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What are the severity rating and CVSS score of CVE-2026-79772?

The vulnerability CVE-2026-79772 has a severity score of 5.3 out of 10.0, which is classified as MEDIUM severity.

Which products and vendors are affected by CVE-2026-79772?

This vulnerability affects nokogiri from sparklemotion.

How can I mitigate or patch CVE-2026-79772?

Consult the vendor's security advisory for details and patches.

CVE-2026-79772: CVE-2026-79772 Vulnerability (MEDIUM Severity, CVSS: 5.3)

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.

Executive Summary

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Technical Details

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Mitigations

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References

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Duis aute irure dolor in reprehenderit in voluptate velit esse cillum dolore eu fugiat nulla pariatur. Excepteur sint occaecat cupidatat non proident, sunt in culpa qui officia deserunt mollit anim id est laborum.

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Additional Metadata

{
  "score": "5.3",
  "pubDate": "2026-08-25T16:17:28.743Z",
  "pubdate": "2026-08-25T16:17:28.743Z"
}

Sceawere

CVE-2026-79772 Verified Sceawere Triage Sources: NVD / CISA KEV

Vulnerability Metadata

Narrative and Response

Description

Executive Summary

Technical Details

Mitigations

References

Additional Metadata