Detections
Analytics

CVE-2011-2766

critical

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.

References

https://exchange.xforce.ibmcloud.com/vulnerabilities/69709

http://www.securityfocus.com/bid/49549

http://www.openwall.com/lists/oss-security/2011/09/08/2

http://www.openwall.com/lists/oss-security/2011/09/08/1

http://www.mandriva.com/security/advisories?name=MDVSA-2012:001

http://www.debian.org/security/2011/dsa-2327

Details

Source: Mitre, NVD

Published: 2011-09-23

Updated: 2025-04-11

Risk Information

CVSS v2

Base Score: 7.5

Vector: CVSS2#AV:N/AC:L/Au:N/C:P/I:P/A:P

Severity: High

CVSS v3

Base Score: 9.8

Vector: CVSS:3.0/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H

Severity: Critical

EPSS

EPSS: 0.00718