HIGH
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
Published Sep 23, 2011
7.5
HIGHCVSS 2.0
EPSS 7.24%
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.
Affected products
No data.
Configuration 1
- ≥ 0.70 · ≤ 0.73
Configuration 2
OR
- 5.0
- 6.0
- 7.0
No data.
No Red Hat product state for this CVE.
No package ranges for this CVE.
Remediation
No remediation recorded yet.
Metrics
No CVSS v4.0 score for this CVE.
No CVSS v3.1 score for this CVE.
No CVSS v3.0 score for this CVE.
7.5 HIGH NVD
AV:N/AC:L/Au:N/C:P/I:P/A:P
Access Vector Network
Access Complexity Low
Authentication None
Confidentiality Impact Partial
Integrity Impact Partial
Availability Impact Partial
This CVE is not in the KEV list.
No CISA SSVC assessment for this CVE yet.
7.24% 0.07238
Estimated probability of exploitation in the wild in the next 30 days (FIRST EPSS). As of Oct 2, 2026.
EPSS probability 0.07238
Score over time
2022–2026- EPSS v2
- EPSS v3
- EPSS v4
- EPSS v5
Percentile over time
- EPSS v2
- EPSS v3
- EPSS v4
- EPSS v5
Table of values (9 key points)
Flat stretches are collapsed; showing up to 120 newest points.
| Date | Score | Percentile | Model |
|---|---|---|---|
| Oct 2, 2026 | 7.24% (0.07238) | 94.15th | v5 (v2026.06.15) |
| Jun 15, 2026 | 7.24% (0.07238) | 93.51th | v5 (v2026.06.15) |
| Mar 17, 2025 | 0.72% (0.00718) | 70.74th | v4 (v2025.03.14) |
| Dec 12, 2024 | 0.32% (0.00323) | 71.53th | v3 (v2023.03.01) |
| Jun 14, 2024 | 0.23% (0.00227) | 61.11th | v3 (v2023.03.01) |
| Mar 7, 2023 | 0.23% (0.00227) | 59.10th | v3 (v2023.03.01) |
| Mar 6, 2023 | 2.17% (0.02172) | 80.77th | v2 (v2022.01.01) |
| Apr 1, 2022 | 2.17% (0.02172) | 78.91th | v2 (v2022.01.01) |
| Feb 4, 2022 | 2.17% (0.02172) | 57.73th | v2 (v2022.01.01) |
Weaknesses (1)
References (11)
- http://bugs.debian.org/cgi-bin/bugreport.cgi?bug=607479 x_refsource_CONFIRMExploitIssue TrackingMailing ListThird Party Advisory
- http://www.debian.org/security/2011/dsa-2327 vendor-advisoryx_refsource_DEBIANThird Party Advisory
- http://www.mandriva.com/security/advisories?name=MDVSA-2012:001 vendor-advisoryx_refsource_MANDRIVAThird Party Advisory
- http://www.openwall.com/lists/oss-security/2011/09/08/1 mailing-listx_refsource_MLISTMailing ListThird Party Advisory
- http://www.openwall.com/lists/oss-security/2011/09/08/2 mailing-listx_refsource_MLISTMailing ListThird Party Advisory
- http://www.securityfocus.com/bid/49549 vdb-entryx_refsource_BIDThird Party AdvisoryVDB Entry
- https://bugzilla.redhat.com/show_bug.cgi?id=736604 x_refsource_CONFIRMExploitIssue TrackingThird Party Advisory
- https://exchange.xforce.ibmcloud.com/vulnerabilities/69709 vdb-entryx_refsource_XFThird Party AdvisoryVDB Entry
- https://hermes.opensuse.org/messages/13154637 vendor-advisoryx_refsource_SUSEBroken Link
- https://hermes.opensuse.org/messages/13155253 vendor-advisoryx_refsource_SUSEBroken Link
- https://rt.cpan.org/Public/Bug/Display.html?id=68380 x_refsource_CONFIRMExploitPatchThird Party Advisory
| Link | Providers | Tags |
|---|---|---|
| http://bugs.debian.org/cgi-bin/bugreport.cgi?bug=607479 | x_refsource_CONFIRMExploitIssue TrackingMailing ListThird Party Advisory | |
| http://www.debian.org/security/2011/dsa-2327 | vendor-advisoryx_refsource_DEBIANThird Party Advisory | |
| http://www.mandriva.com/security/advisories?name=MDVSA-2012:001 | vendor-advisoryx_refsource_MANDRIVAThird Party Advisory | |
| http://www.openwall.com/lists/oss-security/2011/09/08/1 | mailing-listx_refsource_MLISTMailing ListThird Party Advisory | |
| http://www.openwall.com/lists/oss-security/2011/09/08/2 | mailing-listx_refsource_MLISTMailing ListThird Party Advisory | |
| http://www.securityfocus.com/bid/49549 | vdb-entryx_refsource_BIDThird Party AdvisoryVDB Entry | |
| https://bugzilla.redhat.com/show_bug.cgi?id=736604 | x_refsource_CONFIRMExploitIssue TrackingThird Party Advisory | |
| https://exchange.xforce.ibmcloud.com/vulnerabilities/69709 | vdb-entryx_refsource_XFThird Party AdvisoryVDB Entry | |
| https://hermes.opensuse.org/messages/13154637 | vendor-advisoryx_refsource_SUSEBroken Link | |
| https://hermes.opensuse.org/messages/13155253 | vendor-advisoryx_refsource_SUSEBroken Link | |
| https://rt.cpan.org/Public/Bug/Display.html?id=68380 | x_refsource_CONFIRMExploitPatchThird Party Advisory |
Change history (0)
No recorded changes yet.
Sources
CVE.org / MITRE
Status PUBLISHED
Assigner mitre
Published Sep 23, 2011
Updated Aug 6, 2024
Reserved Jul 19, 2011
Link CVE-2011-2766
CISA Vulnrichment
Updated n/a