peer group of 26,234 CVEs.

Social Chatter

No social media mentions found for this CVE.

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

Media Mentions

No media coverage found for this CVE.

The average CVE in this peer group has 0.1 InfoSec Media, 0.0 Vendor Blog, and 0.0 Security Researcher mentions.

Remediation

Patch Available

Vendor Patches (2)

rubygemspatch availablevia ghsa
Product: nokogiriFixed in: 1.5.11
rubygemspatch availablevia ghsa
Product: nokogiriFixed in: 1.6.1

Vendor Advisories (2)

rubygemsGHSA-jmhh-w7xp-wg39medium

Nokogiri vulnerable to DoS while parsing XML entities

May 5, 2022
redhatCVE-2013-6461Moderate

rubygem-nokogiri: DoS while parsing XML entities

Dec 15, 2013

References

access.redhat.com / security/cve/cve-2013-6461
Third Party Advisory
bugzilla.redhat.com / show_bug.cgi
ExploitIssue TrackingThird Party Advisory
exchange.xforce.ibmcloud.com / vulnerabilities/90059
Third Party AdvisoryVDB Entry
security-tracker.debian.org / tracker/CVE-2013-6461
Third Party Advisory
openwall.com / lists/oss-security/2013/12/27/2
Mailing ListThird Party Advisory
securityfocus.com / bid/64513
Third Party AdvisoryVDB Entry