The regular expression engine in JRuby before 1.4.1, when $KCODE is set to 'u', does not…
Priority LOW 24CWE-79Published · Updated
Key facts
- Attack vector
- Network
- Privileges required
- None
- User interaction
- — Not recorded in CVSS 2.0
- Attack complexity
- Medium
- Impact type
- Cross-site scripting
- Confidentiality · integrity · availability
- None · Partial · None
- Fix status
- Fixed
Attack profile from CVSS 2.0 · NVD. Fix status from CNA, GitHub and Red Hat. Impact type from CWE-79.
Summary
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.
Why it matters now
EPSS 0.02218 82nd percentileScored 2026-11-07
Public exploit Yes 1 exploit referenceTagged by NVD
Fix Fixed org.jruby:jruby-core (Maven): 1.4.1Red Hat: 1 advisory
SSVC decision points
Not available: CISA has not published SSVC decision points for this record.
Affected products
| Vendor | Product | Affected versions | Fixed in | Status | Source |
|---|---|---|---|---|---|
| — | — | all versions | — | No fix listed | CNA |
| — | org.jruby:jruby-core (Maven) | before 1.4.1 | 1.4.1 | Patch available | GHSA-wmq2-jc9m-xp4m |
- — Vendor— Affected all versions Fixed in — No fix listed CNA
- org.jruby:jruby-core (Maven) Vendor— Affected before 1.4.1 Fixed in 1.4.1 Patch available GHSA-wmq2-jc9m-xp4m
CPE configurations NVD · 35
| CPE | Versions | Role | Vendor |
|---|---|---|---|
| cpe:2.3:a:jruby:jruby:*:*:*:*:*:*:*:* | up to 1.4.0 | Vulnerable | jruby |
| cpe:2.3:a:jruby:jruby:0.9.0:*:*:*:*:*:*:* | 0.9.0 | Vulnerable | jruby |
| cpe:2.3:a:jruby:jruby:0.9.1:*:*:*:*:*:*:* | 0.9.1 | Vulnerable | jruby |
| cpe:2.3:a:jruby:jruby:0.9.2:*:*:*:*:*:*:* | 0.9.2 | Vulnerable | jruby |
| cpe:2.3:a:jruby:jruby:0.9.8:*:*:*:*:*:*:* | 0.9.8 | Vulnerable | jruby |
| cpe:2.3:a:jruby:jruby:0.9.9:*:*:*:*:*:*:* | 0.9.9 | Vulnerable | jruby |
| cpe:2.3:a:jruby:jruby:1.0.0:*:*:*:*:*:*:* | 1.0.0 | Vulnerable | jruby |
| cpe:2.3:a:jruby:jruby:1.0.0:rc1:*:*:*:*:*:* | 1.0.0 rc1 | Vulnerable | jruby |
| cpe:2.3:a:jruby:jruby:1.0.0:rc2:*:*:*:*:*:* | 1.0.0 rc2 | Vulnerable | jruby |
| cpe:2.3:a:jruby:jruby:1.0.0:rc3:*:*:*:*:*:* | 1.0.0 rc3 | Vulnerable | jruby |
- cpe:2.3:a:jruby:jruby:*:*:*:*:*:*:*:* Versions up to 1.4.0 Vulnerable ·jruby
- cpe:2.3:a:jruby:jruby:0.9.0:*:*:*:*:*:*:* Versions 0.9.0 Vulnerable ·jruby
- cpe:2.3:a:jruby:jruby:0.9.1:*:*:*:*:*:*:* Versions 0.9.1 Vulnerable ·jruby
- cpe:2.3:a:jruby:jruby:0.9.2:*:*:*:*:*:*:* Versions 0.9.2 Vulnerable ·jruby
- cpe:2.3:a:jruby:jruby:0.9.8:*:*:*:*:*:*:* Versions 0.9.8 Vulnerable ·jruby
- cpe:2.3:a:jruby:jruby:0.9.9:*:*:*:*:*:*:* Versions 0.9.9 Vulnerable ·jruby
- cpe:2.3:a:jruby:jruby:1.0.0:*:*:*:*:*:*:* Versions 1.0.0 Vulnerable ·jruby
- cpe:2.3:a:jruby:jruby:1.0.0:rc1:*:*:*:*:*:* Versions 1.0.0 rc1 Vulnerable ·jruby
- cpe:2.3:a:jruby:jruby:1.0.0:rc2:*:*:*:*:*:* Versions 1.0.0 rc2 Vulnerable ·jruby
- cpe:2.3:a:jruby:jruby:1.0.0:rc3:*:*:*:*:*:* Versions 1.0.0 rc3 Vulnerable ·jruby
Show 25 more CPE
| CPE | Versions | Role | Vendor |
|---|---|---|---|
| cpe:2.3:a:jruby:jruby:1.0.1:*:*:*:*:*:*:* | 1.0.1 | Vulnerable | jruby |
| cpe:2.3:a:jruby:jruby:1.0.2:*:*:*:*:*:*:* | 1.0.2 | Vulnerable | jruby |
| cpe:2.3:a:jruby:jruby:1.0.3:*:*:*:*:*:*:* | 1.0.3 | Vulnerable | jruby |
| cpe:2.3:a:jruby:jruby:1.1:*:*:*:*:*:*:* | 1.1 | Vulnerable | jruby |
| cpe:2.3:a:jruby:jruby:1.1:beta1:*:*:*:*:*:* | 1.1 beta1 | Vulnerable | jruby |
| cpe:2.3:a:jruby:jruby:1.1:rc1:*:*:*:*:*:* | 1.1 rc1 | Vulnerable | jruby |
| cpe:2.3:a:jruby:jruby:1.1:rc2:*:*:*:*:*:* | 1.1 rc2 | Vulnerable | jruby |
| cpe:2.3:a:jruby:jruby:1.1:rc3:*:*:*:*:*:* | 1.1 rc3 | Vulnerable | jruby |
| cpe:2.3:a:jruby:jruby:1.1.1:*:*:*:*:*:*:* | 1.1.1 | Vulnerable | jruby |
| cpe:2.3:a:jruby:jruby:1.1.2:*:*:*:*:*:*:* | 1.1.2 | Vulnerable | jruby |
| cpe:2.3:a:jruby:jruby:1.1.3:*:*:*:*:*:*:* | 1.1.3 | Vulnerable | jruby |
| cpe:2.3:a:jruby:jruby:1.1.4:*:*:*:*:*:*:* | 1.1.4 | Vulnerable | jruby |
| cpe:2.3:a:jruby:jruby:1.1.5:*:*:*:*:*:*:* | 1.1.5 | Vulnerable | jruby |
| cpe:2.3:a:jruby:jruby:1.1.6:*:*:*:*:*:*:* | 1.1.6 | Vulnerable | jruby |
| cpe:2.3:a:jruby:jruby:1.1.6:rc1:*:*:*:*:*:* | 1.1.6 rc1 | Vulnerable | jruby |
| cpe:2.3:a:jruby:jruby:1.2.0:*:*:*:*:*:*:* | 1.2.0 | Vulnerable | jruby |
| cpe:2.3:a:jruby:jruby:1.2.0:rc1:*:*:*:*:*:* | 1.2.0 rc1 | Vulnerable | jruby |
| cpe:2.3:a:jruby:jruby:1.2.0:rc2:*:*:*:*:*:* | 1.2.0 rc2 | Vulnerable | jruby |
| cpe:2.3:a:jruby:jruby:1.3.0:*:*:*:*:*:*:* | 1.3.0 | Vulnerable | jruby |
| cpe:2.3:a:jruby:jruby:1.3.0:rc1:*:*:*:*:*:* | 1.3.0 rc1 | Vulnerable | jruby |
| cpe:2.3:a:jruby:jruby:1.3.0:rc2:*:*:*:*:*:* | 1.3.0 rc2 | Vulnerable | jruby |
| cpe:2.3:a:jruby:jruby:1.3.1:*:*:*:*:*:*:* | 1.3.1 | Vulnerable | jruby |
| cpe:2.3:a:jruby:jruby:1.4.0:rc1:*:*:*:*:*:* | 1.4.0 rc1 | Vulnerable | jruby |
| cpe:2.3:a:jruby:jruby:1.4.0:rc2:*:*:*:*:*:* | 1.4.0 rc2 | Vulnerable | jruby |
| cpe:2.3:a:jruby:jruby:1.4.0:rc3:*:*:*:*:*:* | 1.4.0 rc3 | Vulnerable | jruby |
- cpe:2.3:a:jruby:jruby:1.0.1:*:*:*:*:*:*:* Versions 1.0.1 Vulnerable ·jruby
- cpe:2.3:a:jruby:jruby:1.0.2:*:*:*:*:*:*:* Versions 1.0.2 Vulnerable ·jruby
- cpe:2.3:a:jruby:jruby:1.0.3:*:*:*:*:*:*:* Versions 1.0.3 Vulnerable ·jruby
- cpe:2.3:a:jruby:jruby:1.1:*:*:*:*:*:*:* Versions 1.1 Vulnerable ·jruby
- cpe:2.3:a:jruby:jruby:1.1:beta1:*:*:*:*:*:* Versions 1.1 beta1 Vulnerable ·jruby
- cpe:2.3:a:jruby:jruby:1.1:rc1:*:*:*:*:*:* Versions 1.1 rc1 Vulnerable ·jruby
- cpe:2.3:a:jruby:jruby:1.1:rc2:*:*:*:*:*:* Versions 1.1 rc2 Vulnerable ·jruby
- cpe:2.3:a:jruby:jruby:1.1:rc3:*:*:*:*:*:* Versions 1.1 rc3 Vulnerable ·jruby
- cpe:2.3:a:jruby:jruby:1.1.1:*:*:*:*:*:*:* Versions 1.1.1 Vulnerable ·jruby
- cpe:2.3:a:jruby:jruby:1.1.2:*:*:*:*:*:*:* Versions 1.1.2 Vulnerable ·jruby
- cpe:2.3:a:jruby:jruby:1.1.3:*:*:*:*:*:*:* Versions 1.1.3 Vulnerable ·jruby
- cpe:2.3:a:jruby:jruby:1.1.4:*:*:*:*:*:*:* Versions 1.1.4 Vulnerable ·jruby
- cpe:2.3:a:jruby:jruby:1.1.5:*:*:*:*:*:*:* Versions 1.1.5 Vulnerable ·jruby
- cpe:2.3:a:jruby:jruby:1.1.6:*:*:*:*:*:*:* Versions 1.1.6 Vulnerable ·jruby
- cpe:2.3:a:jruby:jruby:1.1.6:rc1:*:*:*:*:*:* Versions 1.1.6 rc1 Vulnerable ·jruby
- cpe:2.3:a:jruby:jruby:1.2.0:*:*:*:*:*:*:* Versions 1.2.0 Vulnerable ·jruby
- cpe:2.3:a:jruby:jruby:1.2.0:rc1:*:*:*:*:*:* Versions 1.2.0 rc1 Vulnerable ·jruby
- cpe:2.3:a:jruby:jruby:1.2.0:rc2:*:*:*:*:*:* Versions 1.2.0 rc2 Vulnerable ·jruby
- cpe:2.3:a:jruby:jruby:1.3.0:*:*:*:*:*:*:* Versions 1.3.0 Vulnerable ·jruby
- cpe:2.3:a:jruby:jruby:1.3.0:rc1:*:*:*:*:*:* Versions 1.3.0 rc1 Vulnerable ·jruby
- cpe:2.3:a:jruby:jruby:1.3.0:rc2:*:*:*:*:*:* Versions 1.3.0 rc2 Vulnerable ·jruby
- cpe:2.3:a:jruby:jruby:1.3.1:*:*:*:*:*:*:* Versions 1.3.1 Vulnerable ·jruby
- cpe:2.3:a:jruby:jruby:1.4.0:rc1:*:*:*:*:*:* Versions 1.4.0 rc1 Vulnerable ·jruby
- cpe:2.3:a:jruby:jruby:1.4.0:rc2:*:*:*:*:*:* Versions 1.4.0 rc2 Vulnerable ·jruby
- cpe:2.3:a:jruby:jruby:1.4.0:rc3:*:*:*:*:*:* Versions 1.4.0 rc3 Vulnerable ·jruby
Remediation
- Fix · GHSA-wmq2-jc9m-xp4m org.jruby:jruby-core (Maven) Fixed in 1.4.1 Advisory →
Red Hat 1 advisory
- RHSA-2011:1456 Released 2011-11-16 · Red Hat rating ModerateJBoss Enterprise SOA Platform 5.2.0 update
- Red Hat JBoss SOA Platform 5.1
Vendor assessments
Red Hat
Red Hat rating: Moderate. Red Hat's page for this CVE →
| Product | Status | Plan or fix |
|---|---|---|
| Red Hat JBoss SOA Platform 5.1 | Fixed | RHSA-2011:1456 |
Timeline
- 2026-10-02 Threatist record created from CVE-2010-1330
- 2026-10-03 Alias added: GHSA-wmq2-jc9m-xp4m
References
More Jruby vulnerabilities
- TI-2025-29269 JRuby-OpenSSL has hostname verification disabled by default CVSS 4.0MEDIUM 5.7
- TI-2011-04166 JRuby before 1.6.5.1 computes hash values without restricting the ability to trigger hash… CVSS 2.0MEDIUM 5.0
- TI-2012-04543 JRuby computes hash values without properly restricting the ability to trigger hash… CVSS 2.0MEDIUM 5.0
Sources
- CVE-2010-1330 · CVE Program
- CVE-2010-1330 · NVD
- FIRST EPSS
- GHSA-wmq2-jc9m-xp4m · GitHub Advisory Database · CC BY 4.0
- CVE-2010-1330 · Red Hat security data · CC BY 4.0
This product uses the NVD API but is not endorsed or certified by the NVD. Sources and licences