CVE•Published 2026-06-18•Modified 2026-08-11•1 article on news•5 live references•NVD data
CVE-2026-56020
Vulnerability data via NVD (ingested)
CVSS v3.1
8.1
HIGH
CVSS:3.1/AV:N/AC:H/PR:N/UI:N/S:U/C:H/I:H/A:H
EPSS percentile
40
Exploit Prediction Scoring System · top 60% of all CVEs
Weaknesses (CWE)
Description
The Webmin HTTP server (miniserv.pl) allows unauthenticated attackers to impersonate any user with a configured SSL client certificate by sending a forged HTTP header. A remote attacker can spoof certificate DNs and authenticate as any user. Fixed in 2.202.
Timeline
Published 2026-06-18
Modified 2026-08-11
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).
More intel sources (5)
Shodan report
vuln:CVE-2026-56020Country / ASN / product breakdown for the vuln query.
Censys
vulnerabilities.cve_id: CVE-2026-56020Censys host search filtered to this CVE id.
grep.app
CVE-2026-56020Public source-code mentions — fast PoC discovery.
GitHub code
CVE-2026-56020GitHub code search for direct mentions.
Google dork
"CVE-2026-56020" exploit -site:nvd.nist.govWrite-ups and news, NVD excluded.
Known PoCs on GitHub
No public proof-of-concept repositories found for CVE-2026-56020 on GitHub.