Back
CVE-2010-1330
The regular expression engine in JRuby before 1.4.1, when $KCODE is set to 'u', does not properly handle characters immediately after a…
- 4.3MediumCVSS base score
- 2.2%Exploitation in 30 daysEPSS · top 17% of all CVEs
- NoKnown exploitednot in CISA's KEV catalog
- NonePublic exploitsnone known yet
Description
The regular expression engine in JRuby before 1.4.1, when $KCODE is set to 'u', does not properly handle characters immediately after a UTF-8 character, which allows remote attackers to conduct cross-site scripting (XSS) attacks via a crafted string.
Timeline
ID reserved
By mitre
- 3 years later
· 3 years later
Published
- 12 years later
· 12 years later
Record updated
Changes after publication (a new score, a public exploit, EPSS crossing 1, 10 or 50 %, leaving KEV) are kept since November 2026; earlier ones are not known.
Scores
| Scored by | CVSS | Score | Vector |
|---|---|---|---|
| NVDNVD · Modified | 2.0 | Medium4.3 | AV:N/AC:M/Au:N/C:N/I:P/A:N |
- EPSS (exploitation in 30 days)
- 2.2% · top 17% of all CVEs (10 Nov 2026)
Loading the EPSS history…
The list uses the assigner's score when there is one, then CISA's, then NVD's: Medium 4.3.
Affected products
n/a
- affected n/a
Affected packages
From reviewed advisories of the GitHub Advisory Database.
- Mavenorg.jruby:jruby-coreGHSA-wmq2-jc9m-xp4m (opens in a new tab)
References
7
- https://bugzilla.redhat.com/show_bug.cgi?id=750306 (opens in a new tab)x_refsource_MISCx_transferred
- RHSA-2011:1456 (opens in a new tab)vendor-advisoryx_refsource_REDHATx_transferred
- https://bugs.gentoo.org/show_bug.cgi?id=317435 (opens in a new tab)x_refsource_MISCx_transferred
- 77297 (opens in a new tab)vdb-entryx_refsource_OSVDBx_transferred
- 46891 (opens in a new tab)third-party-advisoryx_refsource_SECUNIAx_transferred
- http://www.jruby.org/2010/04/26/jruby-1-4-1-xss-vulnerability.html (opens in a new tab)x_refsource_CONFIRMx_transferred
- jruby-expression-engine-xss(80277) (opens in a new tab)vdb-entryx_refsource_XFx_transferred
Sources
The same CVE in the primary databases and aggregators, to check against.
- CVE.org record (opens in a new tab)
- CVE List JSON (GitHub) (opens in a new tab)
- NVD (opens in a new tab)
- FIRST EPSS (opens in a new tab)
- EUVD EUVD-2022-5601 (opens in a new tab)
- OSV.dev (opens in a new tab)
- GitHub Advisory GHSA-wmq2-jc9m-xp4m (opens in a new tab)
- CIRCL Vulnerability-Lookup (opens in a new tab)
Badge for a README or a ticket
[](https://cveledger.app/cve/CVE-2010-1330)Record last updated .