CVE-2026-79772
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.
- Affected products
- Nokogiri
- CVSS 4.0
- 6.9 MEDIUM
- CVSS 3.1
- 5.3 MEDIUM
- EPSS
- 0.3% (18th percentile)
- Weakness
- CWE-252
- NVD status
- Awaiting Analysis
- Published
- 2026-08-25
CVE-2026-79772 at NVD
No indexed exploits for CVE-2026-79772 yet
Our index is partial: it proves presence, never absence
No exploit for CVE-2026-79772 has been indexed yet. Our index is built from live traffic and upstream syncs, so this page can only say what it knows — not that no exploit exists.