CVE•Published 2026-03-21•Modified 2026-04-29•0 articles on news•6 live references•NVD data

CVE-2026-4509

Vulnerability data via NVD (ingested)

CVSS v3.1

6.3

MEDIUM

CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:U/C:L/I:L/A:L

EPSS percentile

Exploit Prediction Scoring System · top 81% of all CVEs

Weaknesses (CWE)

CWE-183Permissive List of Allowed Inputs CWE-184Incomplete List of Disallowed Inputs

Description

A security flaw has been discovered in PbootCMS up to 3.2.12. This affects an unknown function of the file core/function/file.php of the component File Upload. The manipulation of the argument black results in incomplete blacklist. The attack may be launched remotely. The exploit has been released to the public and may be used for attacks.

Timeline

Published 2026-03-21

Modified 2026-04-29

External references

NVD MITRE Exploit-DB GitHub PoC Sploitus 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-2026-4509

Hosts Shodan has explicitly fingerprinted as vulnerable.

More intel sources (5)

Shodan report

vuln:CVE-2026-4509

Country / ASN / product breakdown for the vuln query.

Censys

vulnerabilities.cve_id: CVE-2026-4509

Censys host search filtered to this CVE id.

grep.app

CVE-2026-4509