How severe is CVE-2015-20108?

CVE-2015-20108 has a CVSS 3.x base score of 9.8, rated critical severity. It is exploitable over network with low attack complexity, requires no privileges and no user interaction. Impact on confidentiality is high, integrity high, and availability high.

Is CVE-2015-20108 being actively exploited?

It is not currently listed in CISA's KEV catalog. Its EPSS exploit-prediction score is 1% (70th percentile), an estimate of the probability of exploitation in the next 30 days.

What products are affected by CVE-2015-20108?

CVE-2015-20108 affects Onelogin Ruby-saml. See the affected-products list for the exact vulnerable versions.

How do I fix CVE-2015-20108?

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-2015-20108 published?

CVE-2015-20108 was published on 2023-05-27 and last updated on 2026-06-17.

CVE-2015-20108

CVE-2015-20108 is a critical-severity vulnerability in Onelogin Ruby-saml with a CVSS 3.x base score of 9.8. 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-77.

Key facts

Severity: Critical (CVSS 3.x base score 9.8)
EPSS exploit prediction: 1% (70th percentile)
Actively exploited: Not listed in CISA KEV
Weakness: CWE-77
Affected product: Onelogin Ruby-saml
Published: 2023-05-27
Last modified: 2026-06-17

Description

xml_security.rb in the ruby-saml gem before 1.0.0 for Ruby allows XPath injection and code execution because prepared statements are not used.

Frequently asked questions

What is CVE-2015-20108?: xml_security.rb in the ruby-saml gem before 1.0.0 for Ruby allows XPath injection and code execution because prepared statements are not used.
How severe is CVE-2015-20108?: CVE-2015-20108 has a CVSS 3.x base score of 9.8, rated critical severity. It is exploitable over network with low attack complexity, requires no privileges and no user interaction. Impact on confidentiality is high, integrity high, and availability high.
Is CVE-2015-20108 being actively exploited?: It is not currently listed in CISA's KEV catalog. Its EPSS exploit-prediction score is 1% (70th percentile), an estimate of the probability of exploitation in the next 30 days.
What products are affected by CVE-2015-20108?: CVE-2015-20108 affects Onelogin Ruby-saml. See the affected-products list for the exact vulnerable versions.
How do I fix CVE-2015-20108?: 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-2015-20108 published?: CVE-2015-20108 was published on 2023-05-27 and last updated on 2026-06-17.

References

Affected products (1)

cpe:2.3:a:onelogin:ruby-saml:*:*:*:*:*:*:*:*

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