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CVE-2015-20108

30
FAUCET Score

CVE-2015-20108 describes an XPath injection vulnerability in the xml_security.rb component of the ruby-saml gem, affecting versions prior to 1.0.0. This critical vulnerability, rated 9.8 CVSS, allows unauthenticated remote attackers to achieve code execution due to the lack of prepared statements. While no active exploitation, public exploit code, or significant community discussion has been observed, the high severity indicates a significant risk if exploited.

Impacted Technologies

VendorProductVersion(s)CPE
< 1.0.0CPE matchmatch criteria
cpe:2.3:a:onelogin:ruby-saml:*:*:*:*:*:*:*:*

CVSS Data

CVSS version used by this source: 3.1

9.8CRITICAL

CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H

Attack Vector
NETWORK
Attack Complexity
LOW
Privileges Required
NONE
User Interaction
NONE
Scope
UNCHANGED
Confidentiality Impact
HIGH
Integrity Impact
HIGH
Availability Impact
HIGH
Exploitability Score
3.9
Impact Score
5.9
CvssVersion
3.1

Exploit Intelligence

EPSS Score
1.33%
Probability of exploitation in next 30 days
EPSS Percentile
68.2%
Percentile rank of EPSS score among Peer Group
As of 2026-07-25
Model: v2026.06.15
This CVE's current EPSS score of 0.0133 is in the 55th percentile among its peer group of 36,833 CVEs.

Social Chatter

The average CVE in this peer group has 0.0 Twitter, 0.1 Reddit, 0.3 Bluesky, 0.3 Mastodon, and 2.4 GitHub mentions.

Media Mentions

No media coverage found for this CVE.

The average CVE in this peer group has 0.3 InfoSec Media, 0.0 Vendor Blog, and 0.0 Security Researcher mentions.

Remediation

Patch Available

Vendor Patches (2)

github_advisorypatch availablevia nvd_reference
View patch
rubygemspatch availablevia ghsa
Product: ruby-samlFixed in: 1.0.0

Vendor Advisories (1)

rubygemsGHSA-r364-2pj4-pf7fcritical

ruby-saml vulnerable to XPath injection

May 27, 2023

References

github.com / rubysec/ruby-advisory-db/blob/master/gems/ruby-saml/OSVDB-124991.yml
Third Party Advisory
github.com / SAML-Toolkits/ruby-saml/commit/9853651b96b99653ea8627d757d46bfe62ab6448
Patch
github.com / SAML-Toolkits/ruby-saml/compare/v0.9.2...v1.0.0
Patch
github.com / SAML-Toolkits/ruby-saml/pull/225
Issue Tracking
security.netapp.com / advisory/ntap-20230703-0003