CVE-2026-79772

mediumCVSS 5.3covered by 1 sourcefirst seen 2026-08-25

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.

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Advisory coverage (1)

mediumCVE-2026-79772: Nokogiri versions before 1.19.1 fail to check the return value from xmlC14NExecute in the cano…nvd · 2026-08-25

External references

NVD record for CVE-2026-79772

CVE.org record

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