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Fencer Intel
medium 6.5

CVE-2013-6461 json

Nokogiri vulnerable to DoS while parsing XML entities

published 7y ago modified 4mo ago also GHSA-jmhh-w7xp-wg39 , EUVD-2022-4399

cvss
6.5
version 3.1, NVD
cisa kev
Not listed
not in CISA's catalog
epss
2.2%
EPSS 2.2% chance of exploitation in 30 days, percentile 82%
public exploits
0
none known

Summary

Nokogiri gem 1.5.x and 1.6.x has DoS while parsing XML entities by failing to apply limits

Patch / fix

  • rubygems nokogiri 1.5.11, 1.6.1
  • nokogiri nokogiri 1.5.11, 1.6.1

Is CVE-2013-6461 in your dependencies? Fencer shows which of your repositories are affected as soon as an advisory lands, and opens the fix as a pull request.

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Vendor advisories

What the vendors themselves say about their products: affected, fixed or not affected, and what to do.

red hat product security vex CVE-2013-6461 updated cvss 4.3

rubygem-nokogiri: DoS while parsing XML entities

  • Red Hat CloudForms Management Engine 5 rubygem-nokogiri, mingw-rubygem-nokogiri, mingw32-rubygem-nokogiri, mingw64-rubygem-nokogiri, ruby193-rubygem-nokogiri Red Hat OpenShift Enterprise 1 rubygem-nokogiri Red Hat Enterprise MRG 2 ruby-nokogiri, rubygem-nokogiri Red Hat OpenShift Enterprise 2 rubygem-nokogiri Red Hat OpenStack Platform 3 ruby193-rubygem-nokogiri Red Hat OpenStack Platform 4 ruby193-rubygem-nokogiri
    +2 more products
    Red Hat Satellite 6 ruby193-rubygem-nokogiri Red Hat Subscription Asset Manager rubygem-nokogiri, ruby193-rubygem-nokogiri
    not affected: vulnerable code not present

Red Hat CSAF VEX © Red Hat, Inc., from https://security.access.redhat.com/data/csaf/v2/vex/; changed: reduced to product statuses and remediations. CC BY 4.0 · csaf

Exploit prediction

2.19% chance of exploitation in the next 30 days, higher than 82% of all scored CVEs (FIRST EPSS, 2026-11-09).

Exploits and checks

  • bugzilla.redhat.com https://bugzilla.redhat.com/show_bug.cgi?id=CVE-2013-6461 referenced PoC, tagged "exploit" by a source, unverified

CVSS scores

assigned by version score vector
NVD 3.1 6.5 CVSS:3.1/AV:N/AC:L/PR:N/UI:R/S:U/C:N/I:N/A:H
NVD 2.0 4.3 AV:N/AC:M/Au:N/C:N/I:N/A:P
GitHub 3.1 6.5 CVSS:3.1/AV:N/AC:L/PR:N/UI:R/S:U/C:N/I:N/A:H

Affected packages

ecosystem package affected fixed in
rubygems nokogiri
>=1.5.0, <1.5.11
>=1.6.0, <1.6.1
1.5.11
1.6.1

Affected products

  • Ruby Nokogiri gem

Classification

Weakness
  • CWE-776 Improper Restriction of Recursive Entity References in DTDs

References

Sources

Fencer Intel keeps one entry per vulnerability: the CVE id wins, then GHSA, and records that alias each other are merged, except that two CVEs always keep separate entries. The same data is available as JSON.