CVE-2026-79772
Nokogiri versions before 1.19.1 fail to check the return value from xmlC14NExecute in the canonicalize method, returning an empty string on failure instead of raising an exception. Attackers can exploit this to bypass signature validation in downstream SAML libraries by providing invalid canonicalized XML that is incorrectly accepted as valid.
Published:Aug 25, 2026
Last Modified:Sep 1, 2026
EPS:Aug 25, 2026
EPSS Score:0.00262
CVSS Score:5.3
Affected Products
Vendor
Product
Action
Vendor
Nokogiri
Product
Nokogiri
Nokogiri
Nokogiri
Vendor
Sparklemotion
Product
Nokogiri
Sparklemotion
Nokogiri
Exploits
No exploit reference
Common Weakness Enumeration
Common Attack Pattern Enumeration and Classification (CAPEC)
No CAPEC recorded yet
Related CVEs
Common Vulnerability Scoring System
Attack Vector
Network
Adjacent
Local
Physical
Privileges Required
None
Low
High
User Interaction
None
Required
Scope
Unchanged
Changed
Confidentiality
None
Low
High
Integrity
None
Low
High
Availability
None
Low
High
