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CVE-2011-2766
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…
High7.5EPSS 7.2%
- Published
- Updated
- Reserved
- Assigned by
- mitre
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.
Scores
| Scored by | CVSS | Score | Vector |
|---|---|---|---|
| NVDNVD · Modified | 2.0 | High7.5 | AV:N/AC:L/Au:N/C:P/I:P/A:P |
- EPSS (exploitation in 30 days)
- 7.2% · top 5.7% of all CVEs (3 Nov 2026)
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The list uses the assigner's score when there is one, then CISA's, then NVD's: High 7.5.
Weakness
Affected products
n/a
- affected n/a
References (11)
- [oss-security] 20110908 Re: CVE Request -- libfcgi-perl / perl-FCGI: Certain environment variables shared between first and subsequent HTTP requests (opens in a new tab)mailing-listx_refsource_MLISTx_transferred
- http://bugs.debian.org/cgi-bin/bugreport.cgi?bug=607479 (opens in a new tab)x_refsource_CONFIRMx_transferred
- [oss-security] 20110908 CVE Request -- libfcgi-perl / perl-FCGI: Certain environment variables shared between first and subsequent HTTP requests (opens in a new tab)mailing-listx_refsource_MLISTx_transferred
- perlfast-cgi-security-bypass(69709) (opens in a new tab)vdb-entryx_refsource_XFx_transferred
- https://bugzilla.redhat.com/show_bug.cgi?id=736604 (opens in a new tab)x_refsource_CONFIRMx_transferred
- openSUSE-SU-2012:0036 (opens in a new tab)vendor-advisoryx_refsource_SUSEx_transferred
- https://rt.cpan.org/Public/Bug/Display.html?id=68380 (opens in a new tab)x_refsource_CONFIRMx_transferred
- 49549 (opens in a new tab)vdb-entryx_refsource_BIDx_transferred
- openSUSE-SU-2012:0004 (opens in a new tab)vendor-advisoryx_refsource_SUSEx_transferred
- DSA-2327 (opens in a new tab)vendor-advisoryx_refsource_DEBIANx_transferred
- MDVSA-2012:001 (opens in a new tab)vendor-advisoryx_refsource_MANDRIVAx_transferred
Sources
The same CVE in the primary databases and aggregators, to check against.
- CVE.org record (opens in a new tab)
- CVE List JSON (GitHub) (opens in a new tab)
- NVD (opens in a new tab)
- FIRST EPSS (opens in a new tab)
- OSV.dev (opens in a new tab)
- GitHub Advisories (opens in a new tab)
- CIRCL Vulnerability-Lookup (opens in a new tab)
Badge for a README or a ticket
[](https://trackcve.app/cve/CVE-2011-2766)Record last updated .