CVE-2016-10127 json
PySAML2 XML external entity attack
published 2017-03-03 9 y ago modified 2026-06-17 4 mo ago also GHSA-m269-wj6g-c459 , PYSEC-2017-67 , EUVD-2017-0106
- cvss
- 9.0
- version 3.0, NVD
- cisa kev
- Not listed
- not in CISA's catalog
- epss
- 2.6%
- EPSS 2.6% chance of exploitation in 30 days, percentile 85%
- public exploits
- 0
- none known
Summary
PySAML2 allows remote attackers to conduct XML external entity (XXE) attacks via a crafted SAML XML request or response.
Patch / fix
- pypi pysaml2 4.5.0
- novnc OpenStack Cloud Crowbar 8, OpenStack Cloud 8, HPE Helion OpenStack 8 1.0.0-3.6.3
- grafana OpenStack Cloud Crowbar 8, OpenStack Cloud 8, HPE Helion OpenStack 8 4.6.5-4.6.3
- mariadb OpenStack Cloud Crowbar 8, OpenStack Cloud 8, HPE Helion OpenStack 8 10.2.25-4.14.2
- galera-3 OpenStack Cloud Crowbar 8, OpenStack Cloud 8, HPE Helion OpenStack 8 25.3.25-4.6.3
- crowbar-ha OpenStack Cloud Crowbar 8 5.0+git.1567673535.607aada-3.26.2
- crowbar-ui OpenStack Cloud Crowbar 8 1.2.0+git.1568396400.0344a727-3.12.3
- python-ovs OpenStack Cloud Crowbar 8, OpenStack Cloud 8 2.7.2-3.6.1
- ardana-nova OpenStack Cloud 8, HPE Helion OpenStack 8 8.0+git.1566902754.c58ff69-3.35.3
suse advisories SUSE-SU-2019:2867-1SUSE-SU-2019:2671-1SUSE-SU-2017:0569-1
- github.com/rohe/pysaml2@6e09a25 commit
- github.com/rohe/pysaml2/issues/366 patch
- github.com/rohe/pysaml2#379 pull request
Vendor advisories
What the vendors themselves say about their products: affected, fixed or not affected, and what to do.
red hat product security vex CVE-2016-10127 updated cvss 7.3
python-pysaml2: Vulnerable to XML external entity attack
-
Red Hat Enterprise Linux OpenStack Platform 7 (Kilo) python-pysaml2 Red Hat OpenStack Platform 8 (Liberty) python-pysaml2 Red Hat OpenStack Platform 9 (Mitaka) python-pysaml2 Red Hat OpenStack Platform 10 (Newton) python-pysaml2 Red Hat OpenStack Platform 11 (Ocata) python-pysaml2not affected: vulnerable code not present
Red Hat CSAF VEX © Red Hat, Inc., from https://security.access.redhat.com/data/csaf/v2/vex/; changed: reduced to product statuses and remediations. CC BY 4.0 · csaf
Exploit prediction
2.62% chance of exploitation in the next 30 days, higher than 85% of all scored CVEs (FIRST EPSS, 2026-11-09).
CVSS scores
| assigned by | version | score | vector |
|---|---|---|---|
| NVD | 3.0 | 9.0 | CVSS:3.0/AV:N/AC:L/PR:L/UI:R/S:C/C:H/I:H/A:H |
| NVD | 2.0 | 6.8 | AV:N/AC:M/Au:N/C:P/I:P/A:P |
| GitHub | 3.0 | 9.0 | CVSS:3.0/AV:N/AC:L/PR:L/UI:R/S:C/C:H/I:H/A:H |
Affected packages
| ecosystem | package | affected | fixed in |
|---|---|---|---|
| pypi | pysaml2 | <4.5.0 |
4.5.0 |
Classification
- Weakness
-
- CWE-611 Improper Restriction of XML External Entity Reference
References
-
github.com
/rohe/pysaml2/pull/379
web, issue-tracking, patch
-
github.com
/rohe/pysaml2/commit/6e09a25d9b4b7aa7a506853210a9a14100b8bc9b
web, patch
-
github.com
/rohe/pysaml2/issues/366
web, issue-tracking, patch, report
-
openwall.com
/lists/oss-security/2017/01/19/5
mailing-list, web, third-party-advisory
-
securityfocus.com
/bid/95376
vdb-entry, web
-
bugs.debian.org
/cgi-bin/bugreport.cgi?bug=850716
web, mailing-list, third-party-advisory
-
nvd.nist.gov
/vuln/detail/CVE-2016-10127
advisory
-
github.com
/advisories/GHSA-m269-wj6g-c459
advisory
-
github.com
/pypa/advisory-database/tree/main/vulns/pysaml2/PYSEC-2017-67.yaml
web
-
github.com
/rohe/pysaml2
package
-
web.archive.org
/web/20200227195127/http://www.securityfocus.com/bid/95376
web
Sources
- CVE List CVE-2016-10127
- GitHub Advisory GHSA-m269-wj6g-c459
- NVD CVE-2016-10127
- OSV PYSEC-2017-67
Fencer Intel keeps one entry per vulnerability: the CVE id wins, then GHSA, and records that alias each other are merged, except that two CVEs always keep separate entries. The same data is available as JSON.