python-pysaml2: Entity expansion issue
Published Mar 24, 2017
8.7
HIGHCVSS 4.0
EPSS 5.02%
Description
XML External Entity (XXE) vulnerability in PySAML2 4.4.0 and earlier allows remote attackers to read arbitrary files via a crafted SAML XML request or response.
Affected products
No data.
Configuration 1
- ≤ 4.4.0
Configuration 2
- 8.0
No data.
Red Hat OpenStack Platform 10.0 (Newton)
python-defusedxml-0:0.5.0-1.el7ost
Fixed · RHSA-2017:0938
Red Hat OpenStack Platform 10.0 (Newton)
python-pysaml2-0:3.0.2-3.el7ost
Fixed · RHSA-2017:0938
Red Hat OpenStack Platform 8.0 (Liberty)
python-defusedxml-0:0.5.0-1.el7ost
Fixed · RHSA-2017:0936
Red Hat OpenStack Platform 8.0 (Liberty)
python-pysaml2-0:3.0.2-3.el7ost
Fixed · RHSA-2017:0936
Red Hat OpenStack Platform 9.0 (Mitaka)
python-defusedxml-0:0.5.0-1.el7ost
Fixed · RHSA-2017:0937
Red Hat OpenStack Platform 9.0 (Mitaka)
python-pysaml2-0:3.0.2-3.el7ost
Fixed · RHSA-2017:0937
Red Hat Enterprise Linux OpenStack Platform 7 (Kilo)
python-pysaml2
Will not fix
Red Hat OpenStack Platform 11 (Ocata)
python-pysaml2
Not affected
| Product | Package | State | Advisory |
|---|---|---|---|
| Red Hat OpenStack Platform 10.0 (Newton) | python-defusedxml-0:0.5.0-1.el7ost | Fixed | RHSA-2017:0938 |
| Red Hat OpenStack Platform 10.0 (Newton) | python-pysaml2-0:3.0.2-3.el7ost | Fixed | RHSA-2017:0938 |
| Red Hat OpenStack Platform 8.0 (Liberty) | python-defusedxml-0:0.5.0-1.el7ost | Fixed | RHSA-2017:0936 |
| Red Hat OpenStack Platform 8.0 (Liberty) | python-pysaml2-0:3.0.2-3.el7ost | Fixed | RHSA-2017:0936 |
| Red Hat OpenStack Platform 9.0 (Mitaka) | python-defusedxml-0:0.5.0-1.el7ost | Fixed | RHSA-2017:0937 |
| Red Hat OpenStack Platform 9.0 (Mitaka) | python-pysaml2-0:3.0.2-3.el7ost | Fixed | RHSA-2017:0937 |
| Red Hat Enterprise Linux OpenStack Platform 7 (Kilo) | python-pysaml2 | Will not fix | n/a |
| Red Hat OpenStack Platform 11 (Ocata) | python-pysaml2 | Not affected | n/a |
No package ranges for this CVE.
Remediation
No remediation recorded yet.
Metrics
CVSS:4.0/AV:N/AC:L/AT:N/PR:N/UI:N/VC:H/VI:N/VA:N/SC:N/SI:N/SA:N
No CVSS v3.1 score for this CVE.
CVSS:3.0/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:N/A:N
1 other source (Red Hat) ▾
CVSS:3.0/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:L
AV:N/AC:L/Au:N/C:P/I:N/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 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 (12 key points)
Flat stretches are collapsed; showing up to 120 newest points.
| Date | Score | Percentile | Model |
|---|---|---|---|
| Oct 1, 2026 | 5.02% (0.05024) | 91.99th | v5 (v2026.06.15) |
| Jul 24, 2026 | 5.02% (0.05024) | 91.35th | v5 (v2026.06.15) |
| Jun 15, 2026 | 3.86% (0.03860) | 88.77th | v5 (v2026.06.15) |
| Mar 30, 2025 | 1.61% (0.01611) | 80.09th | v4 (v2025.03.14) |
| Mar 29, 2025 | 3.25% (0.03253) | 78.37th | v4 (v2025.03.14) |
| Mar 17, 2025 | 1.25% (0.01247) | 77.93th | v4 (v2025.03.14) |
| Dec 12, 2024 | 0.32% (0.00317) | 71.29th | v3 (v2023.03.01) |
| Feb 8, 2024 | 0.32% (0.00317) | 69.62th | v3 (v2023.03.01) |
| Mar 7, 2023 | 0.32% (0.00317) | 65.67th | 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) |
References (16)
- http://www.debian.org/security/2017/dsa-3759 vendor-advisoryx_refsource_DEBIANThird Party Advisory
- http://www.openwall.com/lists/oss-security/2017/01/19/5 mailing-listx_refsource_MLISTMailing ListPatchThird Party Advisory
- http://www.securityfocus.com/bid/97692 vdb-entryx_refsource_BID
- https://access.redhat.com/errata/RHSA-2017:0936 vendor-advisoryx_refsource_REDHAT
- https://access.redhat.com/errata/RHSA-2017:0937 vendor-advisoryx_refsource_REDHAT
- https://access.redhat.com/errata/RHSA-2017:0938 vendor-advisoryx_refsource_REDHAT
- https://access.redhat.com/security/cve/CVE-2016-10149 Vendor Advisory
- https://bugs.debian.org/cgi-bin/bugreport.cgi?bug=850716 x_refsource_CONFIRMIssue TrackingPatchThird Party Advisory
- https://bugzilla.redhat.com/show_bug.cgi?id=1415710 Issue Tracking
- https://github.com/advisories/GHSA-c2vx-49jm-h3f6 Advisory
- https://github.com/pypa/advisory-database/tree/main/vulns/pysaml2/PYSEC-2017-25.yaml
- https://github.com/rohe/pysaml2/commit/6e09a25d9b4b7aa7a506853210a9a14100b8bc9b x_refsource_CONFIRMIssue TrackingPatchThird Party Advisory
- https://github.com/rohe/pysaml2/issues/366 x_refsource_MISCIssue TrackingPatchThird Party Advisory
- https://github.com/rohe/pysaml2/pull/379 x_refsource_CONFIRMIssue TrackingPatchThird Party Advisory
- https://nvd.nist.gov/vuln/detail/CVE-2016-10149
- https://www.cve.org/CVERecord?id=CVE-2016-10149
Change history (0)
No recorded changes yet.