CVE•Published 2026-06-22•Modified 2026-07-14•1 article on news•5 live references•NVD data
CVE-2026-6653Xmlsoft · Libxml2
Vulnerability data via NVD (ingested)
CVSS v3.1
9.8
CRITICAL
CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H
EPSS percentile
21
Exploit Prediction Scoring System · top 79% of all CVEs
Description
Use After Free in libxml2's xmlParseInternalSubset from GNOME libxml2 version 2.9.11 to 2.11.0 allows a remote attacker to cause a denial-of-service via maliciously crafted XML input with improper entity resolution handling.
Timeline
Published 2026-06-22
Modified 2026-07-14
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). Live host counts are a Premium feature.
Shodan · vuln tag
vuln:CVE-2026-6653Hosts Shodan has explicitly fingerprinted as vulnerable.
Shodan · product
product:"Xmlsoft Libxml2"All exposed Xmlsoft Libxml2 instances — cross-reference with the CVE's affected-version range.
Shodan · banner/body mention
http.html:"Libxml2"HTTP body or banner mentions "Libxml2" — catches deploys Shodan didn't identify as a product.
More intel sources (5)
Shodan report
vuln:CVE-2026-6653Country / ASN / product breakdown for the vuln query.
Censys
vulnerabilities.cve_id: CVE-2026-6653Censys host search filtered to this CVE id.
grep.app
CVE-2026-6653Public source-code mentions — fast PoC discovery.
GitHub code
CVE-2026-6653GitHub code search for direct mentions.
Google dork
"CVE-2026-6653" exploit -site:nvd.nist.govWrite-ups and news, NVD excluded.