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Vulnerability record · CVE-2004-0755 · published 20 October 2004

CVE-2004-0755: Yukihiro matsumoto ruby vulnerability

YYukihiro Matsumoto · Ruby

The FileStore capability in CGI::Session for Ruby before 1.8.1, and possibly PStore, creates files with insecure permissions, which can allow local users to steal session information and hijack sessions.

2.1 CVSS 2.0 Low EPSS 0.36% · top 72.3%
2.1CVSS 2.0 base score
0.36%EPSS exploitation probability, 30 days
NoNot in CISA KEV
1Affected product versions listed by NVD
12References
16 Jun 2026Last modified by NVD

Description

The FileStore capability in CGI::Session for Ruby before 1.8.1, and possibly PStore, creates files with insecure permissions, which can allow local users to steal session information and hijack sessions.

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

Affected products

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

References

LinkTags
http://secunia.com/advisories/12290/
http://www.debian.org/security/2004/dsa-537 PatchVendor Advisory
http://www.gentoo.org/security/en/glsa/glsa-200409-08.xml PatchVendor Advisory
http://www.mandriva.com/security/advisories?name=MDKSA-2004:128
https://exchange.xforce.ibmcloud.com/vulnerabilities/16996
https://oval.cisecurity.org/repository/search/definition/oval%3Aorg.mitre.oval%3Adef%3A11128
http://secunia.com/advisories/12290/
http://www.debian.org/security/2004/dsa-537 PatchVendor Advisory
http://www.gentoo.org/security/en/glsa/glsa-200409-08.xml PatchVendor Advisory
http://www.mandriva.com/security/advisories?name=MDKSA-2004:128
https://exchange.xforce.ibmcloud.com/vulnerabilities/16996
https://oval.cisecurity.org/repository/search/definition/oval%3Aorg.mitre.oval%3Adef%3A11128

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Related vulnerabilities

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

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Source: NIST National Vulnerability Database (record CVE-2004-0755), CISA KEV, FIRST EPSS (scores of 2026-09-26). This page is refreshed as NVD updates the record.