CVE•Published 2026-08-25•Modified 2026-09-01•0 articles on news•4 live references•NVD data
CVE-2026-79772Nokogiri · Nokogiri
Vulnerability data via NVD (ingested)
CVSS v3.1
5.3
MEDIUM
CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:L/A:N
EPSS percentile
18
Exploit Prediction Scoring System · top 82% of all CVEs
Weaknesses (CWE)
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.
Timeline
Published 2026-08-25
Modified 2026-09-01
External references
Search for exposed instances
Shodan + Censys queries derived from NVD's CPE data. The vuln tag catches assets Shodan has explicitly linked to this CVE; the product / banner fingerprints find exposed instances even when the vuln tag was never applied (which is common).
Shodan · vuln tag0 hosts
vuln:CVE-2026-79772Hosts Shodan has explicitly fingerprinted as vulnerable.
Shodan · product
product:"Nokogiri Nokogiri"All exposed Nokogiri Nokogiri instances — cross-reference with the CVE's affected-version range.
Shodan · banner/body mention
http.html:"Nokogiri"HTTP body or banner mentions "Nokogiri" — catches deploys Shodan didn't identify as a product.
More intel sources (5)
Shodan report
vuln:CVE-2026-79772Country / ASN / product breakdown for the vuln query.
Censys
vulnerabilities.cve_id: CVE-2026-79772Censys host search filtered to this CVE id.
grep.app
CVE-2026-79772Public source-code mentions — fast PoC discovery.
GitHub code
CVE-2026-79772GitHub code search for direct mentions.
Google dork
"CVE-2026-79772" exploit -site:nvd.nist.govWrite-ups and news, NVD excluded.
Known PoCs on GitHub
No public proof-of-concept repositories found for CVE-2026-79772 on GitHub.
We haven't classified any articles referencing CVE-2026-79772 yet. The external references above still apply.