CVE•Published 2026-05-26•Modified 2026-07-24•1 article on news•4 live references•NVD data

CVE-2026-40383Joomla · Joomla\!

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

Exploit Prediction Scoring System · top 62% of all CVEs

Weaknesses (CWE)

CWE-22Improper Limitation of a Pathname to a Restricted Directory ('Path Traversal')

Description

An improper validation of user-supplied input leads to a local file inclusion vulnerability.

Timeline

Published 2026-05-26

Modified 2026-07-24

External references

NVD MITRE Exploit-DB VulnCheck

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-2026-40383

Hosts 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-2026-40383

Country / ASN / product breakdown for the vuln query.

Censys

vulnerabilities.cve_id: CVE-2026-40383

Censys host search filtered to this CVE id.

grep.app

CVE-2026-40383

Public source-code mentions — fast PoC discovery.

GitHub code

CVE-2026-40383

GitHub code search for direct mentions.

Google dork

"CVE-2026-40383" exploit -site:nvd.nist.gov

Write-ups and news, NVD excluded.

Known PoCs on GitHub (4)

CVE-2026-403834 repos

patrickmgarrity/Anthropic-Credited-CVEsunknown

Tracking Vulnerabilities That Appear to be Credited to the Anthropic Research Team

★ 82·updated today

TLWebdesign/Joomla-3-EOL-Security-FixesPHP

Security Fixes for Joomla 3 as an installable package.

★ 68·updated 1d ago

joomlaworks/joomla-3.xPHP

Joomla 3.x development continued to ensure code security and support modern PHP versions

★ 25·updated 2d ago

securin-public/frontier-ai-cve-trackerunknown

Tracking CVEs discovered by AI systems — Anthropic, OpenAI, Google Big Sleep, Microsoft MDASH, DepthFirst

★ 1·updated 3d ago