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CVE-2010-1330

19
FAUCET Score

CVE-2010-1330 describes a cross-site scripting (XSS) vulnerability in JRuby versions prior to 1.4.1. This flaw arises when the $KCODE is set to 'u', allowing attackers to inject malicious scripts via crafted strings that exploit improper handling of characters following UTF-8 characters. The vulnerability has a CVSS score of 4.3, indicating medium attack complexity and partial impact to integrity, with no impact on confidentiality or availability. There is no evidence of active exploitation, publicly available exploit code (Metasploit, Nuclei, ExploitDB), or significant community discussion or media coverage surrounding this CVE.

Impacted Technologies

VendorProductVersion(s)CPE
<= 1.4.0CPE matchmatch criteria
cpe:2.3:a:jruby:jruby:*:*:*:*:*:*:*:*
0.9.0CPE matchmatch criteria
cpe:2.3:a:jruby:jruby:0.9.0:*:*:*:*:*:*:*
0.9.1CPE matchmatch criteria
cpe:2.3:a:jruby:jruby:0.9.1:*:*:*:*:*:*:*
0.9.2CPE matchmatch criteria
cpe:2.3:a:jruby:jruby:0.9.2:*:*:*:*:*:*:*
0.9.8CPE matchmatch criteria
cpe:2.3:a:jruby:jruby:0.9.8:*:*:*:*:*:*:*

CVSS Data

CVSS version used by this source: 2.0

4.3MEDIUM

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

Confidentiality Impact
NONE
Integrity Impact
PARTIAL
Availability Impact
NONE
Access Vector
NETWORK
Access Complexity
MEDIUM
Authentication
NONE
Exploitability Score
8.6
Impact Score
2.9
CvssVersion
2.0

Exploit Intelligence

EPSS Score
2.22%
Probability of exploitation in next 30 days
EPSS Percentile
80.8%
Percentile rank of EPSS score among Peer Group
As of 2026-07-25
Model: v2026.06.15
This CVE's current EPSS score of 0.0222 is in the 69th percentile among its peer group of 19,955 CVEs.

Social Chatter

The average CVE in this peer group has 0.0 Twitter, 0.0 Reddit, 0.0 Bluesky, 0.0 Mastodon, and 0.2 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)

mavenpatch availablevia ghsa
Product: org.jruby:jruby-coreFixed in: 1.4.1
redhatpatch availablevia redhat_api
Product: Red Hat JBoss SOA Platform 5.1
View patch

Vendor Advisories (2)

mavenGHSA-wmq2-jc9m-xp4mmedium

Cross-site Scripting in in JRuby

May 2, 2022
redhatCVE-2010-1330Moderate

jruby: XSS in the regular expression engine when processing invalid UTF-8 byte sequences

Apr 26, 2010

References

rhn.redhat.com / errata/RHSA-2011-1456.html
bugs.gentoo.org / show_bug.cgi
bugzilla.redhat.com / show_bug.cgi
secunia.com / advisories/46891
Vendor Advisory
exchange.xforce.ibmcloud.com / vulnerabilities/80277
jruby.org / 2010/04/26/jruby-1-4-1-xss-vulnerability.html
ExploitPatchVendor Advisory
osvdb.org / 77297