{"id":"CVE-2008-1891","aliases":["EUVD-2008-1891","GHSA-rhf2-x48g-5wr7","RHSA-2026:7305","RHSA-2026:7307","RHSA-2026:8838"],"status":"published","title":"Directory traversal vulnerability in WEBrick in Ruby 1.8.4 and earlier, 1.8.5 before 1.8.5-p231,...","description":"Directory traversal vulnerability in WEBrick in Ruby 1.8.4 and earlier, 1.8.5 before 1.8.5-p231, 1.8.6 before 1.8.6-p230, 1.8.7 before 1.8.7-p22, and 1.9.0 before 1.9.0-2, when using NTFS or FAT filesystems, allows remote attackers to read arbitrary CGI files via a trailing (1) + (plus), (2) %2b (encoded plus), (3) . (dot), (4) %2e (encoded dot), or (5) %20 (encoded space) character in the URI, possibly related to the WEBrick::HTTPServlet::FileHandler and WEBrick::HTTPServer.new functionality and the :DocumentRoot option.","severity":{"version":"2.0","score":5,"vector":"AV:N/AC:L/Au:N/C:P/I:N/A:N","level":"medium","assessor":"primary","from":"nvd"},"epss":{"day":"2026-11-07","score":0.02789,"percentile":0.86497,"model":"v2026.06.15"},"facts":{"in_kev":false,"known_exploited":false,"public_exploit":false,"fix_available":false},"cwes":["CWE-22"],"published":"2008-04-18T22:00:00Z","modified":"2026-10-06T10:31:19Z","affected":[{"source":"osv","ecosystem":"Red Hat:hummingbird:1","package":"ruby3.3","ranges":[{"type":"ECOSYSTEM","events":[{"introduced":"0"},{"fixed":"0:3.3.10-23.1.hum1"}]}],"bundled":36},{"source":"osv","ecosystem":"Red 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visory"]},{"url":"https://www.ruby-lang.org/en/news/2014/11/13/rexml-dos-cve-2014-8090/","tags":["article"]},{"url":"https://www.cve.org/CVERecord?id=CVE-2015-7551","tags":["advisory"]},{"url":"https://nvd.nist.gov/vuln/detail/CVE-2015-7551","tags":["advisory"]},{"url":"https://bugzilla.redhat.com/show_bug.cgi?id=1461846","tags":["report"]},{"url":"https://www.cve.org/CVERecord?id=CVE-2015-9096","tags":["advisory"]},{"url":"https://nvd.nist.gov/vuln/detail/CVE-2015-9096","tags":["advisory"]},{"url":"https://bugzilla.redhat.com/show_bug.cgi?id=1492012","tags":["report"]},{"url":"https://www.cve.org/CVERecord?id=CVE-2017-10784","tags":["advisory"]},{"url":"https://nvd.nist.gov/vuln/detail/CVE-2017-10784","tags":["advisory"]},{"url":"https://www.ruby-lang.org/en/news/2017/09/14/webrick-basic-auth-escape-sequence-injection-cve-2017-10784/","tags":["article"]},{"url":"https://bugzilla.redhat.com/show_bug.cgi?id=1487552","tags":["report"]},{"url":"https://www.cve.org/CVERecord?id=CVE-2017-14064","tags":["advisory"]},{"url":"https://nvd.nist.gov/vuln/detail/CVE-2017-14064","tags":["advisory"]},{"url":"https://www.ruby-lang.org/en/news/2017/09/14/json-heap-exposure-cve-2017-14064/","tags":["article"]},{"url":"https://bugzilla.redhat.com/show_bug.cgi?id=1561949","tags":["report"]},{"url":"https://www.cve.org/CVERecord?id=CVE-2018-8780","tags":["advisory"]},{"url":"https://nvd.nist.gov/vuln/detail/CVE-2018-8780","tags":["advisory"]},{"url":"https://www.ruby-lang.org/en/news/2018/03/28/poisoned-nul-byte-dir-cve-2018-8780/","tags":["article"]},{"url":"https://bugzilla.redhat.com/show_bug.cgi?id=1789556","tags":["report"]},{"url":"https://www.cve.org/CVERecord?id=CVE-2019-16254","tags":["advisory"]},{"url":"https://nvd.nist.gov/vuln/detail/CVE-2019-16254","tags":["advisory"]},{"url":"https://bugzilla.redhat.com/show_bug.cgi?id=1883623","tags":["report"]},{"url":"https://www.cve.org/CVERecord?id=CVE-2020-25613","tags":["advisory"]},{"url":"https://nvd.nist.gov/vuln/detail/CVE-2020-25613","tags":["advisory"]},{"url":"https://www.ruby-lang.org/en/news/2020/09/29/http-request-smuggling-cve-2020-25613/","tags":["article"]},{"url":"https://bugzilla.redhat.com/show_bug.cgi?id=1947526","tags":["report"]},{"url":"https://www.cve.org/CVERecord?id=CVE-2021-28965","tags":["advisory"]},{"url":"https://nvd.nist.gov/vuln/detail/CVE-2021-28965","tags":["advisory"]},{"url":"https://bugzilla.redhat.com/show_bug.cgi?id=1980126","tags":["report"]},{"url":"https://www.cve.org/CVERecord?id=CVE-2021-31810","tags":["advisory"]},{"url":"https://nvd.nist.gov/vuln/detail/CVE-2021-31810","tags":["advisory"]},{"url":"https://www.ruby-lang.org/en/news/2021/07/07/trusting-pasv-responses-in-net-ftp/","tags":["article"]},{"url":"https://bugzilla.redhat.com/show_bug.cgi?id=2026757","tags":["report"]},{"url":"https://www.cve.org/CVERecord?id=CVE-2021-41819","tags":["advisory"]},{"url":"https://nvd.nist.gov/vuln/detail/CVE-2021-41819","tags":["advisory"]},{"url":"https://bugzilla.redhat.com/show_bug.cgi?id=2075687","tags":["report"]},{"url":"https://www.cve.org/CVERecord?id=CVE-2022-28739","tags":["advisory"]},{"url":"https://nvd.nist.gov/vuln/detail/CVE-2022-28739","tags":["advisory"]},{"url":"http://www.ruby-lang.org/en/news/2022/04/12/buffer-overrun-in-string-to-float-cve-2022-28739/","tags":["article"]},{"url":"https://bugzilla.redhat.com/show_bug.cgi?id=2184061","tags":["report"]},{"url":"https://www.cve.org/CVERecord?id=CVE-2023-28756","tags":["advisory"]},{"url":"https://nvd.nist.gov/vuln/detail/CVE-2023-28756","tags":["advisory"]},{"url":"https://www.ruby-lang.org/en/news/2023/03/30/redos-in-time-cve-2023-28756/","tags":["article"]},{"url":"https://bugzilla.redhat.com/show_bug.cgi?id=2276810","tags":["report"]},{"url":"https://www.cve.org/CVERecord?id=CVE-2024-27282","tags":["advisory"]},{"url":"https://nvd.nist.gov/vuln/detail/CVE-2024-27282","tags":["advisory"]},{"url":"https://www.ruby-lang.org/en/news/2024/04/23/arbitrary-memory-address-read-regexp-cve-2024-27282/","tags":["article"]},{"url":"https://bugzilla.redhat.com/show_bug.cgi?id=2459002","tags":["report"]},{"url":"https://www.cve.org/CVERecord?id=CVE-2026-27820","tags":["advisory"]},{"url":"https://nvd.nist.gov/vuln/detail/CVE-2026-27820","tags":["advisory"]},{"url":"https://github.com/ruby/zlib/security/advisories/GHSA-g857-hhfv-j68w","tags":["article"]},{"url":"https://hackerone.com/reports/3467067","tags":["article"]},{"url":"https://access.redhat.com/errata/RHSA-2026:7307","tags":["advisory"]},{"url":"https://security.access.redhat.com/data/csaf/v2/advisories/2026/rhsa-2026_7307.json","tags":["advisory"]},{"url":"https://access.redhat.com/errata/RHSA-2026:8838","tags":["advisory"]},{"url":"https://security.access.redhat.com/data/csaf/v2/advisories/2026/rhsa-2026_8838.json","tags":["advisory"]}],"sources":{"cve":[{"id":"CVE-2008-1891","description":"Directory traversal vulnerability in WEBrick in Ruby 1.8.4 and earlier, 1.8.5 before 1.8.5-p231, 1.8.6 before 1.8.6-p230, 1.8.7 before 1.8.7-p22, and 1.9.0 before 1.9.0-2, when using NTFS or FAT filesystems, allows remote attackers to read arbitrary CGI files via a trailing (1) + (plus), (2) %2b (encoded plus), (3) . (dot), (4) %2e (encoded dot), or (5) %20 (encoded space) character in the URI, possibly related to the WEBrick::HTTPServlet::FileHandler and WEBrick::HTTPServer.new functionality and the :DocumentRoot option.","status":"published","published":"2008-04-18T22:00:00Z","modified":"2024-08-07T08:41:00.043Z","updated_at":"2026-11-02T14:34:47.71012Z"}],"euvd":[{"id":"EUVD-2008-1891","description":"Directory traversal vulnerability in WEBrick in Ruby 1.8.4 and earlier, 1.8.5 before 1.8.5-p231, 1.8.6 before 1.8.6-p230, 1.8.7 before 1.8.7-p22, and 1.9.0 before 1.9.0-2, when using NTFS or FAT filesystems, allows remote attackers to read arbitrary CGI files via a trailing (1) + (plus), (2) %2b (encoded plus), (3) . (dot), (4) %2e (encoded dot), or (5) %20 (encoded space) character in the URI, possibly related to the WEBrick::HTTPServlet::FileHandler and WEBrick::HTTPServer.new functionality and the :DocumentRoot option.","status":"published","published":"2008-04-18T22:00:00Z","modified":"2024-08-07T08:41:00Z","updated_at":"2026-11-03T01:38:59.221562Z"}],"ghsa":[{"id":"GHSA-rhf2-x48g-5wr7","title":"Directory traversal vulnerability in WEBrick in Ruby 1.8.4 and earlier, 1.8.5 before 1.8.5-p231,...","description":"Directory traversal vulnerability in WEBrick in Ruby 1.8.4 and earlier, 1.8.5 before 1.8.5-p231, 1.8.6 before 1.8.6-p230, 1.8.7 before 1.8.7-p22, and 1.9.0 before 1.9.0-2, when using NTFS or FAT filesystems, allows remote attackers to read arbitrary CGI files via a trailing (1) + (plus), (2) %2b (encoded plus), (3) . (dot), (4) %2e (encoded dot), or (5) %20 (encoded space) character in the URI, possibly related to the WEBrick::HTTPServlet::FileHandler and WEBrick::HTTPServer.new functionality and the :DocumentRoot option.","status":"published","published":"2022-05-01T23:44:32Z","modified":"2025-04-09T03:54:53Z","cwes":["CWE-22"],"updated_at":"2026-11-02T15:00:57.05109Z"}],"nvd":[{"id":"CVE-2008-1891","description":"Directory traversal vulnerability in WEBrick in Ruby 1.8.4 and earlier, 1.8.5 before 1.8.5-p231, 1.8.6 before 1.8.6-p230, 1.8.7 before 1.8.7-p22, and 1.9.0 before 1.9.0-2, when using NTFS or FAT filesystems, allows remote attackers to read arbitrary CGI files via a trailing (1) + (plus), (2) %2b (encoded plus), (3) . (dot), (4) %2e (encoded dot), or (5) %20 (encoded space) character in the URI, possibly related to the WEBrick::HTTPServlet::FileHandler and WEBrick::HTTPServer.new functionality and the :DocumentRoot option.","status":"published","published":"2008-04-18T22:05:00Z","modified":"2026-06-16T22:52:42.007Z","cvss":[{"version":"2.0","score":5,"vector":"AV:N/AC:L/Au:N/C:P/I:N/A:N","level":"medium","assessor":"primary"}],"cwes":["CWE-22"],"updated_at":"2026-11-02T14:01:26.27008Z"}],"osv":[{"id":"RHSA-2026:7305","title":"Red Hat Security Advisory: Red Hat Hardened Images RPMs bug fix and enhancement update","status":"published","published":"2026-04-21T10:09:49Z","modified":"2026-10-06T10:31:19.141484354Z","cvss":[{"version":"3.1","score":7.5,"vector":"CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:H/A:N","level":"high"}],"updated_at":"2026-11-02T15:53:22.928316Z"},{"id":"RHSA-2026:7307","title":"Red Hat Security Advisory: Red Hat Hardened Images RPMs bug fix and enhancement update","status":"published","published":"2026-04-21T10:09:49Z","modified":"2026-10-06T10:31:08.987663145Z","cvss":[{"version":"3.1","score":7.5,"vector":"CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:H/A:N","level":"high"}],"updated_at":"2026-11-02T15:53:22.928316Z"},{"id":"RHSA-2026:8838","title":"Red Hat Security Advisory: Red Hat Hardened Images RPMs bug fix and enhancement update","status":"published","published":"2026-04-21T10:10:33Z","modified":"2026-10-06T10:31:10.808115812Z","cvss":[{"version":"3.1","score":7.5,"vector":"CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:H/A:N","level":"high"}],"updated_at":"2026-11-02T15:53:23.547034Z"}]}}