python-requests: session fixation and cookie stealing vulnerability
Published Mar 18, 2015
6.8
MEDIUMCVSS 2.0
EPSS 3.42%
Description
The resolve_redirects function in sessions.py in requests 2.1.0 through 2.5.3 allows remote attackers to conduct session fixation attacks via a cookie without a host value in a redirect.
Affected products
No data.
Configuration 1
- 4.0
Configuration 2
- 2.1.0
- 2.2.1
- 2.3.0
- 2.4.0
- 2.4.1
- 2.4.2
- 2.4.3
- 2.5.0
- 2.5.1
- 2.5.2
- 2.5.3
Configuration 3
- 14.04
- 14.10
No data.
Red Hat Ceph Storage 1.2
python-requests
Not affected
Red Hat Ceph Storage 1.3
python-requests
Not affected
Red Hat Enterprise Linux 7
python-requests
Not affected
Red Hat Enterprise Linux OpenStack Platform 5 (Icehouse)
python-requests
Not affected
Red Hat Enterprise Linux OpenStack Platform 6 (Juno)
python-requests
Fix deferred
Red Hat Enterprise Linux OpenStack Platform 6 (Juno) Installer
python-requests
Fix deferred
Red Hat OpenStack Platform 4
python-requests
Not affected
Red Hat Satellite 6
python-requests
Will not fix
Red Hat Storage 2
python-requests
Not affected
Red Hat Storage 3
python-requests
Not affected
| Product | Package | State | Advisory |
|---|---|---|---|
| Red Hat Ceph Storage 1.2 | python-requests | Not affected | n/a |
| Red Hat Ceph Storage 1.3 | python-requests | Not affected | n/a |
| Red Hat Enterprise Linux 7 | python-requests | Not affected | n/a |
| Red Hat Enterprise Linux OpenStack Platform 5 (Icehouse) | python-requests | Not affected | n/a |
| Red Hat Enterprise Linux OpenStack Platform 6 (Juno) | python-requests | Fix deferred | n/a |
| Red Hat Enterprise Linux OpenStack Platform 6 (Juno) Installer | python-requests | Fix deferred | n/a |
| Red Hat OpenStack Platform 4 | python-requests | Not affected | n/a |
| Red Hat Satellite 6 | python-requests | Will not fix | n/a |
| Red Hat Storage 2 | python-requests | Not affected | n/a |
| Red Hat Storage 3 | python-requests | Not affected | n/a |
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.
AV:N/AC:M/Au:N/C:P/I:P/A:P
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 1, 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 (16 key points)
Flat stretches are collapsed; showing up to 120 newest points.
| Date | Score | Percentile | Model |
|---|---|---|---|
| Oct 1, 2026 | 3.42% (0.03424) | 88.52th | v5 (v2026.06.15) |
| Jun 15, 2026 | 3.43% (0.03432) | 87.37th | v5 (v2026.06.15) |
| Nov 30, 2025 | 2.06% (0.02064) | 83.36th | v4 (v2025.03.14) |
| Jul 23, 2025 | 0.82% (0.00816) | 73.31th | v4 (v2025.03.14) |
| Jul 7, 2025 | 1.92% (0.01915) | 82.48th | v4 (v2025.03.14) |
| May 2, 2025 | 0.82% (0.00816) | 73.17th | v4 (v2025.03.14) |
| Mar 30, 2025 | 1.92% (0.01915) | 81.68th | v4 (v2025.03.14) |
| Mar 29, 2025 | 4.89% (0.04887) | 82.23th | v4 (v2025.03.14) |
| Mar 17, 2025 | 1.92% (0.01915) | 82.10th | v4 (v2025.03.14) |
| Dec 12, 2024 | 1.58% (0.01582) | 87.83th | v3 (v2023.03.01) |
| May 20, 2024 | 1.61% (0.01612) | 87.44th | v3 (v2023.03.01) |
| Mar 7, 2023 | 1.61% (0.01612) | 85.44th | v3 (v2023.03.01) |
| Mar 6, 2023 | 1.41% (0.01408) | 72.89th | v2 (v2022.01.01) |
| Mar 2, 2023 | 1.41% (0.01408) | 72.88th | v2 (v2022.01.01) |
| Apr 1, 2022 | 1.41% (0.01408) | 70.87th | v2 (v2022.01.01) |
| Feb 4, 2022 | 1.41% (0.01408) | 49.94th | v2 (v2022.01.01) |
References (15)
- http://advisories.mageia.org/MGASA-2015-0120.html x_refsource_CONFIRM
- http://lists.fedoraproject.org/pipermail/package-announce/2015-March/153594.html vendor-advisoryx_refsource_FEDORA
- http://www.mandriva.com/security/advisories?name=MDVSA-2015:133 vendor-advisoryx_refsource_MANDRIVA
- http://www.openwall.com/lists/oss-security/2015/03/14/4 mailing-listx_refsource_MLIST
- http://www.openwall.com/lists/oss-security/2015/03/15/1 mailing-listx_refsource_MLIST
- http://www.ubuntu.com/usn/USN-2531-1 vendor-advisoryx_refsource_UBUNTU
- https://access.redhat.com/security/cve/CVE-2015-2296 Vendor Advisory
- https://bugzilla.redhat.com/show_bug.cgi?id=1202904 Issue Tracking
- https://github.com/advisories/GHSA-pg2w-x9wp-vw92 Advisory
- https://github.com/kennethreitz/requests/commit/3bd8afbff29e50b38f889b2f688785a669b9aafc x_refsource_CONFIRM
- https://github.com/psf/requests/commit/3bd8afbff29e50b38f889b2f688785a669b9aafc
- https://github.com/pypa/advisory-database/tree/main/vulns/requests/PYSEC-2015-17.yaml
- https://nvd.nist.gov/vuln/detail/CVE-2015-2296
- https://warehouse.python.org/project/requests/2.6.0 x_refsource_CONFIRMVendor Advisory
- https://www.cve.org/CVERecord?id=CVE-2015-2296
Change history (0)
No recorded changes yet.