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CVE-2011-2766 Details

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.

Metrics

CVSS 3.x Severity and Vector Strings:

No CVSS 3.x data is available for this CVE.

References to Advisories, Solutions, and Tools

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URL	Source(s)	Tag(s)
http://bugs.debian.org/cgi-bin/bugreport.cgi?bug=607479	CVE	ExploitIssue TrackingMailing ListThird Party Advisory
https://bugzilla.redhat.com/show_bug.cgi?id=736604	CVE	ExploitIssue TrackingThird Party Advisory
https://exchange.xforce.ibmcloud.com/vulnerabilities/69709	CVE	Third Party AdvisoryVDB Entry
https://hermes.opensuse.org/messages/13154637	CVE	Broken Link
https://hermes.opensuse.org/messages/13155253	CVE	Broken Link
https://rt.cpan.org/Public/Bug/Display.html?id=68380	CVE	ExploitPatchThird Party Advisory
http://www.debian.org/security/2011/dsa-2327	CVE	Third Party Advisory
http://www.mandriva.com/security/advisories?name=MDVSA-2012:001	CVE	Third Party Advisory
http://www.openwall.com/lists/oss-security/2011/09/08/1	CVE	Mailing ListThird Party Advisory
http://www.openwall.com/lists/oss-security/2011/09/08/2	CVE	Mailing ListThird Party Advisory
http://www.securityfocus.com/bid/49549	CVE	Third Party AdvisoryVDB Entry
http://bugs.debian.org/cgi-bin/bugreport.cgi?bug=607479	[email protected]	ExploitIssue TrackingMailing ListThird Party Advisory
https://bugzilla.redhat.com/show_bug.cgi?id=736604	[email protected]	ExploitIssue TrackingThird Party Advisory
https://exchange.xforce.ibmcloud.com/vulnerabilities/69709	[email protected]	Third Party AdvisoryVDB Entry
https://hermes.opensuse.org/messages/13154637	[email protected]	Broken Link
https://hermes.opensuse.org/messages/13155253	[email protected]	Broken Link
https://rt.cpan.org/Public/Bug/Display.html?id=68380	[email protected]	ExploitPatchThird Party Advisory
http://www.debian.org/security/2011/dsa-2327	[email protected]	Third Party Advisory
http://www.mandriva.com/security/advisories?name=MDVSA-2012:001	[email protected]	Third Party Advisory
http://www.openwall.com/lists/oss-security/2011/09/08/1	[email protected]	Mailing ListThird Party Advisory
http://www.openwall.com/lists/oss-security/2011/09/08/2	[email protected]	Mailing ListThird Party Advisory
http://www.securityfocus.com/bid/49549	[email protected]	Third Party AdvisoryVDB Entry

see all 22 references

Weakness Enumeration

CWE-ID	CWE Name	Source
CWE-287	Improper Authentication	[email protected]

Affected Products

Product	Versions
fast cgi project fast cgi	>= 0.70, <= 0.73
CPE cpe:2.3:a:fast_cgi_project:fast_cgi::::::perl::* Remediation No remediation found in references.
debian debian linux	5.0 6.0 7.0
CPE cpe:2.3:o:debian:debian_linux:5.0:::::::* cpe:2.3:o:debian:debian_linux:6.0:::::::* cpe:2.3:o:debian:debian_linux:7.0:::::::* Remediation No remediation found in references.

Change History

7 change records found show changes

Date	Action	Recorded By
Jun 16, 2026	CVE Modified	[email protected]
Apr 29, 2026	Status Change	[email protected]
Nov 21, 2024	CVE Modified	CVE
May 14, 2024	CVE Modified	[email protected]
Dec 8, 2020	Modified Analysis	[email protected]
Aug 29, 2017	CVE Modified	[email protected]
Sep 23, 2011	Initial Analysis	[email protected]