CVE-2013-1821
Ruby vulnerable to denial of service
5.0 MediumFix available
lib/rexml/text.rb in the REXML parser in Ruby before 1.9.3-p392 allows remote attackers to cause a denial of service (memory consumption and crash) via crafted text nodes in an XML document, aka an XML Entity Expansion (XEE) attack.
Exploit likelihood
6.86%Up 2.5 points since Feb 4, 2022
What each source reports
NVD Score used
lib/rexml/text.rb in the REXML parser in Ruby before 1.9.3-p392 allows remote attackers to cause a denial of service (memory consumption and crash) via crafted text nodes in an XML document, aka an XML Entity Expansion (XEE) attack.
- Record
CVE-2013-1821- CVSS 2.0
- 5.0 Medium
AV:N/AC:L/Au:N/C:N/I:N/A:P - Weakness
- CWE-20
- Updated
- 2026-11-02
CVE List No score
lib/rexml/text.rb in the REXML parser in Ruby before 1.9.3-p392 allows remote attackers to cause a denial of service (memory consumption and crash) via crafted text nodes in an XML document, aka an XML Entity Expansion (XEE) attack.
- Record
CVE-2013-1821- Updated
- 2026-11-02
EUVDEUVD-2022-4143 No score
lib/rexml/text.rb in the REXML parser in Ruby before 1.9.3-p392 allows remote attackers to cause a denial of service (memory consumption and crash) via crafted text nodes in an XML document, aka an XML Entity Expansion (XEE) attack.
- Record
EUVD-2022-4143- Updated
- 2026-11-03
GitHub AdvisoriesGHSA-hgg7-cghq-xhf4 No score
Ruby vulnerable to denial of service
When reading text nodes from an XML document, the REXML parser can be coerced in to allocating extremely large string objects which can consume all of the memory on a machine, causing a denial of service.
Jruby resolves this bug in version 1.7.3 as noted in https://www.jruby.org/2013/02/21/jruby-1-7-3.html
- Record
GHSA-hgg7-cghq-xhf4- Weakness
- CWE-400
- Updated
- 2026-11-02
OSVRHSA-2026:7305
Red Hat Security Advisory: Red Hat Hardened Images RPMs bug fix and enhancement update
- Record
RHSA-2026:7305- CVSS 3.1
- 7.5 High
CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:H/A:N - Updated
- 2026-11-02
OSVRHSA-2026:7307
Red Hat Security Advisory: Red Hat Hardened Images RPMs bug fix and enhancement update
- Record
RHSA-2026:7307- CVSS 3.1
- 7.5 High
CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:H/A:N - Updated
- 2026-11-02
OSVRHSA-2026:8838
Red Hat Security Advisory: Red Hat Hardened Images RPMs bug fix and enhancement update
- Record
RHSA-2026:8838- CVSS 3.1
- 7.5 High
CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:H/A:N - Updated
- 2026-11-02
OSVGHSA-hgg7-cghq-xhf4 No score
Ruby vulnerable to denial of service
When reading text nodes from an XML document, the REXML parser can be coerced in to allocating extremely large string objects which can consume all of the memory on a machine, causing a denial of service.
Jruby resolves this bug in version 1.7.3 as noted in https://www.jruby.org/2013/02/21/jruby-1-7-3.html
- Record
GHSA-hgg7-cghq-xhf4- Weakness
- CWE-400
- Updated
- 2026-11-02
Affected products
Affected packages
| Package | Affected | Fixed |
|---|---|---|
org.jruby:jrubyMaven |
before 1.7.3 | 1.7.3 |
ruby1.9.1Debian:6.0 |
before 1.9.2.0-2+deb6u1, plus listed versions 1.9.2.0-21.9.2.0-2+armhf |
1.9.2.0-2+deb6u1 |
ruby1.9.1Debian:7 |
before 1.9.3.194-8.1+deb7u1, plus listed versions 1.9.3.194-8.1 |
1.9.3.194-8.1+deb7u1 |
ruby1.8Debian:6.0 |
before 1.8.7.302-2squeeze2, plus listed versions 1.8.7.302-21.8.7.302-2squeeze1 |
1.8.7.302-2squeeze2 |
ruby1.8Debian:7 |
before 1.8.7.358-7.1+deb7u1, plus listed versions 1.8.7.358-71.8.7.358-7.1 |
1.8.7.358-7.1+deb7u1 |
org.jruby:jrubyMaven |
before 1.7.3, plus listed versions 0.8.30.9.10.9.20.9.80.9.9 Show 45 moreShow less1.01.0.11.0.21.0.31.0RC11.0RC21.0RC31.11.1.11.1.21.1.31.1.41.1.51.1.61.1.6RC11.1RC11.1RC21.1RC31.1b11.2.01.2.0RC21.2RC11.3.01.3.0RC11.3.0RC21.3.11.4.01.4.0RC11.4.0RC21.4.0RC31.4.11.5.01.5.0.RC11.5.0.RC21.5.0.RC31.5.11.5.21.5.31.5.51.5.61.6.01.6.0.RC11.6.0.RC21.6.0.RC31.6.1 |
1.7.3 |
rubyRed Hat:enterprise_linux:5::server |
before 0:1.8.5-29.el5_9 | 0:1.8.5-29.el5_9 |
ruby-debuginfoRed Hat:enterprise_linux:5::server |
before 0:1.8.5-29.el5_9 | 0:1.8.5-29.el5_9 |
ruby-develRed Hat:enterprise_linux:5::server |
before 0:1.8.5-29.el5_9 | 0:1.8.5-29.el5_9 |
ruby-docsRed Hat:enterprise_linux:5::server |
before 0:1.8.5-29.el5_9 | 0:1.8.5-29.el5_9 |
Show 64 moreShow less
| Package | Affected | Fixed |
|---|---|---|
ruby-irbRed Hat:enterprise_linux:5::server |
before 0:1.8.5-29.el5_9 | 0:1.8.5-29.el5_9 |
ruby-libsRed Hat:enterprise_linux:5::server |
before 0:1.8.5-29.el5_9 | 0:1.8.5-29.el5_9 |
ruby-modeRed Hat:enterprise_linux:5::server |
before 0:1.8.5-29.el5_9 | 0:1.8.5-29.el5_9 |
ruby-rdocRed Hat:enterprise_linux:5::server |
before 0:1.8.5-29.el5_9 | 0:1.8.5-29.el5_9 |
ruby-riRed Hat:enterprise_linux:5::server |
before 0:1.8.5-29.el5_9 | 0:1.8.5-29.el5_9 |
ruby-tcltkRed Hat:enterprise_linux:5::server |
before 0:1.8.5-29.el5_9 | 0:1.8.5-29.el5_9 |
rubyRed Hat:enterprise_linux:6::client |
before 0:1.8.7.352-10.el6_4 | 0:1.8.7.352-10.el6_4 |
ruby-debuginfoRed Hat:enterprise_linux:6::client |
before 0:1.8.7.352-10.el6_4 | 0:1.8.7.352-10.el6_4 |
ruby-develRed Hat:enterprise_linux:6::client |
before 0:1.8.7.352-10.el6_4 | 0:1.8.7.352-10.el6_4 |
ruby-irbRed Hat:enterprise_linux:6::client |
before 0:1.8.7.352-10.el6_4 | 0:1.8.7.352-10.el6_4 |
ruby-libsRed Hat:enterprise_linux:6::client |
before 0:1.8.7.352-10.el6_4 | 0:1.8.7.352-10.el6_4 |
ruby-rdocRed Hat:enterprise_linux:6::client |
before 0:1.8.7.352-10.el6_4 | 0:1.8.7.352-10.el6_4 |
ruby-docsRed Hat:enterprise_linux:6::client |
before 0:1.8.7.352-10.el6_4 | 0:1.8.7.352-10.el6_4 |
ruby-riRed Hat:enterprise_linux:6::client |
before 0:1.8.7.352-10.el6_4 | 0:1.8.7.352-10.el6_4 |
ruby-staticRed Hat:enterprise_linux:6::client |
before 0:1.8.7.352-10.el6_4 | 0:1.8.7.352-10.el6_4 |
ruby-tcltkRed Hat:enterprise_linux:6::client |
before 0:1.8.7.352-10.el6_4 | 0:1.8.7.352-10.el6_4 |
rubyRed Hat:enterprise_linux:6::computenode |
before 0:1.8.7.352-10.el6_4 | 0:1.8.7.352-10.el6_4 |
ruby-debuginfoRed Hat:enterprise_linux:6::computenode |
before 0:1.8.7.352-10.el6_4 | 0:1.8.7.352-10.el6_4 |
ruby-develRed Hat:enterprise_linux:6::computenode |
before 0:1.8.7.352-10.el6_4 | 0:1.8.7.352-10.el6_4 |
ruby-irbRed Hat:enterprise_linux:6::computenode |
before 0:1.8.7.352-10.el6_4 | 0:1.8.7.352-10.el6_4 |
ruby-libsRed Hat:enterprise_linux:6::computenode |
before 0:1.8.7.352-10.el6_4 | 0:1.8.7.352-10.el6_4 |
ruby-rdocRed Hat:enterprise_linux:6::computenode |
before 0:1.8.7.352-10.el6_4 | 0:1.8.7.352-10.el6_4 |
ruby-docsRed Hat:enterprise_linux:6::computenode |
before 0:1.8.7.352-10.el6_4 | 0:1.8.7.352-10.el6_4 |
ruby-riRed Hat:enterprise_linux:6::computenode |
before 0:1.8.7.352-10.el6_4 | 0:1.8.7.352-10.el6_4 |
ruby-staticRed Hat:enterprise_linux:6::computenode |
before 0:1.8.7.352-10.el6_4 | 0:1.8.7.352-10.el6_4 |
ruby-tcltkRed Hat:enterprise_linux:6::computenode |
before 0:1.8.7.352-10.el6_4 | 0:1.8.7.352-10.el6_4 |
rubyRed Hat:enterprise_linux:6::server |
before 0:1.8.7.352-10.el6_4 | 0:1.8.7.352-10.el6_4 |
ruby-debuginfoRed Hat:enterprise_linux:6::server |
before 0:1.8.7.352-10.el6_4 | 0:1.8.7.352-10.el6_4 |
ruby-develRed Hat:enterprise_linux:6::server |
before 0:1.8.7.352-10.el6_4 | 0:1.8.7.352-10.el6_4 |
ruby-irbRed Hat:enterprise_linux:6::server |
before 0:1.8.7.352-10.el6_4 | 0:1.8.7.352-10.el6_4 |
ruby-libsRed Hat:enterprise_linux:6::server |
before 0:1.8.7.352-10.el6_4 | 0:1.8.7.352-10.el6_4 |
ruby-rdocRed Hat:enterprise_linux:6::server |
before 0:1.8.7.352-10.el6_4 | 0:1.8.7.352-10.el6_4 |
ruby-docsRed Hat:enterprise_linux:6::server |
before 0:1.8.7.352-10.el6_4 | 0:1.8.7.352-10.el6_4 |
ruby-riRed Hat:enterprise_linux:6::server |
before 0:1.8.7.352-10.el6_4 | 0:1.8.7.352-10.el6_4 |
ruby-staticRed Hat:enterprise_linux:6::server |
before 0:1.8.7.352-10.el6_4 | 0:1.8.7.352-10.el6_4 |
ruby-tcltkRed Hat:enterprise_linux:6::server |
before 0:1.8.7.352-10.el6_4 | 0:1.8.7.352-10.el6_4 |
rubyRed Hat:enterprise_linux:6::workstation |
before 0:1.8.7.352-10.el6_4 | 0:1.8.7.352-10.el6_4 |
ruby-debuginfoRed Hat:enterprise_linux:6::workstation |
before 0:1.8.7.352-10.el6_4 | 0:1.8.7.352-10.el6_4 |
ruby-develRed Hat:enterprise_linux:6::workstation |
before 0:1.8.7.352-10.el6_4 | 0:1.8.7.352-10.el6_4 |
ruby-irbRed Hat:enterprise_linux:6::workstation |
before 0:1.8.7.352-10.el6_4 | 0:1.8.7.352-10.el6_4 |
ruby-libsRed Hat:enterprise_linux:6::workstation |
before 0:1.8.7.352-10.el6_4 | 0:1.8.7.352-10.el6_4 |
ruby-rdocRed Hat:enterprise_linux:6::workstation |
before 0:1.8.7.352-10.el6_4 | 0:1.8.7.352-10.el6_4 |
ruby-docsRed Hat:enterprise_linux:6::workstation |
before 0:1.8.7.352-10.el6_4 | 0:1.8.7.352-10.el6_4 |
ruby-riRed Hat:enterprise_linux:6::workstation |
before 0:1.8.7.352-10.el6_4 | 0:1.8.7.352-10.el6_4 |
ruby-staticRed Hat:enterprise_linux:6::workstation |
before 0:1.8.7.352-10.el6_4 | 0:1.8.7.352-10.el6_4 |
ruby-tcltkRed Hat:enterprise_linux:6::workstation |
before 0:1.8.7.352-10.el6_4 | 0:1.8.7.352-10.el6_4 |
ruby3.3Red Hat:hummingbird:1 |
before 0:3.3.10-23.1.hum1 | 0:3.3.10-23.1.hum1 |
ruby3.3-bundled-gemsRed Hat:hummingbird:1 |
before 0:3.3.10-23.1.hum1 | 0:3.3.10-23.1.hum1 |
ruby3.3-default-gemsRed Hat:hummingbird:1 |
before 0:3.3.10-23.1.hum1 | 0:3.3.10-23.1.hum1 |
ruby3.3-develRed Hat:hummingbird:1 |
before 0:3.3.10-23.1.hum1 | 0:3.3.10-23.1.hum1 |
ruby3.3-docRed Hat:hummingbird:1 |
before 0:3.3.10-23.1.hum1 | 0:3.3.10-23.1.hum1 |
ruby3.3-libsRed Hat:hummingbird:1 |
before 0:3.3.10-23.1.hum1 | 0:3.3.10-23.1.hum1 |
ruby3.4Red Hat:hummingbird:1 |
before 0:3.4.8-31.1.hum1 | 0:3.4.8-31.1.hum1 |
ruby3.4-bundled-gemsRed Hat:hummingbird:1 |
before 0:3.4.8-31.1.hum1 | 0:3.4.8-31.1.hum1 |
ruby3.4-default-gemsRed Hat:hummingbird:1 |
before 0:3.4.8-31.1.hum1 | 0:3.4.8-31.1.hum1 |
ruby3.4-develRed Hat:hummingbird:1 |
before 0:3.4.8-31.1.hum1 | 0:3.4.8-31.1.hum1 |
ruby3.4-docRed Hat:hummingbird:1 |
before 0:3.4.8-31.1.hum1 | 0:3.4.8-31.1.hum1 |
ruby3.4-libsRed Hat:hummingbird:1 |
before 0:3.4.8-31.1.hum1 | 0:3.4.8-31.1.hum1 |
ruby4.0Red Hat:hummingbird:1 |
before 0:4.0.0-33.3.hum1 | 0:4.0.0-33.3.hum1 |
ruby4.0-bundled-gemsRed Hat:hummingbird:1 |
before 0:4.0.0-33.3.hum1 | 0:4.0.0-33.3.hum1 |
ruby4.0-default-gemsRed Hat:hummingbird:1 |
before 0:4.0.0-33.3.hum1 | 0:4.0.0-33.3.hum1 |
ruby4.0-develRed Hat:hummingbird:1 |
before 0:4.0.0-33.3.hum1 | 0:4.0.0-33.3.hum1 |
ruby4.0-docRed Hat:hummingbird:1 |
before 0:4.0.0-33.3.hum1 | 0:4.0.0-33.3.hum1 |
ruby4.0-libsRed Hat:hummingbird:1 |
before 0:4.0.0-33.3.hum1 | 0:4.0.0-33.3.hum1 |
History
| Recorded | Changed | Sources |
|---|---|---|
| aliases | EUVD | |
| first indexed | CVE List, GitHub Advisories, NVD, OSV |
Dates are when Every CVE recorded each change. Upstream dates may differ.
In short
CVE-2013-1821 is a medium vulnerability (CVSS 5.0) in Ruby-lang Ruby, published April 9, 2013. No source lists public exploit code. EPSS puts the chance of exploitation in the next 30 days at 6.86%, the 94th percentile. Fixed in org.jruby:jruby 1.7.3.
References
rhn.redhat.com/errata/RHSA-2013-0612.html
mandriva.com/security/advisories?name=MDVSA-2013:124
lists.opensuse.org/opensuse-updates/2013-04/msg00034.html
slackware.com/security/viewer.php?l=slackware-security&y=2013&m=slackware-security.426862
secunia.com/advisories/52783
debian.org/security/2013/dsa-2738
Show 190 moreShow less
svn.ruby-lang.org/cgi-bin/viewvc.cgi?view=revision&revision=39384
bugs.debian.org/cgi-bin/bugreport.cgi?bug=702525
wiki.mageia.org/en/Support/Advisories/MGASA-2013-0092
oracle.com/technetwork/topics/security/bulletinjul2015-2511963.html
ubuntu.com/usn/USN-1780-1
securityfocus.com/bid/58141
openwall.com/lists/oss-security/2013/03/06/5
bugzilla.redhat.com/show_bug.cgi?id=914716
ruby-lang.org/en/news/2013/02/22/rexml-dos-2013-02-22
nvd.nist.gov/vuln/detail/CVE-2013-1821
jruby.org/2013/02/21/jruby-1-7-3.html
github.com/advisories/GHSA-hgg7-cghq-xhf4
access.redhat.com/errata/RHSA-2013:0611
security.access.redhat.com/data/csaf/v2/advisories/2013/rhsa-2013_0611.json
cve.org/CVERecord?id=CVE-2013-1821
images.redhat.com
hackerone.com/reports/3467067
This page doesn't list everything
Left out here: 17 versions. The JSON record has them.