CVE-2013-1812

Exp

The ruby-openid gem before 2.2.2 for Ruby allows remote OpenID providers to cause a denial of service (CPU consumption) via (1) a large XRDS document or (2) an XML Entity Expansion (XEE) attack.

Published: 2013-12-12 Last update: 2026-04-29 Assigner: [email protected] Source: [email protected]
NVD Status：Modified，CVE State: published
View at NVD, CVE.org, EUVD

CVE-2013-1812 is rated High Exploit Risk (61.6/100): CVSS Medium severity, with medium exploitation likelihood (EPSS 2.13%). 1 public exploit reference(s) are indexed (Exploit-DB). EPSS rose +1.60% over the last day, indicating growing attacker interest. Public exploits are available—assess exposure, apply mitigations, and prioritize patching.

Risk is dynamic; we continuously reassess and refresh what is shown on this page as upstream context changes.

Public exploit references (Exploit-DB) for CVE-2013-1812

EDB-ID Source Kind Published Link
— nvd_ref exploit_tag Exploit-DB ↗

Exploit prediction scoring system (EPSS) score for CVE-2013-1812

EPSS lead: Daily EPSS estimates relative likelihood of exploitation; percentile ranks this CVE among scored vulnerabilities (higher = more severe relative rank).

# Date Old EPSS score New EPSS score Delta (New - Old)
1 2026-06-15 0.53% 2.13% +1.60%
2 2025-03-30 1.03% 0.53% -0.50%
3 2025-03-29 — 1.03% —

Full EPSS history (8 records total)

Common vulnerability scoring system (CVSS) metrics for CVE-2013-1812

CVSS metrics for this CVE.

Base score Version Severity Vector Exploitability Impact Score source
4.3 2.0 MEDIUM
AV:N/AC:M/Au:N/C:N/I:N/A:P Click to expand
Access vector (AV:N)
Can be exploited remotely over network reachability.
Access complexity (AC:M)
Exploitation needs some favorable conditions, but not exceptional ones.
Authentication (AU:N)
No authentication is required.
Confidentiality impact (C:N)
No confidentiality impact.
Integrity impact (I:N)
No integrity impact.
Availability impact (A:P)
Partial availability impact.
 8.6 2.9 [email protected]

Weakness enumeration for CVE-2013-1812

GitHub Security Advisory for CVE-2013-1812

GHSA-6c8p-qphv-668v · Severity: medium · Ecosystem: rubygems — Denial of service in ruby-openid

OS Trackers for CVE-2013-1812

vendor priority summary link
debian not yet assigned CVE-2013-1812 not yet assigned priority: Debian including 1 source packages (ruby-openid), 5 status rows across 5 suites (bookworm, bullseye, forky, sid, trixie): resolved 5. https://security-tracker.debian.org/tracker/CVE-2013-1812
gentoo normal CVE-2013-1812: 1 GLSA(s) (201405-14), 1 atom(s) (dev-ruby/ruby-openid); latest impact normal. https://bugs.gentoo.org/buglist.cgi?quicksearch=CVE-2013-1812
ubuntu medium CVE-2013-1812 medium priority: Ubuntu including 2 source packages (libopenid-ruby, ruby-openid), 14 status rows across 7 suites (hardy, lucid, oneiric, precise, quantal, raring, upstream): DNE 7, released 5, ignored 1, not-affected 1. https://ubuntu.com/security/CVE-2013-1812

Affected software / configurations for CVE-2013-1812

Vendor Product Version Raw CPE
fedoraproject fedora 17 cpe:2.3:o:fedoraproject:fedora:17:*:*:*:*:*:*:*
fedoraproject fedora 18 cpe:2.3:o:fedoraproject:fedora:18:*:*:*:*:*:*:*
janrain ruby-openid <= 2.2.1 cpe:2.3:a:janrain:ruby-openid:*:-:-:*:-:ruby:*:*
janrain ruby-openid 2.2.0 cpe:2.3:a:janrain:ruby-openid:2.2.0:-:-:*:-:ruby:*:*

References for CVE-2013-1812

cvelogic Threat Intelligence