CVE-2006-1931

The HTTP/XMLRPC server in Ruby before 1.8.2 uses blocking sockets, which allows attackers to...

5.0 MediumPublic exploitFix available

The HTTP/XMLRPC server in Ruby before 1.8.2 uses blocking sockets, which allows attackers to cause a denial of service (blocked connections) via a large amount of data.

Exploit likelihood

10.4%Down 2.1 points since Feb 4, 2022

What each source reports

NVD Score used 5.0

The HTTP/XMLRPC server in Ruby before 1.8.2 uses blocking sockets, which allows attackers to cause a denial of service (blocked connections) via a large amount of data.

Record: CVE-2006-1931
CVSS 2.0: 5.0 MediumAV:N/AC:L/Au:N/C:N/I:N/A:P
Updated: 2026-11-02

CVE List No score

The HTTP/XMLRPC server in Ruby before 1.8.2 uses blocking sockets, which allows attackers to cause a denial of service (blocked connections) via a large amount of data.

Record: CVE-2006-1931
Updated: 2026-11-02

EUVDEUVD-2006-1931 No score

The HTTP/XMLRPC server in Ruby before 1.8.2 uses blocking sockets, which allows attackers to cause a denial of service (blocked connections) via a large amount of data.

Record: EUVD-2006-1931
Updated: 2026-11-03

GitHub AdvisoriesGHSA-j98g-25wq-62h9 No score

The HTTP/XMLRPC server in Ruby before 1.8.2 uses blocking sockets, which allows attackers to...

The HTTP/XMLRPC server in Ruby before 1.8.2 uses blocking sockets, which allows attackers to cause a denial of service (blocked connections) via a large amount of data.

Record: GHSA-j98g-25wq-62h9
Updated: 2026-11-02

Affected products

yukihiro matsumoto ruby

Affected packages

Affected packages
Package	Affected	Fixed
`ruby1.8` Debian:3.1 From an advisory covering 2 CVEs	before 1.8.2-7sarge4, plus listed versions 1.8.2-71.8.2-7sarge11.8.2-7sarge2	1.8.2-7sarge4
`irb` Red Hat:enterprise_linux:4::as	before 0:1.8.1-7.EL4.3	0:1.8.1-7.EL4.3
`ruby` Red Hat:enterprise_linux:4::as	before 0:1.8.1-7.EL4.3	0:1.8.1-7.EL4.3
`ruby-debuginfo` Red Hat:enterprise_linux:4::as	before 0:1.8.1-7.EL4.3	0:1.8.1-7.EL4.3
`ruby-devel` Red Hat:enterprise_linux:4::as	before 0:1.8.1-7.EL4.3	0:1.8.1-7.EL4.3
`ruby-docs` Red Hat:enterprise_linux:4::as	before 0:1.8.1-7.EL4.3	0:1.8.1-7.EL4.3
`ruby-libs` Red Hat:enterprise_linux:4::as	before 0:1.8.1-7.EL4.3	0:1.8.1-7.EL4.3
`ruby-mode` Red Hat:enterprise_linux:4::as	before 0:1.8.1-7.EL4.3	0:1.8.1-7.EL4.3
`ruby-tcltk` Red Hat:enterprise_linux:4::as	before 0:1.8.1-7.EL4.3	0:1.8.1-7.EL4.3
`irb` Red Hat:enterprise_linux:4::desktop	before 0:1.8.1-7.EL4.3	0:1.8.1-7.EL4.3

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Affected packages
Package	Affected	Fixed
`ruby` Red Hat:enterprise_linux:4::desktop	before 0:1.8.1-7.EL4.3	0:1.8.1-7.EL4.3
`ruby-debuginfo` Red Hat:enterprise_linux:4::desktop	before 0:1.8.1-7.EL4.3	0:1.8.1-7.EL4.3
`ruby-devel` Red Hat:enterprise_linux:4::desktop	before 0:1.8.1-7.EL4.3	0:1.8.1-7.EL4.3
`ruby-docs` Red Hat:enterprise_linux:4::desktop	before 0:1.8.1-7.EL4.3	0:1.8.1-7.EL4.3
`ruby-libs` Red Hat:enterprise_linux:4::desktop	before 0:1.8.1-7.EL4.3	0:1.8.1-7.EL4.3
`ruby-mode` Red Hat:enterprise_linux:4::desktop	before 0:1.8.1-7.EL4.3	0:1.8.1-7.EL4.3
`ruby-tcltk` Red Hat:enterprise_linux:4::desktop	before 0:1.8.1-7.EL4.3	0:1.8.1-7.EL4.3
`irb` Red Hat:enterprise_linux:4::es	before 0:1.8.1-7.EL4.3	0:1.8.1-7.EL4.3
`ruby` Red Hat:enterprise_linux:4::es	before 0:1.8.1-7.EL4.3	0:1.8.1-7.EL4.3
`ruby-debuginfo` Red Hat:enterprise_linux:4::es	before 0:1.8.1-7.EL4.3	0:1.8.1-7.EL4.3
`ruby-devel` Red Hat:enterprise_linux:4::es	before 0:1.8.1-7.EL4.3	0:1.8.1-7.EL4.3
`ruby-docs` Red Hat:enterprise_linux:4::es	before 0:1.8.1-7.EL4.3	0:1.8.1-7.EL4.3
`ruby-libs` Red Hat:enterprise_linux:4::es	before 0:1.8.1-7.EL4.3	0:1.8.1-7.EL4.3
`ruby-mode` Red Hat:enterprise_linux:4::es	before 0:1.8.1-7.EL4.3	0:1.8.1-7.EL4.3
`ruby-tcltk` Red Hat:enterprise_linux:4::es	before 0:1.8.1-7.EL4.3	0:1.8.1-7.EL4.3
`irb` Red Hat:enterprise_linux:4::ws	before 0:1.8.1-7.EL4.3	0:1.8.1-7.EL4.3
`ruby` Red Hat:enterprise_linux:4::ws	before 0:1.8.1-7.EL4.3	0:1.8.1-7.EL4.3
`ruby-debuginfo` Red Hat:enterprise_linux:4::ws	before 0:1.8.1-7.EL4.3	0:1.8.1-7.EL4.3
`ruby-devel` Red Hat:enterprise_linux:4::ws	before 0:1.8.1-7.EL4.3	0:1.8.1-7.EL4.3
`ruby-docs` Red Hat:enterprise_linux:4::ws	before 0:1.8.1-7.EL4.3	0:1.8.1-7.EL4.3
`ruby-libs` Red Hat:enterprise_linux:4::ws	before 0:1.8.1-7.EL4.3	0:1.8.1-7.EL4.3
`ruby-mode` Red Hat:enterprise_linux:4::ws	before 0:1.8.1-7.EL4.3	0:1.8.1-7.EL4.3
`ruby-tcltk` Red Hat:enterprise_linux:4::ws	before 0:1.8.1-7.EL4.3	0:1.8.1-7.EL4.3

Public exploits

Links only. Every CVE stores no exploit code.

Public exploits
Source	Link	Date
Exploit-DB	Yukihiro Matsumoto Ruby 1.x - XMLRPC Server Denial of Service	2006-04-21

History

History
Recorded	Changed	Sources
Nov 6, 2026	affected, facts
Nov 3, 2026	aliases	EUVD
Nov 2, 2026	first indexed	CVE List, Exploit-DB, GitHub Advisories, NVD, OSV

Dates are when Every CVE recorded each change. Upstream dates may differ.

In short

CVE-2006-1931 is a medium vulnerability (CVSS 5.0) in Yukihiro Matsumoto Ruby, published April 20, 2006. Public exploit code exists. EPSS puts the chance of exploitation in the next 30 days at 10.4%, the 95th percentile. Fixed in irb 0:1.8.1-7.EL4.3.

References

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