What is CVE-2026-42739?

CVE-2026-42739 is a high-severity vulnerability in Inilerm Advanced Ip Blocker, classified under Cross-site Scripting. CVSS score: 7.1/10. Published 2026-05-27.

How severe is CVE-2026-42739?

High severity. CVSS v3 base score is 7.1 out of 10.

XSS in Inilerm Advanced Ip Blocker

CVE-2026-42739

Improper Neutralization of Input During Web Page Generation ('Cross-site Scripting') vulnerability in IniLerm Advanced IP Blocker advanced-ip-blocker allows DOM-Based XSS.This issue affects Advanced IP Blocker: from n/a through <= 8.10.7.

Vulnerability class: XSS (Cross-Site Scripting)

EPSS: 0.000 (11.1th percentile) — read the EPSS interpretation.

CVSS v3 metric

CVSS v3 base score 7.1 (High). Vector: CVSS:3.1/AV:N/AC:L/PR:N/UI:R/S:C/C:L/I:L/A:L.

Affected products

Inilerm Advanced Ip Blocker — versions 0

Weakness classification (CWE)

CWE-79 — Cross-site Scripting

References

audit@patchstack.com (vdb-entry)

Frequently asked questions

What is CVE-2026-42739?: CVE-2026-42739 is a high-severity vulnerability in Inilerm Advanced Ip Blocker, classified under Cross-site Scripting. CVSS score: 7.1/10. Published 2026-05-27.
How severe is CVE-2026-42739?: High severity. CVSS v3 base score is 7.1 out of 10.