{"id":"CVE-2011-2766","aliases":["DEBIAN-CVE-2011-2766","DSA-2327-1","EUVD-2011-2740","GHSA-57h3-ccpr-f6f8","openSUSE-SU-2024:10387-1"],"status":"published","title":"The FCGI (aka Fast CGI) module 0.70 through 0.73 for Perl, as used by CGI::Fast, uses environment...","description":"The FCGI (aka Fast CGI) module 0.70 through 0.73 for Perl, as used by CGI::Fast, uses environment variable values from one request during processing of a later request, which allows remote attackers to bypass authentication via crafted HTTP headers.","severity":{"version":"2.0","score":7.5,"vector":"AV:N/AC:L/Au:N/C:P/I:P/A:P","level":"high","assessor":"primary","from":"nvd"},"epss":{"day":"2026-11-07","score":0.07238,"percentile":0.94366,"model":"v2026.06.15"},"facts":{"in_kev":false,"known_exploited":false,"public_exploit":false,"fix_available":true},"cwes":["CWE-287"],"published":"2011-09-23T10:00:00Z","modified":"2026-10-23T17:47:31Z","fixes":[{"ecosystem":"Debian:12","package":"libfcgi-perl","fixed_in":["0.73-2"],"sources":["osv"]},{"ecosystem":"Debian:13","package":"libfcgi-perl","fixed_in":["0.73-2"],"sources":["osv"]},{"ecosystem":"Debian:14","package":"libfcgi-perl","fixed_in":["0.73-2"],"sources":["osv"]},{"ecosystem":"Debian:6.0","package":"libfcgi-perl","fixed_in":["0.71-1+squeeze1"],"sources":["osv"]},{"ecosystem":"openSUSE:Tumbleweed","package":"FastCGI","fixed_in":["2.4.0-171.10"],"sources":["osv"]}],"affected":[{"source":"osv","ecosystem":"Debian:12","package":"libfcgi-perl","ranges":[{"type":"ECOSYSTEM","events":[{"introduced":"0"},{"fixed":"0.73-2"}]}]},{"source":"osv","ecosystem":"Debian:13","package":"libfcgi-perl","ranges":[{"type":"ECOSYSTEM","events":[{"introduced":"0"},{"fixed":"0.73-2"}]}]},{"source":"osv","ecosystem":"Debian:14","package":"libfcgi-perl","ranges":[{"type":"ECOSYSTEM","events":[{"introduced":"0"},{"fixed":"0.73-2"}]}]},{"source":"osv","ecosystem":"Debian:6.0","package":"libfcgi-perl","ranges":[{"type":"ECOSYSTEM","events":[{"introduced":"0"},{"fixed":"0.71-1+squeeze1"}]}],"versions":["0.71-1"]},{"source":"osv","ecosystem":"openSUSE:Tumbleweed","package":"FastCGI","ranges":[{"type":"ECOSYSTEM","events":[{"introduced":"0"},{"fixed":"2.4.0-171.10"}]}]}],"products":[{"vendor":"debian","product":"debian_linux"},{"vendor":"fast_cgi_project","product":"fast_cgi"}],"references":[{"url":"http://www.openwall.com/lists/oss-security/2011/09/08/2","tags":["mailing-list","x_refsource_MLIST","x_transferred","Mailing List","Third Party Advisory","advisory","article"]},{"url":"http://bugs.debian.org/cgi-bin/bugreport.cgi?bug=607479","tags":["x_refsource_CONFIRM","x_transferred","Exploit","Issue Tracking","Mailing List","Third Party Advisory","advisory","article","evidence","report"]},{"url":"http://www.openwall.com/lists/oss-security/2011/09/08/1","tags":["mailing-list","x_refsource_MLIST","x_transferred","Mailing List","Third Party Advisory","advisory","article"]},{"url":"https://exchange.xforce.ibmcloud.com/vulnerabilities/69709","tags":["vdb-entry","x_refsource_XF","x_transferred","Third Party Advisory","VDB Entry","advisory"]},{"url":"https://bugzilla.redhat.com/show_bug.cgi?id=736604","tags":["x_refsource_CONFIRM","x_transferred","Exploit","Issue Tracking","Third Party Advisory","advisory","evidence","report"]},{"url":"https://hermes.opensuse.org/messages/13155253","tags":["vendor-advisory","x_refsource_SUSE","x_transferred","Broken Link","web"]},{"url":"https://rt.cpan.org/Public/Bug/Display.html?id=68380","tags":["x_refsource_CONFIRM","x_transferred","Exploit","Patch","Third Party Advisory","advisory","evidence","fix"]},{"url":"http://www.securityfocus.com/bid/49549","tags":["vdb-entry","x_refsource_BID","x_transferred","Third Party Advisory","VDB Entry","advisory"]},{"url":"https://hermes.opensuse.org/messages/13154637","tags":["vendor-advisory","x_refsource_SUSE","x_transferred","Broken Link","web"]},{"url":"http://www.debian.org/security/2011/dsa-2327","tags":["vendor-advisory","x_refsource_DEBIAN","x_transferred","Third Party Advisory","advisory"]},{"url":"http://www.mandriva.com/security/advisories?name=MDVSA-2012:001","tags":["vendor-advisory","x_refsource_MANDRIVA","x_transferred","Third Party Advisory","advisory"]},{"url":"https://nvd.nist.gov/vuln/detail/CVE-2011-2766"},{"url":"https://github.com/advisories/GHSA-57h3-ccpr-f6f8"},{"url":"https://security-tracker.debian.org/tracker/CVE-2011-2766","tags":["advisory"]},{"url":"","tags":["advisory"]},{"url":"https://www.suse.com/security/cve/CVE-2011-2766","tags":["web"]}],"sources":{"cve":[{"id":"CVE-2011-2766","description":"The FCGI (aka Fast CGI) module 0.70 through 0.73 for Perl, as used by CGI::Fast, uses environment variable values from one request during processing of a later request, which allows remote attackers to bypass authentication via crafted HTTP headers.","status":"published","published":"2011-09-23T10:00:00Z","modified":"2024-08-06T23:15:30.862Z","updated_at":"2026-11-02T14:35:36.968002Z"}],"euvd":[{"id":"EUVD-2011-2740","description":"The FCGI (aka Fast CGI) module 0.70 through 0.73 for Perl, as used by CGI::Fast, uses environment variable values from one request during processing of a later request, which 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allows remote attackers to bypass authentication via crafted HTTP headers.","status":"published","published":"2011-09-23T10:55:03.24Z","modified":"2026-06-16T23:31:57.633Z","cvss":[{"version":"2.0","score":7.5,"vector":"AV:N/AC:L/Au:N/C:P/I:P/A:P","level":"high","assessor":"primary"}],"cwes":["CWE-287"],"updated_at":"2026-11-02T14:02:09.988332Z"}],"osv":[{"id":"CVE-2011-2766","description":"The FCGI (aka Fast CGI) module 0.70 through 0.73 for Perl, as used by CGI::Fast, uses environment variable values from one request during processing of a later request, which allows remote attackers to bypass authentication via crafted HTTP headers.","status":"published","published":"2011-09-23T10:55:03Z","modified":"2026-04-10T03:41:53.177076Z","updated_at":"2026-11-02T15:43:58.279353Z"},{"id":"DEBIAN-CVE-2011-2766","description":"The FCGI (aka Fast CGI) module 0.70 through 0.73 for Perl, as used by CGI::Fast, uses environment variable values from one request during processing of a later request, which allows remote attackers to bypass authentication via crafted HTTP headers.","status":"published","published":"2011-09-23T10:55:03.24Z","modified":"2026-10-23T17:47:31.785765189Z","updated_at":"2026-11-02T15:45:24.612044Z"},{"id":"DSA-2327-1","title":"libfcgi-perl - authentication bypass","status":"published","published":"2011-10-24T00:00:00Z","modified":"2026-03-09T01:23:15.213694Z","updated_at":"2026-11-02T15:46:15.108335Z"},{"id":"openSUSE-SU-2024:10387-1","title":"FastCGI-2.4.0-171.10 on GA media","description":"These are all security issues fixed in the FastCGI-2.4.0-171.10 package on the GA media of openSUSE Tumbleweed.","status":"published","published":"2024-06-15T00:00:00Z","modified":"2026-02-04T03:49:20.48848Z","updated_at":"2026-11-02T16:58:34.487567Z"}]}}