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Vulnerability record · CVE-2004-0983 · published 1 March 2005

CVE-2004-0983: Yukihiro matsumoto ruby vulnerability

YYukihiro Matsumoto · Ruby

The CGI module in Ruby 1.6 before 1.6.8, and 1.8 before 1.8.2, allows remote attackers to cause a denial of service (infinite loop and CPU consumption) via a certain HTTP request.

5.0 CVSS 2.0 Medium EPSS 1.9% · top 21.2%
5.0CVSS 2.0 base score
1.9%EPSS exploitation probability, 30 days
NoNot in CISA KEV
5Affected product versions listed by NVD
14References
16 Jun 2026Last modified by NVD

Description

The CGI module in Ruby 1.6 before 1.6.8, and 1.8 before 1.8.2, allows remote attackers to cause a denial of service (infinite loop and CPU consumption) via a certain HTTP request.

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

Affected products

5 vulnerable configurations from NVD's CPE data, grouped by vendor and product.

References

LinkTags
http://www.debian.org/security/2004/dsa-586
http://www.mandriva.com/security/advisories?name=MDKSA-2004:128
http://www.redhat.com/support/errata/RHSA-2004-635.html
http://www.securityfocus.com/bid/11618 PatchVendor Advisory
https://exchange.xforce.ibmcloud.com/vulnerabilities/17985
https://oval.cisecurity.org/repository/search/definition/oval%3Aorg.mitre.oval%3Adef%3A10268
https://usn.ubuntu.com/20-1/
http://www.debian.org/security/2004/dsa-586
http://www.mandriva.com/security/advisories?name=MDKSA-2004:128
http://www.redhat.com/support/errata/RHSA-2004-635.html
http://www.securityfocus.com/bid/11618 PatchVendor Advisory
https://exchange.xforce.ibmcloud.com/vulnerabilities/17985
https://oval.cisecurity.org/repository/search/definition/oval%3Aorg.mitre.oval%3Adef%3A10268
https://usn.ubuntu.com/20-1/

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Same products first, then exploited flaws of the same weakness class.

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Source: NIST National Vulnerability Database (record CVE-2004-0983), CISA KEV, FIRST EPSS (scores of 2026-09-26). This page is refreshed as NVD updates the record.