CVE-2015-20108 ruby-saml vulnerable to XPath injection
Attackers can execute arbitrary code via XPath injection in the ruby-saml gem due to lack of prepared statements.
- Exploited in the wild
- Not known
- Login needed
- Not needed
- Attackable
- Over the internet
- Victim action needed
- Not needed
- Fix
- Available
What is CVE-2015-20108?
CVE-2015-20108 is a critical code injection vulnerability in n/a, published on 27 May 2023. An attacker can exploit it over the internet without logging in, with no action from the victim.
Official 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.
Weakness: CWE-77
Which versions are affected by CVE-2015-20108?
2 open source packages ship an affected version, including ruby-saml. It affects 1 product.
| Package | Affected | Fixed in |
|---|---|---|
ruby-saml RubyGems | All versions | 1.0.0 |
ruby-saml RubyGems | All versions | 1.0.0 |
Products include Onelogin Ruby-Saml.
How do I fix CVE-2015-20108?
Upgrade ruby-saml to 1.0.0 or later.
Upgrade, and never evaluate templates, expressions or code built from user input. More about Code injection.
Is CVE-2015-20108 being exploited?
There is no known exploitation of CVE-2015-20108 in the wild and no public exploit code.
Other vulnerabilities in n/a
- CVE-2025-66567 ruby-saml has a SAML authentication bypass due to namespace handling (parser differential)
- CVE-2025-66568 ruby-saml Libxml2 Canonicalization errors can bypass Digest/Signature validation
- CVE-2017-11428 Multiple SAML libraries may allow authentication bypass via incorrect XML canonicalization and DOM traversal
- CVE-2016-5697 Ruby-saml allows attackers to perform XML signature wrapping attacks
Sources
Also known as DEBIAN-CVE-2015-20108, GHSA-r364-2pj4-pf7f.