What is CVE-2015-20108?

CVE-2015-20108 is a critical-severity vulnerability in Onelogin Ruby-Saml, classified under Command Injection. CVSS score: 9.8/10. Published 2023-05-27.

How severe is CVE-2015-20108?

Critical severity. CVSS v3 base score is 9.8 out of 10.

RCE in Onelogin Ruby-Saml

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.

Vulnerability class: Command Injection (OS Command Injection)

Published 2023-05-27 · last modified 2026-06-17.

CVSS v3 metric

CVSS v3 base score 9.8 (Critical). Vector: CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H.

EPSS exploit prediction

EPSS: 0.013 (71.1th percentile), scored 2026-10-31.

Low probability of exploitation in the next 30 days, but still tracked. 71st percentile — 71.1% of CVEs in the catalogue have a lower EPSS than this one. How to read EPSS.

EPSS over last 30 days · oldest: 0.013 · newest: 0.013 · change: 0.000

Affected products

Onelogin Ruby-Saml

Weakness classification (CWE)

CWE-77 — Command Injection

References

github.com/SAML-Toolkits/ruby-saml/pull/225 (Issue Tracking)
github.com/rubysec/ruby-advisory-db/blob/master/gems/ruby-saml/OSVDB-124991.yml (Third Party Advisory)
github.com/SAML-Toolkits/ruby-saml/compare/v0.9.2...v1.0.0 (Patch)
github.com/SAML-Toolkits/ruby-saml/commit/9853651b96b99653ea8627d757d46bfe62ab6… (Patch)
security.netapp.com/advisory/ntap-20230703-0003/

Frequently asked questions

What is CVE-2015-20108?: CVE-2015-20108 is a critical-severity vulnerability in Onelogin Ruby-Saml, classified under Command Injection. CVSS score: 9.8/10. Published 2023-05-27.
How severe is CVE-2015-20108?: Critical severity. CVSS v3 base score is 9.8 out of 10.