Pysaml2 does not sanitize XML responses
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 software
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| Platform | Package | Vulnerable versions | Fixed in |
|---|---|---|---|
| Python (PyPI) | pysaml2 | < 4.5.0 | 4.5.0 |
References
- https://github.com/rohe/pysaml2/pull/379
- https://github.com/rohe/pysaml2/issues/366
- https://github.com/rohe/pysaml2/commit/6e09a25d9b4b7aa7a506853210a9a14100b8bc9b
- https://bugs.debian.org/cgi-bin/bugreport.cgi?bug=850716
- http://www.openwall.com/lists/oss-security/2017/01/19/5
- http://www.debian.org/security/2017/dsa-3759
- http://www.securityfocus.com/bid/97692
- https://access.redhat.com/errata/RHSA-2017:0938
- https://access.redhat.com/errata/RHSA-2017:0937
- https://access.redhat.com/errata/RHSA-2017:0936
- https://github.com/advisories/GHSA-c2vx-49jm-h3f6
- https://nvd.nist.gov/vuln/detail/CVE-2016-10149
- https://github.com/pypa/advisory-database/tree/main/vulns/pysaml2/PYSEC-2017-25.yaml
- https://github.com/rohe/pysaml2
- CVSS vector
CVSS:3.0/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:N/A:N- Weakness (CWE)
CWE-611- Platform
- Python (PyPI)
- Package
pysaml2- Disclosed
- 24.03.2017
- Updated
- 11.10.2026 11:20
Sources and licenses
OSV / GitHub Advisory Database - PYSEC-2017-25 - PyPA Advisory Database; CC BY 4.0
OSV / GitHub Advisory Database - GHSA-c2vx-49jm-h3f6 - CC BY 4.0
Vulnerability history: pysaml2
All published vulnerabilities of this package (Python (PyPI)), newest first. Shows whether this is a one-off slip or a package that needs watching.
- Total entries
- 7
- First → latest
- 03.2017 01.2021
- Without a fix
- 0
- Exploited in attacks
- 0
Severity breakdown
- Critical 2
- High 2
- Medium 3
Disclosures per year
- 2017: 3
- 2018: 1
- 2019: 0
- 2020: 1
- 2021: 2
- 2022: 0
- 2023: 0
- 2024: 0
- 2025: 0
- 2026: 0
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Pysaml2 does not sanitize XML responses this entry
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