CGIHandler: sets environmental variable based on user supplied Proxy request header
Published Nov 27, 2019
6.1
MEDIUMCVSS 3.1
EPSS 4.53%
Description
The CGIHandler class in Python before 2.7.12 does not protect against the HTTP_PROXY variable name clash in a CGI script, which could allow a remote attacker to redirect HTTP requests.
Affected products
No data.
Configuration 1
Configuration 2
- 8.0
- 9.0
- 10.0
Configuration 3
- 23
No data.
Red Hat Enterprise Linux 6
python-0:2.6.6-66.el6_8
Fixed · RHSA-2016:1626
Red Hat Enterprise Linux 7
python-0:2.7.5-38.el7_2
Fixed · RHSA-2016:1626
Red Hat Software Collections for Red Hat Enterprise Linux 6
python27-python-0:2.7.8-18.el6
Fixed · RHSA-2016:1628
Red Hat Software Collections for Red Hat Enterprise Linux 6
python33-python-0:3.3.2-18.el6
Fixed · RHSA-2016:1629
Red Hat Software Collections for Red Hat Enterprise Linux 6
rh-python34-python-0:3.4.2-14.el6
Fixed · RHSA-2016:1630
Red Hat Software Collections for Red Hat Enterprise Linux 6.6 EUS
python27-python-0:2.7.8-18.el6
Fixed · RHSA-2016:1628
Red Hat Software Collections for Red Hat Enterprise Linux 6.6 EUS
python33-python-0:3.3.2-18.el6
Fixed · RHSA-2016:1629
Red Hat Software Collections for Red Hat Enterprise Linux 6.6 EUS
rh-python34-python-0:3.4.2-14.el6
Fixed · RHSA-2016:1630
Red Hat Software Collections for Red Hat Enterprise Linux 6.7 EUS
python27-python-0:2.7.8-18.el6
Fixed · RHSA-2016:1628
Red Hat Software Collections for Red Hat Enterprise Linux 6.7 EUS
python33-python-0:3.3.2-18.el6
Fixed · RHSA-2016:1629
Red Hat Software Collections for Red Hat Enterprise Linux 6.7 EUS
rh-python34-python-0:3.4.2-14.el6
Fixed · RHSA-2016:1630
Red Hat Software Collections for Red Hat Enterprise Linux 7
python27-python-0:2.7.8-16.el7
Fixed · RHSA-2016:1628
Red Hat Software Collections for Red Hat Enterprise Linux 7
python33-python-0:3.3.2-16.el7
Fixed · RHSA-2016:1629
Red Hat Software Collections for Red Hat Enterprise Linux 7
rh-python34-python-0:3.4.2-13.el7
Fixed · RHSA-2016:1630
Red Hat Software Collections for Red Hat Enterprise Linux 7
rh-python35-python-0:3.5.1-9.el7
Fixed · RHSA-2016:1627
Red Hat Software Collections for Red Hat Enterprise Linux 7.1 EUS
python27-python-0:2.7.8-16.el7
Fixed · RHSA-2016:1628
Red Hat Software Collections for Red Hat Enterprise Linux 7.1 EUS
python33-python-0:3.3.2-16.el7
Fixed · RHSA-2016:1629
Red Hat Software Collections for Red Hat Enterprise Linux 7.1 EUS
rh-python34-python-0:3.4.2-13.el7
Fixed · RHSA-2016:1630
Red Hat Software Collections for Red Hat Enterprise Linux 7.1 EUS
rh-python35-python-0:3.5.1-9.el7
Fixed · RHSA-2016:1627
Red Hat Software Collections for Red Hat Enterprise Linux 7.2 EUS
python27-python-0:2.7.8-16.el7
Fixed · RHSA-2016:1628
Red Hat Software Collections for Red Hat Enterprise Linux 7.2 EUS
python33-python-0:3.3.2-16.el7
Fixed · RHSA-2016:1629
Red Hat Software Collections for Red Hat Enterprise Linux 7.2 EUS
rh-python34-python-0:3.4.2-13.el7
Fixed · RHSA-2016:1630
Red Hat Software Collections for Red Hat Enterprise Linux 7.2 EUS
rh-python35-python-0:3.5.1-9.el7
Fixed · RHSA-2016:1627
Red Hat Enterprise Linux 4
python
Will not fix
Red Hat Enterprise Linux 5
python
Affected
| Product | Package | State | Advisory |
|---|---|---|---|
| Red Hat Enterprise Linux 6 | python-0:2.6.6-66.el6_8 | Fixed | RHSA-2016:1626 |
| Red Hat Enterprise Linux 7 | python-0:2.7.5-38.el7_2 | Fixed | RHSA-2016:1626 |
| Red Hat Software Collections for Red Hat Enterprise Linux 6 | python27-python-0:2.7.8-18.el6 | Fixed | RHSA-2016:1628 |
| Red Hat Software Collections for Red Hat Enterprise Linux 6 | python33-python-0:3.3.2-18.el6 | Fixed | RHSA-2016:1629 |
| Red Hat Software Collections for Red Hat Enterprise Linux 6 | rh-python34-python-0:3.4.2-14.el6 | Fixed | RHSA-2016:1630 |
| Red Hat Software Collections for Red Hat Enterprise Linux 6.6 EUS | python27-python-0:2.7.8-18.el6 | Fixed | RHSA-2016:1628 |
| Red Hat Software Collections for Red Hat Enterprise Linux 6.6 EUS | python33-python-0:3.3.2-18.el6 | Fixed | RHSA-2016:1629 |
| Red Hat Software Collections for Red Hat Enterprise Linux 6.6 EUS | rh-python34-python-0:3.4.2-14.el6 | Fixed | RHSA-2016:1630 |
| Red Hat Software Collections for Red Hat Enterprise Linux 6.7 EUS | python27-python-0:2.7.8-18.el6 | Fixed | RHSA-2016:1628 |
| Red Hat Software Collections for Red Hat Enterprise Linux 6.7 EUS | python33-python-0:3.3.2-18.el6 | Fixed | RHSA-2016:1629 |
| Red Hat Software Collections for Red Hat Enterprise Linux 6.7 EUS | rh-python34-python-0:3.4.2-14.el6 | Fixed | RHSA-2016:1630 |
| Red Hat Software Collections for Red Hat Enterprise Linux 7 | python27-python-0:2.7.8-16.el7 | Fixed | RHSA-2016:1628 |
| Red Hat Software Collections for Red Hat Enterprise Linux 7 | python33-python-0:3.3.2-16.el7 | Fixed | RHSA-2016:1629 |
| Red Hat Software Collections for Red Hat Enterprise Linux 7 | rh-python34-python-0:3.4.2-13.el7 | Fixed | RHSA-2016:1630 |
| Red Hat Software Collections for Red Hat Enterprise Linux 7 | rh-python35-python-0:3.5.1-9.el7 | Fixed | RHSA-2016:1627 |
| Red Hat Software Collections for Red Hat Enterprise Linux 7.1 EUS | python27-python-0:2.7.8-16.el7 | Fixed | RHSA-2016:1628 |
| Red Hat Software Collections for Red Hat Enterprise Linux 7.1 EUS | python33-python-0:3.3.2-16.el7 | Fixed | RHSA-2016:1629 |
| Red Hat Software Collections for Red Hat Enterprise Linux 7.1 EUS | rh-python34-python-0:3.4.2-13.el7 | Fixed | RHSA-2016:1630 |
| Red Hat Software Collections for Red Hat Enterprise Linux 7.1 EUS | rh-python35-python-0:3.5.1-9.el7 | Fixed | RHSA-2016:1627 |
| Red Hat Software Collections for Red Hat Enterprise Linux 7.2 EUS | python27-python-0:2.7.8-16.el7 | Fixed | RHSA-2016:1628 |
| Red Hat Software Collections for Red Hat Enterprise Linux 7.2 EUS | python33-python-0:3.3.2-16.el7 | Fixed | RHSA-2016:1629 |
| Red Hat Software Collections for Red Hat Enterprise Linux 7.2 EUS | rh-python34-python-0:3.4.2-13.el7 | Fixed | RHSA-2016:1630 |
| Red Hat Software Collections for Red Hat Enterprise Linux 7.2 EUS | rh-python35-python-0:3.5.1-9.el7 | Fixed | RHSA-2016:1627 |
| Red Hat Enterprise Linux 4 | python | Will not fix | n/a |
| Red Hat Enterprise Linux 5 | python | Affected | n/a |
No package ranges for this CVE.
Remediation
No remediation recorded yet.
Metrics
No CVSS v4.0 score for this CVE.
CVSS:3.1/AV:N/AC:L/PR:N/UI:R/S:C/C:L/I:L/A:N
CVSS:3.0/AV:N/AC:L/PR:L/UI:N/S:C/C:N/I:L/A:N
AV:N/AC:M/Au:N/C:P/I:P/A:N
This CVE is not in the KEV list.
No CISA SSVC assessment for this CVE yet.
Estimated probability of exploitation in the wild in the next 30 days (FIRST EPSS). As of Oct 4, 2026.
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 (33 key points)
Flat stretches are collapsed. Showing up to 120 newest points.
| Date | Score | Percentile | Model |
|---|---|---|---|
| Oct 4, 2026 | 4.53% (0.04526) | 91.25th | v5 (v2026.06.15) |
| Jun 15, 2026 | 4.56% (0.04563) | 90.35th | v5 (v2026.06.15) |
| May 1, 2026 | 9.90% (0.09899) | 93.03th | v4 (v2025.03.14) |
| Apr 4, 2026 | 5.90% (0.05904) | 90.57th | v4 (v2025.03.14) |
| Dec 28, 2025 | 9.90% (0.09899) | 92.75th | v4 (v2025.03.14) |
| Dec 27, 2025 | 6.00% (0.06003) | 90.43th | v4 (v2025.03.14) |
| Dec 18, 2025 | 10.14% (0.10141) | 92.86th | v4 (v2025.03.14) |
| Dec 1, 2025 | 7.04% (0.07044) | 91.18th | v4 (v2025.03.14) |
| Oct 28, 2025 | 9.14% (0.09141) | 92.31th | v4 (v2025.03.14) |
| Oct 27, 2025 | 5.52% (0.05520) | 89.83th | v4 (v2025.03.14) |
| Oct 1, 2025 | 9.14% (0.09141) | 92.41th | v4 (v2025.03.14) |
| Aug 20, 2025 | 5.41% (0.05407) | 89.74th | v4 (v2025.03.14) |
| Aug 18, 2025 | 8.00% (0.08001) | 91.72th | v4 (v2025.03.14) |
| Jul 30, 2025 | 6.80% (0.06797) | 90.92th | v4 (v2025.03.14) |
| Jul 23, 2025 | 12.31% (0.12315) | 93.55th | v4 (v2025.03.14) |
| Jul 13, 2025 | 9.95% (0.09949) | 92.67th | v4 (v2025.03.14) |
| Jun 19, 2025 | 12.50% (0.12501) | 93.58th | v4 (v2025.03.14) |
| Apr 7, 2025 | 9.04% (0.09035) | 91.87th | v4 (v2025.03.14) |
| Mar 30, 2025 | 4.25% (0.04253) | 87.74th | v4 (v2025.03.14) |
| Mar 29, 2025 | 16.61% (0.16615) | 91.55th | v4 (v2025.03.14) |
| Mar 17, 2025 | 4.25% (0.04253) | 88.05th | v4 (v2025.03.14) |
| Dec 17, 2024 | 8.57% (0.08568) | 94.46th | v3 (v2023.03.01) |
| Nov 20, 2024 | 15.85% (0.15845) | 96.11th | v3 (v2023.03.01) |
| Aug 13, 2024 | 22.61% (0.22606) | 96.59th | v3 (v2023.03.01) |
| Apr 9, 2024 | 28.87% (0.28870) | 96.78th | v3 (v2023.03.01) |
| Feb 22, 2024 | 25.45% (0.25453) | 96.55th | v3 (v2023.03.01) |
| Jan 22, 2024 | 24.86% (0.24861) | 96.23th | v3 (v2023.03.01) |
| Nov 8, 2023 | 28.87% (0.28870) | 96.39th | v3 (v2023.03.01) |
| Mar 7, 2023 | 31.86% (0.31858) | 96.27th | v3 (v2023.03.01) |
| Mar 6, 2023 | 1.21% (0.01213) | 66.61th | v2 (v2022.01.01) |
| Feb 17, 2023 | 1.21% (0.01213) | 66.22th | v2 (v2022.01.01) |
| Apr 1, 2022 | 1.21% (0.01213) | 64.21th | v2 (v2022.01.01) |
| Feb 4, 2022 | 1.21% (0.01213) | 40.54th | v2 (v2022.01.01) |
References (9)
- http://lists.opensuse.org/opensuse-security-announce/2020-01/msg00040.html vendor-advisoryx_refsource_SUSEMailing ListThird Party Advisory
- https://access.redhat.com/security/cve/CVE-2016-1000110 Vendor Advisory
- https://bugzilla.redhat.com/show_bug.cgi?id=1357334 Issue Tracking
- https://bugzilla.redhat.com/show_bug.cgi?id=CVE-2016-1000110 x_refsource_MISCIssue TrackingThird Party Advisory
- https://bugzilla.suse.com/show_bug.cgi?id=CVE-2016-1000110 x_refsource_MISCIssue TrackingThird Party Advisory
- https://lists.fedoraproject.org/archives/list/package-announce%40lists.fedoraproject.org/message/7K3WFJO3SJQCODKRKU6EQV3ZGHH53YPU/ x_refsource_MISC
- https://nvd.nist.gov/vuln/detail/CVE-2016-1000110
- https://security-tracker.debian.org/tracker/CVE-2016-1000110 x_refsource_MISCThird Party Advisory
- https://www.cve.org/CVERecord?id=CVE-2016-1000110
| Link | Providers | Tags |
|---|---|---|
| http://lists.opensuse.org/opensuse-security-announce/2020-01/msg00040.html | vendor-advisoryx_refsource_SUSEMailing ListThird Party Advisory | |
| https://access.redhat.com/security/cve/CVE-2016-1000110 | Vendor Advisory | |
| https://bugzilla.redhat.com/show_bug.cgi?id=1357334 | Issue Tracking | |
| https://bugzilla.redhat.com/show_bug.cgi?id=CVE-2016-1000110 | x_refsource_MISCIssue TrackingThird Party Advisory | |
| https://bugzilla.suse.com/show_bug.cgi?id=CVE-2016-1000110 | x_refsource_MISCIssue TrackingThird Party Advisory | |
| https://lists.fedoraproject.org/archives/list/package-announce%40lists.fedoraproject.org/message/7K3WFJO3SJQCODKRKU6EQV3ZGHH53YPU/ | x_refsource_MISC | |
| https://nvd.nist.gov/vuln/detail/CVE-2016-1000110 | ||
| https://security-tracker.debian.org/tracker/CVE-2016-1000110 | x_refsource_MISCThird Party Advisory | |
| https://www.cve.org/CVERecord?id=CVE-2016-1000110 |
Change history (0)
No recorded changes yet.