CVE-2026-79772
MEDIUM
NVD
CVSS Score
5.3
Severity
MEDIUM
Published
Aug 25, 2026
Vendor
unknown
Description
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.