CVE-2013-1856: n/a vulnerability

CVE-2013-1856: The ActiveSupport::XmlMini_JDOM backend in lib/active_support/xml_mini/jdom.rb in the Active Support compon...

The ActiveSupport::XmlMini_JDOM backend in lib/active_support/xml_mini/jdom.rb in the Active Support component in Ruby on Rails 3.0.x and 3.1.x before 3.1.12 and 3.2.x before 3.2.13, when JRuby is used, does not properly restrict the capabilities of the XML parser, which allows remote attackers to read arbitrary files or cause a denial of service (resource consumption) via vectors involving (1) an external DTD or (2) an external entity declaration in conjunction with an entity reference.

UnknownCVSS not scoredNot KEV-listedUpdatedAug 6, 2024, 15:20 UTC (UTC+00:00)

Security readout for executives and security teams

This flaw affects Ruby on Rails applications running on JRuby when vulnerable Active Support XML parsing is used. A remote attacker could abuse XML features to make the application read local files or consume resources, causing denial of service. The sources identify fixed Rails releases for 3.1 and 3.2 lines. Exposure is most likely in legacy Ruby on Rails 3.0.x, 3.1.x before 3.1.12, or 3.2.x before 3.2.13 deployments that run on JRuby and parse attacker-controlled XML through Active Support. Prioritize remediation for internet-facing or partner-facing legacy Rails-on-JRuby systems that accept XML. The business risk is sensitive file exposure and service disruption, but current public sources here do not confirm active exploitation. Mitigation focus: Upgrade affected Rails 3.1 deployments to 3.1.12 or later.; Upgrade affected Rails 3.2 deployments to 3.2.13 or later.; Check vendor guidance for Rails 3.0.x exposure and supported upgrade paths..

Prepared: Jun 24, 2026, 11:46 UTC (UTC+00:00)

Generated from the cited source records. This long-tail analysis has not been individually reviewed by a named human.

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Vulnerability profileCVE Program record

Severity: Unknown
CVSS: Not scored
Known Exploited: No
Published: Mar 19, 2013, 22:00 UTC (UTC+00:00)

Official CVE source material

CNA and ADP enrichment extracted from CVE v5

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2Source links

CVSS and timeline data

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Source materials

CVE List V5 sourceCVE List V5
[rubyonrails-security] 20130318 [CVE-2013-1856] XML Parsing Vulnerability affecting JRuby usersCVE reference · mailing-list, x_refsource_MLIST

Affected products

Products and packages named in the record

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Weakness

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