CVE-2013-1821

NONECVSS 0.0Trending — 3 sources updated this weekElevated

0.0

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.

CVSS v3: —
EG Score: 0.0(none)
EPSS: 96.3%
KEV: Not listed

Published

April 9, 2013

Last Modified

April 29, 2026

References (46)

secalert@redhathttp://bugs.debian.org/cgi-bin/bugreport.cgi?bug=702525
secalert@redhathttp://lists.opensuse.org/opensuse-security-announce/2013-04/msg00001.html
secalert@redhathttp://lists.opensuse.org/opensuse-security-announce/2013-04/msg00015.html
secalert@redhathttp://lists.opensuse.org/opensuse-updates/2013-04/msg00034.html
secalert@redhathttp://lists.opensuse.org/opensuse-updates/2013-04/msg00036.html
secalert@redhathttp://rhn.redhat.com/errata/RHSA-2013-0611.html
secalert@redhathttp://rhn.redhat.com/errata/RHSA-2013-0612.html
secalert@redhathttp://rhn.redhat.com/errata/RHSA-2013-1028.html
secalert@redhathttp://rhn.redhat.com/errata/RHSA-2013-1147.html
secalert@redhathttp://secunia.com/advisories/52783
secalert@redhathttp://secunia.com/advisories/52902
secalert@redhathttp://svn.ruby-lang.org/cgi-bin/viewvc.cgi?view=revision&revision=39384
secalert@redhathttp://www.debian.org/security/2013/dsa-2738
secalert@redhathttp://www.debian.org/security/2013/dsa-2809
secalert@redhathttp://www.mandriva.com/security/advisories?name=MDVSA-2013:124

Patch Availability(9)

Vendor / Ecosystem	Fixed in / Patch	Released	Source
ubuntu	libruby1.9.1 (1.9.3.194-1ubuntu1.4) @ quantal	2026-05-29	ubuntu
redhat	ruby4-0-main-4.0.0-33.3.hum1	2026-04-17	redhat
redhat	ruby3-4-main-3.4.8-31.1.hum1	2026-04-09	redhat
redhat	ruby3-3-main-3.3.10-23.1.hum1	2026-04-09	redhat
redhat	patch	2013-08-29	redhat
redhat	patch	2013-08-08	redhat
redhat	patch	2013-07-09	redhat
redhat	ruby-0:1.8.7.352-10.el6_4	2013-03-07	redhat
redhat	ruby-0:1.8.5-29.el5_9	2013-03-07	redhat

Patches are aggregated from vendor advisories (Red Hat, Microsoft, Cisco, GitHub) and package ecosystems (OSV, GHSA). Multiple rows for the same upstream release have been deduplicated.

Affected Packages

(1 across 1 ecosystem)

Maven(1)

Package	Vulnerable range	Fixed in	Dependents
org.jruby:jruby	0.8.3 ... 1.7.2 (67 versions)	1.7.3	—

All Vendor Advisories

(9)

Every vendor that published an advisory referencing this CVE — pulled from our cve_vendor_advisories aggregation. Click any row for the vendor's original advisory page.

Data Freshness Timeline

(refreshed 15× in last 7d / 20× in last 30d)

Every time one of our enrichment pipelines (NVD, MITRE cvelistV5, EPSS, CISA KEV, GHSA, OSV, vendor advisories) ran against this CVE. Most recent first.

2026-06-02 20:10 UTCepss_batch
2026-06-02 20:10 UTCepss_batch
2026-06-01 13:49 UTCepss_batch
2026-06-01 13:49 UTCepss_batch
2026-05-31 22:28 UTCepss_batch
2026-05-31 22:28 UTCepss_batch
2026-05-31 00:14 UTCepss_batch
2026-05-31 00:14 UTCepss_batch
2026-05-29 13:41 UTCepss_batch
2026-05-29 13:41 UTCepss_batch
2026-05-29 00:22 UTCEG score recompute
2026-05-29 00:22 UTCVendor advisory
2026-05-28 13:42 UTCepss_batch
2026-05-28 13:42 UTCepss_batch
2026-05-28 13:42 UTCepss_batch
2026-05-27 13:38 UTCepss_batch
2026-05-27 13:38 UTCepss_batch
2026-05-26 07:16 UTCepss_batch
2026-05-26 07:16 UTCepss_batch
2026-05-24 16:43 UTCepss_batch

Frequently asked(4)

What is CVE-2013-1821?

CVE-2013-1821 is a none vulnerability published on April 9, 2013. 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.

When was CVE-2013-1821 disclosed?

CVE-2013-1821 was first published in the National Vulnerability Database on April 9, 2013, with the most recent update on April 29, 2026. EchelonGraph re-ingests CVE updates from NVD on a 2-hour cycle, so this page reflects the latest published state.

Is CVE-2013-1821 actively exploited?

CVE-2013-1821 is not currently on CISA's Known Exploited Vulnerabilities catalog. FIRST EPSS estimates a 96.3% percentile likelihood of exploitation in the next 30 days — higher percentiles indicate greater predicted risk.

How do I remediate CVE-2013-1821?

Patch to the fixed version published by the affected vendor. Where vendor advisories exist for CVE-2013-1821, EchelonGraph cross-links them in the Vendor Advisories panel below — those typically contain the canonical remediation steps, fixed version numbers, and any vendor-specific mitigations.

Dependency Blast Radius

See which npm, PyPI, Go, and Maven packages are affected by CVE-2013-1821

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CVE-2013-1821

📅 Published

🔄 Last Modified

🔗 References (46)