How severe is CVE-2016-10127?

CVE-2016-10127 has a CVSS 3.x base score of 9.0, rated critical severity. It is exploitable over network with low attack complexity, requires low privileges and user interaction. Impact on confidentiality is high, integrity high, and availability high.

Is CVE-2016-10127 being actively exploited?

It is not currently listed in CISA's KEV catalog. Its EPSS exploit-prediction score is 2% (80th percentile), an estimate of the probability of exploitation in the next 30 days.

What products are affected by CVE-2016-10127?

CVE-2016-10127 affects Pysaml2 Project Pysaml2. See the affected-products list for the exact vulnerable versions.

How do I fix CVE-2016-10127?

Review the linked vendor and NVD advisories for patched versions and mitigations, then upgrade or apply the recommended workaround. Given its critical severity, prioritise patching exposed systems.

When was CVE-2016-10127 published?

CVE-2016-10127 was published on 2017-03-03 and last updated on 2026-06-17.

CVE-2016-10127

CVE-2016-10127 is a critical-severity vulnerability in Pysaml2 Project Pysaml2 with a CVSS 3.x base score of 9.0. It is not currently listed as actively exploited by CISA, and its EPSS exploit-prediction score is low. The underlying weakness is classified as CWE-611.

Key facts

Severity: Critical (CVSS 3.x base score 9.0)
CVSS v2: 6.8
EPSS exploit prediction: 2% (80th percentile)
Actively exploited: Not listed in CISA KEV
Weakness: CWE-611
Affected product: Pysaml2 Project Pysaml2
Published: 2017-03-03
Last modified: 2026-06-17

Description

PySAML2 allows remote attackers to conduct XML external entity (XXE) attacks via a crafted SAML XML request or response.

Frequently asked questions

What is CVE-2016-10127?: PySAML2 allows remote attackers to conduct XML external entity (XXE) attacks via a crafted SAML XML request or response.
How severe is CVE-2016-10127?: CVE-2016-10127 has a CVSS 3.x base score of 9.0, rated critical severity. It is exploitable over network with low attack complexity, requires low privileges and user interaction. Impact on confidentiality is high, integrity high, and availability high.
Is CVE-2016-10127 being actively exploited?: It is not currently listed in CISA's KEV catalog. Its EPSS exploit-prediction score is 2% (80th percentile), an estimate of the probability of exploitation in the next 30 days.
What products are affected by CVE-2016-10127?: CVE-2016-10127 affects Pysaml2 Project Pysaml2. See the affected-products list for the exact vulnerable versions.
How do I fix CVE-2016-10127?: Review the linked vendor and NVD advisories for patched versions and mitigations, then upgrade or apply the recommended workaround. Given its critical severity, prioritise patching exposed systems.
When was CVE-2016-10127 published?: CVE-2016-10127 was published on 2017-03-03 and last updated on 2026-06-17.

References

Affected products (1)

cpe:2.3:a:pysaml2_project:pysaml2:-:*:*:*:*:*:*:*

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