# CVE-2026-71454 — CWE-79 - Cross-site Scripting CAPEC-63

> As of 2026-10-02, CVE-2026-71454 is a Medium-severity (band derived from the CVSS v4.0 score, not stated by the CNA) vulnerability in CWE-79 - Cross-site Scripting CAPEC-63, CVSS v4.0 5.8, EPSS 0.2% (12.5th percentile). No Threadlinqs-tracked threat campaign has been attributed to CVE-2026-71454 as of 2026-10-02; the identifier is re-checked against the Threadlinqs threat corpus on every daily ingest.

**Last updated:** 2026-10-02

## What is CVE-2026-71454?

Improper neutralization of input during web page generation ('cross-site scripting') vulnerability in CWE-79 - Cross-site Scripting CAPEC-63 allows Cross-Site Scripting (XSS). This issue affects CAPEC-63: before 3.0b63.

The record classifies CVE-2026-71454 under weakness class [CWE-79](https://intel.threadlinqs.com/cwe/CWE-79). 1 affected-product entry is recorded, across 1 vendor, listed below. The identifier was first published 4 days ago.

## Severity and exploitation probability

- **CVSS v4.0 base score:** 5.8 — Medium (derived from score) (`CVSS:4.0/AV:N/AC:L/AT:N/PR:L/UI:N/VC:L/VI:L/VA:L/SC:H/SI:H/SA:H/E:P`)
- **EPSS (FIRST):** 0.2% probability of exploitation in the next 30 days, higher than 12.5% of all scored CVEs
- **CISA KEV:** Not listed in the CISA Known Exploited Vulnerabilities catalog
- **Threadlinqs priority:** 3.4/10 — a Threadlinqs composite of the CVSS base score, the EPSS percentile and public exploit availability
- **Published:** 2026-10-01, last modified 2026-10-02

## Is CVE-2026-71454 being exploited?

It currently carries a trending score of 32 in the Threadlinqs vulnerability feed.

## Affected products and versions

- **CWE-79 - Cross-site Scripting**: CAPEC-63

## How to fix CVE-2026-71454

No vendor patch reference has been recorded for CVE-2026-71454 in the tracked sources. Follow the references below for a fix, and treat the products listed above as exposed until the vendor states otherwise.

## Threat activity tracking CVE-2026-71454

No threat campaign in the Threadlinqs corpus currently references CVE-2026-71454, in its CVE list or as an indicator. The linkage is recomputed from the live corpus on every daily ingest, so this section fills in as soon as a tracked campaign cites the identifier.

## Sources

Enriched from CVE.org, NVD, FIRST EPSS. Last verified by Threadlinqs on 2026-10-04. This product uses the NVD API but is not endorsed or certified by the NVD.

**Other references**

- [johnsoncontrols.com](https://www.johnsoncontrols.com/trust-center/cybersecurity/security-advisories)

Canonical: https://intel.threadlinqs.com/cve/CVE-2026-71454
Full detection coverage and IOCs for threats exploiting CVE-2026-71454 via the Threadlinqs MCP server (Purple tier): https://intel.threadlinqs.com/mcp