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Fencer Intel
medium 5.0

CVE-2015-1819 json

Nokogiri vulnerable to libxml XML Entity Expansion

published 11y ago modified 4mo ago also EUVD-2018-0420 , GHSA-q7wx-62r7-j2x7

cvss
5.0
version 2.0, NVD
cisa kev
Not listed
not in CISA's catalog
epss
6.3%
EPSS 6.3% chance of exploitation in 30 days, percentile 93%
public exploits
0
none known

Summary

The xmlreader in libxml allows remote attackers to cause a denial of service (memory consumption) via crafted XML data, related to an XML Entity Expansion (XEE) attack.

Patch / fix

  • rubygems nokogiri 1.6.6.4
  • xmlsoft libxml2 2.9.3
  • nokogiri nokogiri 1.6.6.4
  • sparklemotion nokogiri 1.6.6.4
  • libxml2 Debian 14, Debian 13, Debian 12 2.9.2+really2.9.1+dfsg1-0.1

debian advisories DEBIAN-CVE-2015-1819

  • libxml2 Ubuntu 14.04 LTS 2.9.1+dfsg1-3ubuntu4.5

ubuntu advisories UBUNTU-CVE-2015-1819

Ubuntu security data © Canonical Ltd., from https://github.com/canonical/ubuntu-security-notices via OSV; changed: normalised to fixed package versions per release. CC BY-SA 4.0

  • libxml2 RHEL 7 2.9.1-6.el7_2.2
  • libxml2-python RHEL 7 2.9.1-6.el7_2.2
  • libxml2 RHEL 6 2.7.6-20.el6
  • libxml2-python RHEL 6 2.7.6-20.el6

red hat advisories RHSA-2015:2550RHSA-2015:1419

  • libxml2 SLES for SAP 12 SP1, SLES for SAP 12, SLES 12 SP1 +5 more 2.9.1-13.1
  • python-libxml2 SLES for SAP 12 SP1, SLES for SAP 12, SLES 12 SP1 +3 more 2.9.1-13.1
  • libxml2 SLES for SAP 11 SP4, SLES for SAP 11 SP3, SLES 11 SP4 +6 more 2.7.6-0.34.1
  • libxml2-python SLES for SAP 11 SP4, SLES for SAP 11 SP3, SLES 11 SP4 +4 more 2.7.6-0.34.4

suse advisories SUSE-SU-2016:0049-1SUSE-SU-2016:0030-1

  • rubygem-nokogiri openSUSE Tumbleweed 1.18.9-1.4
  • rubygem-nokogiri openSUSE Tumbleweed 1.18.2-1.1
  • rubygem-nokogiri openSUSE Tumbleweed 1.15.5-1.5
  • libxml2 openSUSE Tumbleweed 2.9.4-1.22
  • rubygem-nokogiri openSUSE Tumbleweed 1.6.8.1-1.3
  • rubygem-nokogiri openSUSE Tumbleweed 1.13.3-1.1
  • ruby3.2-rubygem-nokogiri openSUSE Tumbleweed 1.13.9-1.7

opensuse advisories openSUSE-SU-2026:10356-1openSUSE-SU-2025:14697-1openSUSE-SU-2024:14174-1openSUSE-SU-2024:10192-1openSUSE-SU-2024:10549-1openSUSE-SU-2024:11912-1

Is CVE-2015-1819 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-2015-1819 updated cvss 2.6

libxml2: denial of service processing a crafted XML document

  • Red Hat Enterprise Linux 5 libxml2
    affected: no fix planned “Will not fix”
  • Red Hat Enterprise Linux Client (v. 7) libxml2 2.9.1-6.el7_2.2, libxml2-python 2.9.1-6.el7_2.2 Red Hat Enterprise Linux Client Optional (v. 7) libxml2-devel 2.9.1-6.el7_2.2, libxml2-static 2.9.1-6.el7_2.2, libxml2-debuginfo 2.9.1-6.el7_2.2 Red Hat Enterprise Linux ComputeNode (v. 7) libxml2 2.9.1-6.el7_2.2, libxml2-python 2.9.1-6.el7_2.2 Red Hat Enterprise Linux ComputeNode Optional (v. 7) libxml2-devel 2.9.1-6.el7_2.2, libxml2-static 2.9.1-6.el7_2.2, libxml2-debuginfo 2.9.1-6.el7_2.2
    fixed: vendor fix RHSA-2015:2550
  • Red Hat Enterprise Linux Desktop (v. 6) libxml2 2.7.6-20.el6, libxml2-python 2.7.6-20.el6 Red Hat Enterprise Linux Desktop Optional (v. 6) libxml2-devel 2.7.6-20.el6, libxml2-static 2.7.6-20.el6, libxml2-debuginfo 2.7.6-20.el6 Red Hat Enterprise Linux HPC Node (v. 6) libxml2 2.7.6-20.el6, libxml2-python 2.7.6-20.el6 Red Hat Enterprise Linux HPC Node Optional (v. 6) libxml2-devel 2.7.6-20.el6, libxml2-static 2.7.6-20.el6, libxml2-debuginfo 2.7.6-20.el6 Red Hat Enterprise Linux Server (v. 6) libxml2 2.7.6-20.el6, libxml2-python 2.7.6-20.el6
    fixed: vendor fix RHSA-2015:1419
  • Red Hat Enterprise Linux Server (v. 7) libxml2 2.9.1-6.el7_2.2, libxml2-python 2.9.1-6.el7_2.2
    fixed: vendor fix RHSA-2015:2550
  • Red Hat Enterprise Linux Server Optional (v. 6) libxml2-static 2.7.6-20.el6, libxml2-debuginfo 2.7.6-20.el6
    fixed: vendor fix RHSA-2015:1419
  • Red Hat Enterprise Linux Server Optional (v. 7) libxml2-static 2.9.1-6.el7_2.2, libxml2-debuginfo 2.9.1-6.el7_2.2
    fixed: vendor fix RHSA-2015:2550
  • Red Hat Enterprise Linux Workstation (v. 6) libxml2 2.7.6-20.el6, libxml2-python 2.7.6-20.el6
    fixed: vendor fix RHSA-2015:1419
  • Red Hat Enterprise Linux Workstation (v. 7) libxml2 2.9.1-6.el7_2.2, libxml2-python 2.9.1-6.el7_2.2
    fixed: vendor fix RHSA-2015:2550
show 2 more
  • Red Hat Enterprise Linux Workstation Optional (v. 6) libxml2-static 2.7.6-20.el6, libxml2-debuginfo 2.7.6-20.el6
    fixed: vendor fix RHSA-2015:1419
  • Red Hat Enterprise Linux Workstation Optional (v. 7) libxml2-static 2.9.1-6.el7_2.2, libxml2-debuginfo 2.9.1-6.el7_2.2
    fixed: vendor fix RHSA-2015:2550

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

6.29% chance of exploitation in the next 30 days, higher than 93% of all scored CVEs (FIRST EPSS, 2026-11-09).

CVSS scores

assigned by version score vector
NVD 2.0 5.0 AV:N/AC:L/Au:N/C:N/I:N/A:P

Affected packages

ecosystem package affected fixed in
rubygems nokogiri
>=1.6.6.0, <1.6.6.4
1.6.6.4

Classification

Weakness
  • CWE-776 Improper Restriction of Recursive Entity References in DTDs
  • CWE-399 Resource Management Errors

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.

CPEs and fixed versions use Anchore's correction of NVD's data: Added CPE configurations because not yet analyzed by NVD.