VULNERABILITY INTELLIGENCE

CVE-2026-79772

CVSS score5.3 MEDIUM
EPSS probability0.34%
CISA KEVNot currently listed
Published2026-08-25
Last modified2026-09-01
CVSS vectorCVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:L/A:N

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.

Weakness classification

  • disclosure@vulncheck.com: CWE-252

Primary references