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.
CVE-2013-1821 is a security vulnerability that . Impacting 1 product from ruby-lang organizations running these solutions should prioritize assessment and patching.
Documented in 2013, this vulnerability occurred amid the cloud computing expansion era, where traditional network perimeter security models were being reevaluated. Organizations were transitioning from isolated infrastructure to interconnected systems, creating new attack surfaces that vulnerabilities like this could exploit.
2013-04-09T21:55:01.113
2025-04-11T00:51:21.963
Deferred
CVSSv2: 5.0 (MEDIUM)
AV:N/AC:L/Au:N/C:N/I:N/A:P
10.0
2.9
| Type | Vendor | Product | Version/Range | Vulnerable? |
|---|---|---|---|---|
| Application | ruby-lang | ruby | ≤ 1.9.3 | Yes |
| Application | ruby-lang | ruby | 1.9 | Yes |
| Application | ruby-lang | ruby | 1.9.1 | Yes |
| Application | ruby-lang | ruby | 1.9.2 | Yes |
| Application | ruby-lang | ruby | 1.9.3 | Yes |
| Application | ruby-lang | ruby | 1.9.3 | Yes |
| Application | ruby-lang | ruby | 1.9.3 | Yes |
| Application | ruby-lang | ruby | 1.9.3 | Yes |
| Application | ruby-lang | ruby | 1.9.3 | Yes |
| Application | ruby-lang | ruby | 1.9.3 | Yes |
| Application | ruby-lang | ruby | 2.0 | Yes |
| Application | ruby-lang | ruby | 2.0.0 | Yes |
| Application | ruby-lang | ruby | 2.0.0 | Yes |
| Application | ruby-lang | ruby | 2.0.0 | Yes |
SecUtils normalizes and enriches National Vulnerability Database (NVD) records by standardizing vendor and product identifiers, aggregating vulnerability metadata from both NVD and MITRE sources, and providing structured context for security teams. For ruby-lang's affected products, we extract Common Platform Enumeration (CPE) data, Common Weakness Enumeration (CWE) classifications, CVSS severity metrics, and reference data to enable rapid vulnerability prioritization and asset correlation. This record contains no exploit code, proof-of-concept instructions, or attack methodologies—only defensive intelligence necessary for patch management, risk assessment, and security operations.