CVE-2015-20108
ruby-saml vulnerable to XPath injection
CVE-2015-20108 is a critical vulnerability (CVSS 9.8) in Onelogin Ruby-saml, published May 27, 2023. No source lists public exploit code. EPSS puts the chance of exploitation in the next 30 days at 1.33%, the 71st percentile. Fixed in ruby-saml 1.0.0.
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.
Attack profile
How easy it is to exploit
- Attack vector
- Network
- Complexity
- Low
- Privileges needed
- None
- User interaction
- None
What an attacker can affect
- Confidentiality
- High
- Integrity
- High
- Availability
- High
Exploit likelihood
What each source reports
NVD Score used
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.
- Record
CVE-2015-20108- CVSS 3.1
- 9.8 Critical
CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H - Weakness
- CWE-77
- Updated
- 2026-11-02
CVE List
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.
- Record
CVE-2015-20108- CVSS 3.1
- 9.8 Critical
CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H - Weakness
- CWE-77
- Updated
- 2026-11-02
EUVDEUVD-2023-1617
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.
- Record
EUVD-2023-1617- CVSS 3.1
- 9.8 Critical
CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H - Updated
- 2026-11-03
GitHub AdvisoriesGHSA-r364-2pj4-pf7f
ruby-saml vulnerable to XPath injection
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.
- Record
GHSA-r364-2pj4-pf7f- CVSS 3.1
- 9.8 Critical
CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H - Weakness
- CWE-77
- Updated
- 2026-11-02
OSV
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.
- Record
CVE-2015-20108- CVSS 3.1
- 9.8 Critical
CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H - Updated
- 2026-11-02
OSVDEBIAN-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.
- Record
DEBIAN-CVE-2015-20108- CVSS 3.1
- 9.8 Critical
CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H - Updated
- 2026-11-02
OSVGHSA-r364-2pj4-pf7f
ruby-saml vulnerable to XPath injection
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.
- Record
GHSA-r364-2pj4-pf7f- CVSS 3.1
- 9.8 Critical
CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H - Weakness
- CWE-77
- Updated
- 2026-11-02
OSVUBUNTU-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.
- Record
UBUNTU-CVE-2015-20108- CVSS 3.1
- 9.8 Critical
CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H - Updated
- 2026-11-02
Affected products
Affected packages
| Package | Affected | Fixed |
|---|---|---|
ruby-samlRubyGems |
before 1.0.0 | 1.0.0 |
ruby-samlDebian:12 |
before 1.0.0-1 | 1.0.0-1 |
ruby-samlRubyGems |
before 1.0.0, plus listed versions 0.0.50.0.60.0.70.0.80.2.1 Show 45 moreShow less0.2.20.2.30.3.00.3.10.3.20.3.30.3.40.4.00.4.10.4.20.4.30.4.40.4.50.4.60.4.70.5.00.5.10.5.20.5.30.6.00.7.00.7.10.7.20.7.30.8.00.8.10.8.100.8.110.8.120.8.130.8.140.8.150.8.160.8.170.8.180.8.20.8.30.8.40.8.50.8.60.8.70.8.80.8.90.90.9.1 |
1.0.0 |
History
| When | Changed | Sources |
|---|---|---|
| 2026-11-03 | affected | |
| 2026-11-03 | aliases | EUVD |
| 2026-11-02 | created | CVE List, GitHub Advisories, NVD, OSV |
References
github.com/SAML-Toolkits/ruby-saml/pull/225
security.netapp.com/advisory/ntap-20230703-0003
nvd.nist.gov/vuln/detail/CVE-2015-20108
Show 7 moreShow less
security.snyk.io/vuln/SNYK-RUBY-RUBYSAML-20217
security-tracker.debian.org/tracker/CVE-2015-20108
ubuntu.com/security/CVE-2015-20108
cve.org/CVERecord?id=CVE-2015-20108
Left out here: 3 versions. The JSON record has them.