CVE-2016-10127: pysaml2_project pysaml2
Vulnerability summary
CVE-2016-10127 is a critical (CVSS 9.0) vulnerability in pysaml2_project pysaml2. EPSS estimates a 2.62% chance of exploitation in the next 30 days, higher than 85.4% of scored vulnerabilities.
Severe, CVSS 9 (NVD); no exploitation reported by the 5 checked sources; EPSS 3% (FIRST, 03-11-2026)
Source freshness unavailable
How is this decided?Advisory lineage
Upstream 0 · Downstream 3 · Related 3Timeline
- 03-03-2017PublishedVulnerability first disclosed.
- 06-08-2024Last modifiedVulnerability information updated.
Description
PySAML2 allows remote attackers to conduct XML external entity (XXE) attacks via a crafted SAML XML request or response.
CVSS metrics
5 scores · 3 sources · 3 versions- OSV · PypiEcosystem advisory · calculated9.0CriticalCVSS:3.0/AV:N/AC:L/PR:L/UI:R/S:C/C:H/I:H/A:H
- OSV · DebianEcosystem advisory · calculated9.0CriticalCVSS:3.0/AV:N/AC:L/PR:L/UI:R/S:C/C:H/I:H/A:H
EPSS trend
Probability
2.62%
Chance of exploitation in the next 30 days
Percentile
85%
Versus all other CVEs
30-day change
No change 0.00 pp
From 2.62% on 04-10-2026
Known exploited
Compare KEV catalogs
CISA KEVNot in the CISA KEV catalog.
ENISA CNWNot in the ENISA CNW catalog.
CIRCLNot in the CIRCL catalog.
Public exploits
0 foundNo public exploits indexed.
Weaknesses
CWE · root causeAffected systems
Known conditions: network-reachable, low-privilege account, user interaction (CVSS vector). Other conditions: not stated in public data.
Debian1 product
- python-pysaml2All versions (No fix recorded)
PyPI1 product
- pysaml2< 6e09a25d9b4b7aa7a506853210a9a14100b8bc9b | < 4.5.0
Pysaml2_project1 product
- pysaml2na
3 vendors · 3 products
References
12 links- www.openwall.com/lists/oss-security/2017/01/19/5Mailing ListX Refsource MLISTThird Party AdvisoryWEB
- github.com/rohe/pysaml2PACKAGE