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TI-2016-08225 Aliases CVE-2016-10149GHSA-c2vx-49jm-h3f6

XML External Entity (XXE) vulnerability in PySAML2 4.4.0 and earlier allows remote…

Priority MEDIUM 41CWE-611Published · Updated

Key facts

Attack vector
Network
Privileges required
None
User interaction
None
Attack complexity
Low
Impact type
Information disclosure
Confidentiality · integrity · availability
High · None · None
Fix status
Partial Red Hat: 3 fixed, 1 without a fix

Attack profile from CVSS 3.0 · NVD. Fix status from CNA, GitHub and Red Hat. Impact type from CWE-611 and the CVSS impact.

Summary

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.

Why it matters now

EPSS 0.05024 92nd percentileScored 2026-11-07
Fix Partial pysaml2 (PyPI): 4.5.0Red Hat: 3 advisoriesRed Hat: 3 fixed, 1 without a fix

SSVC decision points

Not available: CISA has not published SSVC decision points for this record.

Affected products

VendorProductAffected versionsFixed inStatusSource
——all versions—No fix listedCNA
—pysaml2 (PyPI)before 4.5.04.5.0Patch availableGHSA-c2vx-49jm-h3f6
  • — Vendor— Affected all versions Fixed in — No fix listed CNA
  • pysaml2 (PyPI) Vendor— Affected before 4.5.0 Fixed in 4.5.0 Patch available GHSA-c2vx-49jm-h3f6

CPE configurations NVD · 2

CPEVersionsRoleVendor
cpe:2.3:a:pysaml2_project:pysaml2:*:*:*:*:*:*:*:*up to 4.4.0VulnerablePysaml2 Project
cpe:2.3:o:debian:debian_linux:8.0:*:*:*:*:*:*:*8.0VulnerableDebian
  • cpe:2.3:a:pysaml2_project:pysaml2:*:*:*:*:*:*:*:* Versions up to 4.4.0 Vulnerable ·Pysaml2 Project
  • cpe:2.3:o:debian:debian_linux:8.0:*:*:*:*:*:*:* Versions 8.0 Vulnerable ·Debian

Remediation

  • Fix · GHSA-c2vx-49jm-h3f6 pysaml2 (PyPI) Fixed in 4.5.0 Advisory →

Red Hat 3 advisories

  • RHSA-2017:0936 Released 2017-04-12 · Red Hat rating Moderate
    python-defusedxml and python-pysaml2 security update
    • Red Hat OpenStack Platform 8.0 (Liberty) python-defusedxml-0.5.0-1.el7ost, python-pysaml2-3.0.2-3.el7ost
  • RHSA-2017:0937 Released 2017-04-12 · Red Hat rating Moderate
    python-defusedxml and python-pysaml2 security update
    • Red Hat OpenStack Platform 9.0 python-defusedxml-0.5.0-1.el7ost, python-pysaml2-3.0.2-3.el7ost
  • RHSA-2017:0938 Released 2017-04-12 · Red Hat rating Moderate
    python-defusedxml and python-pysaml2 security update
    • Red Hat OpenStack Platform 10.0 python-defusedxml-0.5.0-1.el7ost, python-pysaml2-3.0.2-3.el7ost

Vendor assessments

Red Hat

Red Hat rating: Moderate. Red Hat's page for this CVE →

ProductStatusPlan or fix
Red Hat Enterprise Linux OpenStack Platform 7 (Kilo)AffectedNo fix planned: Will not fix
Red Hat OpenStack Platform 10.0Fixed RHSA-2017:0938
Red Hat OpenStack Platform 8.0 (Liberty)Fixed RHSA-2017:0936
Red Hat OpenStack Platform 9.0Fixed RHSA-2017:0937
Not affected: 1 product
  • Red Hat OpenStack Platform 11 (Ocata)

Timeline

  1. 2026-10-02 Threatist record created from CVE-2016-10149
  2. 2026-10-03 Alias added: GHSA-c2vx-49jm-h3f6

References

Patch 5

Advisory 6

Other 2

Sources

This product uses the NVD API but is not endorsed or certified by the NVD. Sources and licences