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CVE-2008-3790

30
FAUCET Score

CVE-2008-3790 describes a denial-of-service vulnerability in the REXML module of Ruby versions 1.8.6, 1.8.7, and 1.9. An unauthenticated attacker can exploit this by submitting a specially crafted XML document containing recursively nested entities, leading to high CPU consumption. This vulnerability has a CVSS score of 5.0 (medium severity) due to its network-based attack vector and potential for partial availability impact. While not actively exploited in the wild (no KEV entry), a public exploit (EDB-32292) exists, though there is minimal community discussion or media coverage.

Impacted Technologies

VendorProductVersion(s)CPE
1.8.6CPE matchmatch criteria
cpe:2.3:a:ruby-lang:ruby:1.8.6:*:*:*:*:*:*:*
1.8.6CPE matchmatch criteria
cpe:2.3:a:ruby-lang:ruby:1.8.6:p110:*:*:*:*:*:*
1.8.6CPE matchmatch criteria
cpe:2.3:a:ruby-lang:ruby:1.8.6:p111:*:*:*:*:*:*
1.8.6CPE matchmatch criteria
cpe:2.3:a:ruby-lang:ruby:1.8.6:p114:*:*:*:*:*:*
1.8.6CPE matchmatch criteria
cpe:2.3:a:ruby-lang:ruby:1.8.6:p230:*:*:*:*:*:*

CVSS Data

CVSS version used by this source: 2.0

5.0MEDIUM

AV:N/AC:L/Au:N/C:N/I:N/A:P

Confidentiality Impact
NONE
Integrity Impact
NONE
Availability Impact
PARTIAL
Access Vector
NETWORK
Access Complexity
LOW
Authentication
NONE
Exploitability Score
10.0
Impact Score
2.9
CvssVersion
2.0

Exploit Intelligence

EPSS Score
15.20%
Probability of exploitation in next 30 days
EPSS Percentile
96.4%
Percentile rank of EPSS score among Peer Group
As of 2026-07-27
Model: v2026.06.15
ExploitDB: EDB-32292 · Aug 23, 2008
This CVE's current EPSS score of 0.1520 is in the 96th percentile among its peer group of 23,705 CVEs.

Social Chatter

The average CVE in this peer group has 0.0 Twitter, 0.0 Reddit, 0.1 Bluesky, 0.0 Mastodon, and 0.4 GitHub mentions.

Media Mentions

No media coverage found for this CVE.

The average CVE in this peer group has 0.0 InfoSec Media, 0.0 Vendor Blog, and 0.0 Security Researcher mentions.

Remediation

Patch Available

Vendor Patches (2)

redhatpatch availablevia redhat_api
Product: Red Hat Enterprise Linux 4Fixed in: ruby-0:1.8.1-7.el4_7.1
View patch
redhatpatch availablevia redhat_api
Product: Red Hat Enterprise Linux 5Fixed in: ruby-0:1.8.5-5.el5_2.5
View patch

Vendor Advisories (1)

redhatCVE-2008-3790Moderate

ruby: DoS vulnerability in the REXML module

Aug 23, 2008

References

groups.google.com / group/comp.lang.ruby/browse_thread/thread/19f69e8a081fc0d1/e138e014b74352ca
lists.apple.com / archives/security-announce/2009/May/msg00002.html
secunia.com / advisories/31602
secunia.com / advisories/32165
secunia.com / advisories/32219
secunia.com / advisories/32255
secunia.com / advisories/32256
secunia.com / advisories/32371
secunia.com / advisories/33178
secunia.com / advisories/33185
secunia.com / advisories/35074
security.gentoo.org / glsa/glsa-200812-17.xml
exchange.xforce.ibmcloud.com / vulnerabilities/44628
oval.cisecurity.org / repository/search/definition/oval%3Aorg.mitre.oval%3Adef%3A10393
support.apple.com / kb/HT3549
support.avaya.com / elmodocs2/security/ASA-2008-424.htm
usn.ubuntu.com / 651-1
usn.ubuntu.com / 691-1
redhat.com / archives/fedora-package-announce/2008-October/msg00259.html
redhat.com / archives/fedora-package-announce/2008-October/msg00299.html
weblog.rubyonrails.org / 2008/9/3/rails-2-0-4-maintenance-release
debian.org / security/2008/dsa-1651
debian.org / security/2008/dsa-1652
openwall.com / lists/oss-security/2008/08/25/4
openwall.com / lists/oss-security/2008/08/26/1
openwall.com / lists/oss-security/2008/08/26/4
redhat.com / support/errata/RHSA-2008-0897.html
ruby-lang.org / en/news/2008/08/23/dos-vulnerability-in-rexml
ExploitPatch
ruby-lang.org / security/20080823rexml/rexml-expansion-fix.rb
Patch
securityfocus.com / bid/30802
securitytracker.com / id
us-cert.gov / cas/techalerts/TA09-133A.html
US Government Resource
vupen.com / english/advisories/2008/2428
vupen.com / english/advisories/2008/2483
vupen.com / english/advisories/2009/1297