CVE•Published 2026-08-18•Modified 2026-09-03•1 article on news•4 live references•NVD data
CVE-2026-71573Joomla · Joomla\!
Vulnerability data via NVD (ingested)
CVSS v3.1
8.3
HIGH
CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:C/C:L/I:L/A:L
EPSS percentile
26
Exploit Prediction Scoring System · top 74% of all CVEs
Description
Joomla! Core - [20260802] - Improper CORS origin validation in Joomla 4.0.0-5.4.7, 6.0.0-6.1.2 - An improper implementation prevented configured CORS origins from being properly validated in CORS requests.
Timeline
Published 2026-08-18
Modified 2026-09-03
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-2026-71573Hosts Shodan has explicitly fingerprinted as vulnerable.
Shodan · product
product:"Joomla Joomla\!"All exposed Joomla Joomla\! instances — cross-reference with the CVE's affected-version range.
Shodan · banner/body mention
http.html:"Joomla\!"HTTP body or banner mentions "Joomla\!" — catches deploys Shodan didn't identify as a product.
More intel sources (5)
Shodan report
vuln:CVE-2026-71573Country / ASN / product breakdown for the vuln query.
Censys
vulnerabilities.cve_id: CVE-2026-71573Censys host search filtered to this CVE id.
grep.app
CVE-2026-71573Public source-code mentions — fast PoC discovery.
GitHub code
CVE-2026-71573GitHub code search for direct mentions.
Google dork
"CVE-2026-71573" exploit -site:nvd.nist.govWrite-ups and news, NVD excluded.
Known PoCs on GitHub
No public proof-of-concept repositories found for CVE-2026-71573 on GitHub.