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VULNERABILITIES

CVE-2026-79772 Details

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.

Metrics

CVSS 3.x Severity and Vector Strings:

CNA: [email protected]CVSS-B:5.3 MEDIUMVector:CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:L/A:N

References to Advisories, Solutions, and Tools

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URLSource(s)Tag(s)
https://github.com/sparklemotion/nokogiri/security/advisories/GHSA-wx95-c6cv-8532 [email protected]Vendor Advisory
https://www.vulncheck.com/advisories/nokogiri-before-unchecked-return-value-canonicalize [email protected]Third Party Advisory

Weakness Enumeration

CWE-IDCWE NameSource
CWE-252Unchecked Return Value[email protected]

Affected Products

ProductVersions
nokogiri nokogiri
>= 1.5.1, < 1.19.1

CPE

  • cpe:2.3:a:nokogiri:nokogiri:*:*:*:*:*:ruby:*:*

Remediation

  • No remediation found in references.

Change History

4 change records found show changes

QUICK INFO

CVE Dictionary Entry:
CVE-2026-79772
NVD Published Date:
Aug 25, 2026
NVD Last Modified:
Sep 1, 2026
Source:
[email protected]
CVE-2026-79772 Details - Not Deferred