CVE-2026-79772Nokogiri before 1.19.1 Unchecked Return Value canonicalize
Updated under an hour ago ()
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It affects sparklemotion nokogiri and 1 other product. Add what you run to find out whether that includes you.
No exploitation reported and no EPSS estimate yet.
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Free account, 1 product
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.
- CVSS
- 5.3 MEDIUM (v3.1, CNA)CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:L/A:N
- Weakness (CWE)
- CWE-252
- Known exploited
- Not in CISA's KEV catalog
- EPSS (exploitation in the next 30 days)
- Not loaded for this CVE
- Assigned by
- VulnCheck
- NVD analysis
- Analyzed
- Record last updated
- Aug 28, 2026
- First seen by InfoSec Signals
- Oct 9, 2026
Affected products
sparklemotion nokogiri sparklemotion:nokogiri (from the name) | from 1.5.1 before 1.19.1; 1.19.1 not affected | CNA record |
nokogiri nokogiri nokogiri:nokogiri | from 1.5.1 before 1.19.1 | NVD |
References
- https://github.com/sparklemotion/nokogiri/security/advisories/GHSA-wx95-c6cv-8532vendor-advisory
- https://www.vulncheck.com/advisories/nokogiri-before-unchecked-return-value-canonicalizethird-party-advisory
The CVE record on cve.org NVD's entry
The CVE record is authoritative. Products marked “from the name” were identified from the CNA's free-text names, not a CPE, and are matched less certainly. This product uses the NVD API but is not endorsed or certified by the NVD.